Engine Category
EM1-Plan and Schedule Operations
Q:
On board your vessel the main engine consumes hourly 1375 litres HFO, the boiler 560 litres per hour and the auxiliary diesel 166 litres per hour. At what throughput shall you feed the HFO purifier?
1) 2) 3) 4) 3700 litres/hour 3200 litres/hour 2600 litres/hour 2350 litres/hour 4 Engine Category Answer :
Q:
Suppose the crankcase oil system contains 14000 litres of oil and the capacity of the Lubrication Oil purifier is 2500 litres/hour
maximum, what throughput should be maintained?
1) 2) 3) 4)
2300 - 2400 litres per hour. 1950 - 2100 litres per hour. 1680 - 1850 litres per hour. 1350 - 1450 litres per hour.
1 Engine Category
Answer :
Q:
What is the most practical way to control the humidity of the cooled air to the accommodation as well as efficiency control in tropical climates ?
1) 2) 3) 4)
Keep the outside watertight doors closed as much as possible. Keep portholes and vents closed.
Keep both fresh air intake and recirculation open , throttle with F.A.I.
Ensure galley, laundry room, drying room doors always closed.
3 Engine Category
Answer :
Q:
You are required to order 1 years supply of refrigerant
compressor oil and you estimate that consumption will be 480 litres in that time. If there is already an open drum of 180 litres on board, what will you order ?
1) 2) 3)
One drum x 205 litres + 5 pails x 20 litres. Two drums x 205 litres.
15 pails x 20 litres. Engine Category
Q:
What kind of 5-yearly maintenance should be carried out on this type of heat exchanger ?
1) 2) 3) 4)
Pull and clean tube nest and inspection by class surveyor. Exchange all gaskets, clean and test for classification. Mechanical and chemical cleaning, test for classification. Open inspection covers and check for leaks, clean tubes.
3 Engine Category
Answer :
Q:
According to regulations, on board ships it is necessary to have PUMP REDUNDANCY. What does this mean ?
1) 2) 3) 4)
All pumps in the engine room are duplicated
All essential pumps in the engine room have a back-up possibility Two identical pumps must be fitted for each circuit.
A stand-by pump must be available for each pump separately
2 Engine Category
Answer :
Q:
What is the most important connection with the deck department for the chief engineer ?
1) 2) 3) 4)
Maintenance of all safety appliances. Maintenance of all cargo gear.
Knowledge of all sailing plans and cargo loading/discharging. The ships speed and consumption.
3 Engine Category
Answer :
Q:
What is the most aspect of communication with the deck department ?
1) 2) 3) 4)
Ballasting operations, cargo hold bilge pumping. Executing of orders from the bridge.
Executing orders from and issuing warnings to the bridge. Operation of fire fighting and life saving equipment.
3 Engine Category
Q:
Which of the following is the Chief Engineer's obligation to calculate in advance for the next voyage and may not be delegated?
1) 2) 3) 4)
Fuel requirement. Lub oil requirement.
Spares and consumable stores essential for the voyage. All of these.
4 Engine Category
Answer :
Q:
The water in a steaming auxiliary boiler should be tested daily for ... 1) 2) 3) 4) dissolved oxygen. dissolved nitrogen. chlorides. sulphites. 3 Engine Category Answer :
Q:
In the starting air layout shown what is the purpose of item 'A'?
1) 2) 3) 4)
Pilot air control valve. Automatic air venting valve. Interlock air blocking valve. Air relief valve.
3 Engine Category
Answer :
Q:
What is the function of item "PC" ?
1) 2) 3) 4)
Pressure Controller activating 3-way valve solenoid Pressure Container admitting air to air bottle
Pressure Container activating automatic pressure release valve Piston Controller activating compressor piston movement
1 Engine Category
Q:
What is item "U" and how does it act on item "S" ?
1) 2) 3) 4)
Item "U" is the uplifter of the air bottle's safety valve.
Item "U" is the upper pressure limit valve activating the solenoid. Item "U" is the unloader lifting the compressor suction valve. Item "U" is the activator for the safety release valve.
3 Engine Category
Answer :
Q:
You will notice in this drawing that steam traps are fitted so only condensate can return. Then why is there an atmospheric condenser fitted ?
1) 2) 3) 4)
Because the water is condensed under pressure and will re-evaporate.
To allow the vapour and water to be cooled under vacuum. To de-airate the water under vacuum.
To avoid steaming up if steam traps are frequently stuck or
defective. 1
Engine Category
Answer :
Q:
What will happen if the seat plate 5 is ground too much allowing valve disc 4 to open an increased amount?
1) 2) 3) 4)
The thermodynamic efficiency decreases. The compression ratio decreases. The maximum output pressure decreases. All of these.
1 Engine Category
Answer :
Q:
What are the steps to be taken, in what order, to stabilise the governor of a diesel engine after overhaul ?
1) 2) 3) 4)
Adjust speed P, then integrate, next differentiating, from 0. Set integrating to MAX. than adjust speed P and differential D. Set integrating to MAX, differentiating to MIN, adjust speed upward. Integrating and differentiating MAX, set speed from 0 upwards.
1 Engine Category
Q:
All engine crankcase explosion investigations have show only one thing in common; this is ...
1) 2) 3) 4)
the build up of oil vapour.
excessively high lubricating oil temperature. evidence of a hot spot.
a wiped crankshaft bearing.
3 Engine Category
Answer :
Q:
What is the primary cause of scavenge air space fires ?
1) 2) 3) 4)
Blow-by due to broken piston rings. Insufficient cylinder lubrication. Faulty injectors.
Excessive cylinder lubrication.
1 Engine Category
Answer :
Q:
If the performance of a centrifugal pump deteriorates over time (tons/hour x height in metres) it is usually due to ...
1) 2) 3) 4)
cavitation of the impeller.
excessive wear between impeller and wear ring. condition of the ball bearing.
condition of the pump housing.
2 Engine Category
Answer :
Q:
The amount, condition and appearance of liquid collecting in bilges over time is a sign of ...?
1) 2) 3) 4)
sloppy engine room management. flooding taking place.
specific system losses. leakage or overflow.
3 Engine Category
Q:
Which are the parameters that steer the automatic level control system of the boiler shown here ?
1) 2) 3) 4)
Water level and steam consumption. Feedvalve and feed by-pass valve. The level controller.
The level transmitter.
1 Engine Category
Answer :
Q:
Which of the significant combustible elements of fuel oil are a major source of air pollution?
1) 2) 3) 4) Sulphur, carbon. Nitrogen, oxygen. Carbon, oxygen. Hydrogen, nitrogen. 1 Engine Category Answer :
Q:
Too high alkalinity of boiler water may cause ....
1) 2) 3) 4) scale. corrosion. caustic embrittlement. alkoid precipitation. 1 Engine Category Answer :
Q:
The weakening of boiler steel as the result of inner crystalline cracking is known as .... 1) 2) 3) 4) exposure stress. caustic embrittlement. alkaline stress. corrosion. 2 Engine Category Answer :
Q:
Uneven flame distribution during combustion in the boiler furnace is known as ... 1) 2) 3) 4) flame impingement. furnace overload. burner flame failure. unequal firing.
1 Engine Category
Answer :
Q:
The best way to ensure engine speed governor stability is to allow a given ratio of ...
1) 2) 3) 4) stability. sensitivity. speed droop. compensation. 3 Engine Category Answer :
Q:
When a new cylinder liner is fitted to a 2-stroke engine, which of the following steps should be taken ? I. Increase the cylinder oil flow. II. Reduce the cylinder load. III. Reduce the oil flow.
1) 2) 3) 4) I and II I, II and III II and III I and III 1 Engine Category Answer :
Q:
If you get a heavy scavenging air fire, which of these parts is likely to suffer the most serious damage ?
1) 2) 3) 4)
The crosshead bearing. The piston.
The exhaust valve. The stuffing box.
4 Engine Category
Q:
When taking a set of crankshaft deflections the + sign is indicated, example +4. This means that ...
1) 2) 3) 4)
the crankpin location is 4/100 mm out of centre. the crankwebs have opened up by 4/100 mm. the crankwebs have closed in by 4/100 mm.
one main bearing on one side is 4/100 mm bigger than the other.
2 Engine Category
Answer :
Q:
In the operation shown what is being checked?
1) 2) 3) 4)
Axial position of the compressor impeller. Turbine wheel/nozzle clearance.
Axial location of the labrynth gland. Axial movement in the thrust bearings.
2 Engine Category
Answer :
Q:
What is the purpose of part number 2 ?
1) 2) 3) 4)
To prevent clean liquid mixing with the in-coming dirty liquid. To accelerate the liquid to the same speed as the bowl. To reduce the bowl speed to adapt to the type of liquid. To keep the liquid separated.
2 Engine Category
Answer :
Q:
The use of a steam trap has a beneficial influence on the thermal balance of the heat exchanger fitted before that trap. This is because ...
1) 2) 3) 4)
it will allow the steam to expand to atmospheric pressure. all heat is used under corresponding saturated pressure. all heat will be extracted from the steam before turning to water. it will allow the steam to expand below atmosphere to vacuum.
3 Engine Category
Q:
A ship's propeller is 4882 mm in diameter with pitch of 4226 mm. The engine RPM is 122. Assuming no slip what is the ship's speed?
1) 2) 3) 4) 19.29 knots. 18.44 knots. 16.7 knots. 15.22 knots. 3 Engine Category Answer :
Q:
A ship's main engine runs at 114 RPM. The slip that day was 7.4 %. If the ship's speed that day was 13.82 knots, what is the pitch of the propeller ? 1) 2) 3) 4) 4426 mm 4182 mm 4040 mm 3938 mm 3 Engine Category Answer :
Q:
A vessel has a propeller with 3828 mm pitch and makes 109 RPM. If the sea speed is 12.8 knots, what is the slip ?
1) 2) 3) 4) 8.3 % 3.8 % 5.3 % 3.5 % 3 Engine Category Answer :
Q:
A diesel engine cylinder diameter is 700 mm, its stroke is 1200 mm, its IMP is 8.9 bar and its revolutions 120 RPM. What is the POWER developed per cylinder ?
1) 2) 3) 4) 1095 IHP 2052 BHP 1633 shaft horsepower 2344 metric HP 1 Engine Category Answer :
Q:
How is it ensured that the flow of the scavenge air is directed symmetrically through the cylinder ?
1) 2) 3) 4)
By the uniflow system. By the reverse system. By the turbocharger. By the scavenge port shape.
4 Engine Category
Answer :
Q:
What factors influence the vacuum (vacuum %) inside the shell of a fresh water generator ?
1) 2) 3) 4)
The temperature of the fresh water heating the evaporator. The temperature of the sea water cooling the condenser. The pressure of the ejector water on the vacuum ejector. All of these.
4 Engine Category
Answer :
Q:
As we can use only the linear part of the characteristic, this shows that the flapper can only travel 0.01 mm, therefore DELTA psi obtained can only be less than 1 psi. Can we use the flapper nozzle system ?
1) 2) 3) 4)
No, the nozzle/flapper assembly needs modification. No , the flapper system will gives erratic readings. Yes, but the valves need a servo booster.
Yes, but the readings obtained between DELTA psi need to be
amplified. 4
Engine Category
Answer :
Q:
On which part of the Pneumatic Amplifier is the nozzle back pressure of the nozzle/flapper (NBP) acting ?
1) 2) 3) 4) On spring S On ball valve B On valve V On membrane M 4 Engine Category Answer :
Q:
What is the function of ball valve B in relation to the outlet pressure Pu of this pneumatic amplifier ?
1) 2) 3) 4)
To push the membrane back in place after each movement Opening port of 20 psi supply air access
To push the atmospheric vent close, increase Pu
To counteract the pressure on the membrane M , decrease Pu
2 Engine Category
Answer :
Q:
What is the function of valve V in relation to the outlet pressure Pu of this pneumatic amplifier
1) 2) 3) 4)
To allow stabilising feedback pressure on the membrane To allow venting of pressure Pu to the atmosphere To transmit the pressure Pu to the membrane To push spring S open via the ball B
2 Engine Category
Answer :
Q:
These characteristics show Pu in relation to flapper distance and NBP of a pneumatic nozzle flapper and transmitter; thus with the smallest distance movements it fluctuates sharply. What is the result and the remedy ?
1) 2) 3) 4)
Unsteady operation .Springs are to be fitted on all moving parts. Tendency to close. Fit by pass nozzle to amplifier.
Tendency to open. Fit elongated flappers in output.
Unsteady operation. Bellows are to be fitted in pneumatic lines.
4 Engine Category
Answer :
Q:
This is an actual lay-out drawing of a pneumatic amplifier block. Where is the 20 psi supply air admitted ?
1) 2) 3) 4)
At air passage item 12 At air passage item 13 At air passage item 14 At air passage item 15
2 Engine Category
Q:
Where is the output pressure Pu taken from this pneumatic amplifier shown here ?
1) 2) 3) 4) Air passage 12 Air passage 13 Air passage 14 Air passage 15 3 Engine Category Answer :
Q:
Via which air passage is the nozzle back pressure from the nozzle/flapper admitted for this pneumatic amplifier ?
1) 2) 3) 4) Air passage 12 Air passage 13 Air passage 14 Air passage 15 1 Engine Category Answer :
Q:
What is item No 3 shown of this pneumatic amplifier ?
1) 2) 3) 4)
Retaining plates for the ball valve.
Blade (feather) springs to load the ball and the vent valve. Nozzle flappers.
Ball valve securing blades.
2 Engine Category
Answer :
Q:
How can the output pressure Pu of this pneumatic amplifier be initially adjusted ? 1) 2) 3) 4) By screw item 4 By screw item 11 By screw item 1 By screw item 10 1 Engine Category Answer :
Q:
What is part No 4 shown in this drawing of a pneumatic amplifier ?
1) 2) 3) 4)
The air supply compartment. The exhaust or vent compartment. The output air compartment.
The nozzle back pressure supply compartment.
1 Engine Category
Answer :
Q:
What is the amplification factor (K) of a pneumatic amplifier ?
1) 2) 3) 4) K = 4 K = 12 K = 16 K = 20 3 Engine Category Answer :
Q:
If the length of "a" is equal to the length of "b" what will be the proportional band "PB" of this pneumatic controller ?
1) 2) 3) 4) 0 % 25 % 50 % 100 % 4 Engine Category Answer :
Q:
If Q1 is the filling volume of the tank and Q2 the outflow volume of the tank and the level L is constant by controller output pressure Pu = 9 psi, the valve V2 will be open for ...
1) 2) 3) 4) 100 % 75 % 50 % 25 % 3 Engine Category Answer :
Q:
If the input flow Q1 increases to Q1' and level L increases to L' what will initially happen ?
1) 2) 3) 4)
The amplifier will increase its air output pressurising bellow P The output pressure Pu will increase proportionally to L' The proportional band PB will change
The amplification factor K will change
1 Engine Category
Answer :
Q:
What do you call the pneumatic mode of operating of the pneumatic controlled valve V2 ?
1) 2) 3) 4) Positive activation Negative activation Air to Open Air to Close 3 Engine Category Answer :
Q:
This characteristic shows the output pressure of a controller effecting valve lift. If PB = 100 % is the graph shown in "a" . What is the graph of PB = 50 % ? 1) 2) 3) 4) Graph b Graph e Graph d Graph f 1 Engine Category Answer :
Q:
This characteristic shows output pressure of a controller
effecting valve lift. If PB = 100 % is the graph shown in "a " . What is the amplification factor and the proportional band represented by graph "f" ?
1) 2) 3) 4)
Amplification 50 %, Proportional Band 100 % Amplification 0, Proportional Band infinitive Amplification infinitive, Proportional band 0 Proportional band 50 %, amplification 100 %
2 Engine Category
Q:
Graph "d" of this characteristic showing output pressure Pu of a controller effecting valve lift, represents ZERO proportional band over INFINITIVE amplification. How does the system works ?
1) 2) 3) 4)
It does not regulate the level at all. It works with intolerable offsets. It works with maximum range offsets.
It works FULL OPEN/FULL CLOSE, unsteady, offset NIL.
4 Engine Category
Answer :
Q:
If the pressures in the MV and the SV bellows are equal, what will be the output pressure Pu of this pneumatic P-controller ?
1) 2) 3) 4) 3 psi 6 psi 9 psi 12 psi 3 Engine Category Answer :
Q:
If the measured value bellow is connected to the output of the jacket CW temperature transmitter and the Pu of the controller is 9 psi, and we reduce the temperature setting from 75 to 72 degree C what happens to the Pu ?
1) 2) 3) 4)
It will increase to 20 psi. It will decrease below 9 psi. It will increase above 9 psi. It will decrease to 0 psi.
3 Engine Category
Answer :
Q:
Suppose the variation of INPUT is 1 psi down instead of 1 psi up on this pneumatic P-Controller. If the proportional band PB is 25 % what will be the output pressure ?
1) 2) 3) 4) 3 psi 2 psi 6 psi 0 psi 1 Engine Category Answer :
Q:
Suppose the INPUT of the pneumatic controller is 4 psi and the PB is 25 %. If variation on the input is 1psi down, what is the variation on the output expressed in psi ?
1) 2) 3) 4) 4 psi 2 psi 1 psi 6 psi 3 Engine Category Answer :
Q:
What would be the variation of output on this pneumatic
controller if Proportional B and PB = infinity, by varying the input as shown here ? 1) 2) 3) 4) 1 psi
Infinity, full open, full close control system Between 3 and 15 psi
No response, nil
4 Engine Category
Answer :
Q:
Suppose the Proportional Band of this pneumatic controller is increased to 500 % and the input variation remains the same. What would be the output variation ?
1) 2) 3) 4) 1 psi 5 psi 0.2 psi 0.5 psi 3 Engine Category Answer :
Q:
This characteristic shows output pressure of a pneumatic controller controlling water level. The level is fluctuating. What is wrong with the setting of the controller.?
1) 2) 3) 4)
The span is too narrow. The range is too large.
The proportional band is too small. The amplification is too small.
3 Engine Category
Q:
Something is wrong with the controller setting of this water level control system. Suppose the Proportional Band is 12.5 %, to what value would you reset it ?
1) 2) 3) 4) 20 % 50 % 100 % 500 % 3 Engine Category Answer :
Q:
In this electrical amplifier drawing, what takes the place of the flapper/nozzle unit used by the pneumatic control unit with amplifier ? 1) 2) 3) 4) R2 R1 U1 U2 1 Engine Category Answer :
Q:
This drawing shows which kind of pneumatic controller ?
1) 2) 3) 4)
A proportional controller.
A proportional integrating controller. A proportional differentiating controller. A proportional integrating-differential controller.
2 Engine Category
Answer :
Q:
Since the output of the pressure transmitter is not linear with the flow in the pipe as measured over the measuring flange the output signal should be sent to a ....
1) 2) 3) 4) balancing valve. equaliser. root extractor. summator. 3 Engine Category Answer :
Q:
From this drawing of a pneumatic pressure transmitter, what is the Proportional Band setting ?
1) 2) 3) 4)
Proportional Band = 100 %, amplification K = 1
Proportional Band less than 100 %, amplification K more than 1 Proportional Band more than 100 %, amplification K less than 1 Proportional Band 0%, amplification infinitive
2 Engine Category
Answer :
Q:
For which type of controller are these the input (left) and the response (right) characteristics ?
1) 2) 3) 4) A pneumatic inverter A pneumatic integrator
A pressure integrating controller A proportional integrating controller
4 Engine Category
Answer :
Q:
The manometer with scale indication shown here is fitted in the ... line of a controller or valve positioner which supplies a pneumatic valve motor with " Pressure to ... function.
1) 2) 3) 4) supply, " Close " input, " Open " output, " Open " input, " Close " 3 Engine Category Answer :
Q:
What measure of power developed inside a cylinder is obtained by using the formula PMI x cylinder section surface (cm2) x stroke (metre) : 75 ? 1) 2) 3) 4) Brake horsepower. Metric Horsepower. Effective horsepower. Indicated horsepower. 4 Engine Category Answer :
Q:
A ship makes an observed speed of 17 knots. The engine speed is 17.5 knots. What is the propeller slip ?
1) 2) 3) 4) 28.5 % 285 % .0285 % 2.85 % 4 Engine Category Answer :
Q:
An engine develops 2500 IHP and the BHP is 2000. What is the mechanical efficiency? 1) 2) 3) 4) 12.5 or 1250% 1.25 or 125% 0.8 or 80% 0.08 or 8% 3 Engine Category Answer :
Q:
Thermal efficiency refers to heat engines and is the ratio of ...
1) 2) 3) 4)
input to the output on the power take off.
output on the shaft/flywheel to internally produced power. horsepower to BTU input of fuel.
Output to BTU converted in energy.
2 Engine Category
Answer :
Q:
Which of the following is a record of the pressure existing in the cylinder at various positions of the piston throughout the engine cycle ? 1) 2) 3) 4) A Timing diagram. An Indicator diagram. A Temperature diagram. a Cycle diagram. 2 Engine Category Answer :
Q:
The basic type of reversing air starting system that can be used only on two-stroke, ported, direct coupled, propulsion Diesel engines is the ... 1) 2) 3) 4) rotating camshaft. reversing latch. sliding camshaft. distributor type. 1 Engine Category Answer :
Q:
To find the indicated power developed in the cylinder the indicator card is used to determine the ....
1) 2) 3) 4) compression pressure. firing pressure.
mean effective pressure. mean height of the diagram.
3 Engine Category
Answer :
Q:
What method is employed in the design of waste heat boilers to obtain maximum heat transfer while maintaining low overall weight ?
1) 2) 3) 4)
Steel fins are installed on the generating tubes to increase the effective surface area.
An unfired exhaust gas preheater is added to increase the heat transfer rate.
An external superheated unit is located above the boiler to the gas passages.
Feedwater is preheated in a separately fired economizer.
1 Engine Category
Answer :
Q:
The flow through this heat exchanger is determined by the "Reynolds number". Depending on certain factors, this allows the system designer to select either...
1) 2) 3) 4)
streamline flow or contra flow. turbulent flow or laminar flow. parallel flow or turbulent flow. parallel flow or contra flow.
2 Engine Category
Q:
Why is this connecting rod eye split obliquely?
1) 2) 3) 4)
To decrease the bottom end bolt shock loading. To avoid setting up unecessary stress in the rod eye. To allow the piston/connecting rod to pass through the liner. To allow access to both of the bolts and bearing from one side of
the engine. 3
Engine Category
Answer :
Q:
If when in port there is an urgent need to pump bilge water from the vessel, what would you do ?
1) 2) 3) 4)
Authorise pumping the bilges over the side via the oily water separator.
Instruct the watchkeeper to lower the bilges only during night time. Issue strict instructions that the bilges must only be discharged to a shore tank or barge facility.
Instruct the watchkeeper to pump bilges to the dirty oil tank or
sludge tank and note in logbook 3
Engine Category
Answer :
Q:
After bunkering when all the fuel oil tanks have been topped off, which of the listed procedures should be followed next ?
1) 2) 3) 4)
The pressure vacuum relief valves should be reset.
The tanks should be sounded to make sure the levels are not rising.
The tanks should be marked with a bull stamp on the manifold filling valve. All of these. 2 Engine Category Answer :
Q:
A pump can empty a tank in 12 hours, another pump can empty the same tank in 4 hours, and another can empty this tank in 9 hours. If all three pumps are used together, how long would it take to empty it ? 1) 2) 3) 4) 4/9 hours 2 and 1/4 hours 2 hours 3 hours 2 Engine Category Answer :
Q:
Every ship above 400 tons gross shall be provided with tank(s) of adequate capacity to receive oily residues or sludges such as those resulting from ....
1) 2) 3) 4)
heavy fuel oil purification leakages, lantern and scavenge spaces leakages and drainages from engines.
lubricating purification and crankcase leakages from machinery and stern tube leakages.
diesel oil leakages from purification, main and auxiliary engine fuel leakages.
All oil leakages in the engine room inclusive of these.
4 Engine Category
Answer :
Q:
Concerning the designing and construction of Machinery Space Oily Residue Tanks (Sludge Tanks) what requirements, besides capacity, need to be met ?
1) 2) 3) 4)
All engine room overflows and leakage tanks must drain into them.. They must be capable of being pumped overboard through a 15ppm separating system.
They must have cleaning facilities and arrangements to discharge to reception facilities.
They must have steaming out and pumping out connections fitted.
3 Engine Category
Answer :
Q:
For ships not fitted with a sludge burning incinerator, the sludge tank capacity shall be directly proportional to ....
1) 2) 3) 4)
the size of the vessel.
the total horse power (or kWatt) generated in the engine room. the amount of fuel purified for daily consumption times the maximum period between voyage ports.
the number of purifiers fitted on board times the maximum range of
the ship. 3
Engine Category
Answer :
Q:
Written information must be available each time a ship carries out bunkering operations inclusive the titles. This information includes the names of the persons engaged in bunkering operations. Which persons ?
1) 2) 3) 4)
The responsible person in charge, the engineer officer in charge of bunkering in the engine room and the person(s) assigned on deck. The chief engineer, the engineer officer in charge in the engine room and the petty officer on deck.
The chief engineer, the duty engineer and the duty officer. The responsible person in charge, the duty engineer, the engineer
in charge of bunkering and the stand-by team on deck. 1
Engine Category
Q:
Written information must be available each time a ship carries out bunkering operations. This information must include the following....
1) 2) 3) 4)
the specific gravity of the oil and the level at which bunker tanks are to be closed.
the ventilation and overflow system of each tank and the bunker rate in tons per hour.
the procedures for topping off tanks and the bunker slow down rate. the bunkering rates, procedures for topping off tanks and the level
at which bunker tanks are to be closed. 4
Engine Category
Answer :
Q:
Written information must be available each time bunkering operations are carried out. This should include information about reporting oil spills and provide contact details for which of these organisations?
1) 2) 3) 4)
II, III, IV, VI, VIII, IX I, II, III, VI, VII, VIII I, III, IV, V, VIII, IX III, IV, V, VI, VII, IX
1 Engine Category
Answer :
Q:
What will cause the oil/water interface in this centrifugal separator to move outwards from its correct position?
1) 2) 3) 4)
An increase in the oil flow rate. A decrease in the viscosity of the oil. An increase in the temperature of the oil. An decrease in the temperature of the oil.
4 Engine Category
Answer :
Q:
From the sample diagrams shown, choose the correct voltage waveform measured across the load.
1) 2) 3) 4) 1 2 3 4 3 Engine Category Answer :
Q:
What is the function of the circuit shown here ?
1) 2) 3) 4)
DC to AC voltage converter. Three phase rectifier. Three phase AC converter. Three phase oscillator.
2 Engine Category
Answer :
Q:
What will be the binary output at A ?
1) 2) 3) 4) 1 0 1 1 1 0 2 Engine Category Answer :
Q:
What will be the binary output at E ?
1) 2) 3) 4) 1 0 1 0 1 1 2 Engine Category Answer :
Q:
Indicate the correct characteristic of the amplifier "A".
1) 2) 3) 4)
An input impedance lower than 1,000 Ohm A voltage gain greater than 100,000
An output impedance greater than 10,000 Ohm A frequency range less than 1kHz
2 Engine Category
Q:
An ideal operational amplifier is characterised by...
1) 2) 3) 4)
infinite input impedance. infinite output impedance. limited bandwidth.
limited open loop voltage gain.
1 Engine Category
Answer :
Q:
What does this symbol represent?
1) 2) 3) 4) A differential trigger. A binary register. A binary flip-flop. A digital amplifier. 3 Engine Category Answer :
Q:
What is a high-pass filter ?
1) 2) 3) 4)
A circuit that will only pass a high voltage. A circuit that blocks a high voltage. A circuit that will limit resistance.
A circuit that will only pass high frequency signals.
4 Engine Category
Answer :
Q:
Which of these formulas is used to calculate capacitive reactance (Xc) ? 1) 2) 3) 4) A B C D 2 Engine Category Answer :
Q:
The second potentiometer of this electric command system is located in the steering gear. What moves this potentiometer ?
1) 2) 3) 4)
The telemotor.
The rudder angle indicator.
The rudder position via the trunion connection. The eccentric pushrod on the HELE-SHAW pump.
3 Engine Category
Answer :
Q:
How is the set pressure (opening pressure) adjusted on the cylinder head safety valve of a diesel engine?
1) 2) 3) 4)
By adjusting the distance of the valve cone. By adjusting the lift height of the spindle. By fitting distance washers.
By adjusting the spring pressure.
4 Engine Category
Answer :
Q:
What control equipment drawing is shown here ?
1) 2) 3) 4)
An electric P-controller.
An electric differentiating amplifier.
An electric temperature measurement scanner. An electric pressure transmitter system.
1 Engine Category
Answer :
Q:
Here 'S' is the support point in the middle of pivoting arm 'AB'. For a given increase in water level the valve is opened by the same distance, therefore the amplification is 1. What will happen if b = 2 x a ?
1) 2) 3) 4)
The water will drop twice as fast in the tank
The valve will open twice the distance of the increased level The amplification is increased by 50 %
The process will not longer working
2 Engine Category
Q:
A six-pole asynchronous motor is connected to a power supply with a frequency of 50 Hz. If the rotor bar frequency is 2.3 Hz, what will be the speed of the motor ?
1) 2) 3) 4) 972 RPM 954 RPM 928 RPM 912 RPM 2 Engine Category Answer :
Q:
A six pole asynchronous motor is fed from a 60 Hz circuit and has a slip of 5 %. What is the motor speed ?
1) 2) 3) 4) 1720 RPM 1560 RPM 1140 RPM 960 RPM 3 Engine Category Answer :
Q:
A star connected induction motor operates on 220 V with power factor 0.7 and efficiency of 82 %. Its output is 8 HP. What is the phase, current and voltage?
1) 2) 3) 4)
I phase is 12.8 Ampere , phase voltage is 220 Volt. I phase is 27.3 Ampere, phase voltage is 127 Volt. I phase is 15.8 Ampere, phase voltage is 220 Volt. I phase is 22.7 Ampere, phase voltage is 127 Volt.
2 Engine Category
Answer :
Q:
A 3-phase 60 cycle motor delivers 50 HP to a pump (shaft output). What is the torque if the RPM is 1176 RPM ?
1) 2) 3) 4) 223 pound-feet 175 pound-feet 275 pound-feet 250 pound-feet 1 Engine Category Answer :
Q:
In these integrator circuits the air flow through the restrictor and the current through the resistance ...
1) 2) 3) 4)
remains constant. decreases with time. increases with time. is negative.
2 Engine Category
Answer :
Q:
What is the difference in function between these electrical and the pneumatic integrators ? 1) 2) 3) 4) None
The pneumatic integrator is slower The electric integrator is slower They work in opposite directions
1 Engine Category
Answer :
Q:
The size of any electrical conductor should be such that in practice, the voltage drop at full load will not exceed ...
1) 2) 3) 4) 1 % 2 % 3 % 5 % 2 Engine Category Answer :
Q:
Two 3 phase 4160 Volt, 60 Hz alternators are operated in parallel. The total load of the system is 1050 kW with power factor 0.75 lagging. If alternator No 1 is carrying 700 kW at 80 % power factor lagging ...
1) 2) 3) 4)
the Power Factor of alternator No 2 is lagging 0.7352. the Power Factor of alternator No 2 is lagging 0.7064. the Power Factor of alternator No 2 is lagging 0.6914. the Power Factor of alternator No 2 is lagging 0.658.
4 Engine Category
Q:
Alternator (A) 100 kVA runs parallel with alternator (B) 125 kVA, both are 3 phase, 240 V, 60 Hz. The load of A is 60 kW, 90% power factor and the load of B is 80 kW, 70 % power factor. What is the total load ? 1) 2) 3) 4) 472.8 Amps 458.8 Amps 429.8 Amps 416.8 Amps 3 Engine Category Answer :
Q:
The pick up and the time settings of reverse power relays are adjustable. If the prime mover of the alternator is a steam turbine what is the trip level setting ?
1) 2) 3) 4) 0.5 - 1 % 2 - 3 % 4 - 6 % 6 - 7 % 2 Engine Category Answer :
Q:
If the prime mover of an alternator is a diesel engine, what should the Reverse Power Relay's pick up setting be ?
1) 2) 3) 4) 5 - 10 % 10 - 15 % 8 - 10 % 5 - 12 % 4 Engine Category Answer :
Q:
The characteristics shown here indicate a ramp input on the left together with the corresponding output on the right of ...
1) 2) 3) 4) a proportional controller. a pure integrator. a pure differentiator.
a proportional integrating controller.
2 Engine Category
Q:
These graphs are, left, the step input and, right, the output response of a controller. What characteristics are shown ?
1) 2) 3) 4)
The controller response output characteristics. The integrator characteristics.
The PI characteristics.
The integrator differential characteristics.
2 Engine Category
Answer :
Q:
For which type of controller are the input and output characteristics shown here ?
1) 2) 3) 4)
A pressure indicating controller. A proportional integrating controller. A PI differentiating controller. A pneumatic indicating controller.
2 Engine Category
Answer :
Q:
In this drawing, the triangle marked "A" represents ...
1) 2) 3) 4) an operational amplifier. an ampere-differential transmitter. an analog converter. a current converter. 1 Engine Category Answer :
Q:
Which resistor determines the proportional band on this electronic proportional integrating controller ?
1) 2) 3) 4) Rf R1 R2 R3 4 Engine Category Answer :
Q:
Fitting a restriction R1 in the supply to the proportional feedback of this PID controller ensures that for an initial small variation on the input, the initial response on the output will be ...
1) 2) 3) 4) zero. very weak. proportional. strong. 4 Engine Category Answer :
Q:
For which control instrument are these the input (left) and the output or response (right) characteristics ?
1) 2) 3) 4)
A pressure differentiator.
A proportional differentiating controller. A pressure controlling data register. A pneumatic differentiating controller.
2 Engine Category
Answer :
Q:
For this PID controller to act only as a P (proportional) controller, what should be the arrangement of restricting valves R1 and R2 ?
1) 2) 3) 4)
R1 fully open, R2 closed R1 fully open, R2 fully open R1 closed, R2 closed R1 closed, R2 fully open
1 Engine Category
Answer :
Q:
For which kind of controller are the input and output characteristics shown here ?
1) 2) 3) 4)
A pressure indicating controller
A proportional integrating-differentiating controller A proportional indicating differentiator
A pneumatic differential summator
2 Engine Category
Q:
In the output characteristics (right) of this controller, which response lines are clearly shown ?
1) 2) 3) 4)
The output, variation and differentiation. The proportional output, offset and integration. The proportional, integration and differentiation. The proportional, variation and integration.
3 Engine Category
Answer :
Q:
How is the differentiating action of this PID controller obtained ?
1) 2) 3) 4) By C and R1 By C and R2 By C and R3 By C and RL 1 Engine Category Answer :
Q:
The three conductor system used by Wheatstone Bridge lay-outs is intended to provide ....
1) 2) 3) 4)
compensation for changing conductor resistance by changing temperature.
zero setting at all times by variable resistances to be measured. balancing of the bridge by very high or very low temperatures. conversion of an electrical signal into a pneumatic signal.
1 Engine Category
Answer :
Q:
The function of this measuring system is to ....
1) 2) 3) 4)
convert a digital signal into a pressure.
convert an electric temperature measurement into a pneumatic signal.
convert Wheatstone Bridge readings into remote pressure readings.
convert Field Effect Transistor readings into a temperature reading.
2 Engine Category
Q:
The resistance characteristic of Platinum is linear. The resistance characteristic of Nickel is non-linear. How can the characteristic of Nickel be made linear ?
1) 2) 3) 4)
By using a three-wire system Wheatstone Bridge By fitting a compensation cable
By fitting another resistance in parallel By fitting another resistance in series
3 Engine Category
Answer :
Q:
Item No 2 of this Wheatstone Bridge is ...
1) 2) 3) 4)
the field wire fed by amplifier A the feed-back coil fed by amplifier A
the field balance indicating field wire of amplifier output the thermal resistance fed by the output of amplifier A
4 Engine Category
Answer :
Q:
The potential of this thermocouple bridge is zero if all
connections are kept at the same temperature. Why is the indication of the potentiometer zero ?
1) 2) 3) 4)
Because of the second balancing couple B.
Because of the copper (Cu) calibration wiring connected to C and D.
Because A and B couples are opposed.
Because the connections in A and B and in C and D are opposed
4 Engine Category
Answer :
Q:
What is the fastening device shown at the left side of the drawing ? 1) 2) 3) 4) A beam clamp. An angle iron fastener. A frame clamp. A support fastener.
1 Engine Category
Q:
What is the measuring instrument shown on the left top ?
1) 2) 3) 4)
An outside calliper. An outside pipe calliper. A Dornier calliper. A Vernier calliper. 4 Engine Category Answer :
Q:
What is the accuracy of the measuring instrument shown on the top left ? 1) 2) 3) 4) 1/10th to 1/20th millimetre 1/20th to 1/25th millimetre 0.1 to 0.5 millimetre 0.1 to 0.25 millimetre 1 Engine Category Answer :
Q:
Suppose you need to draw a circle of 186 mm diameter on metal or on a packing sheet. How would you do this using the compass shown top centre ?
1) 2) 3) 4)
Measure 186mm on packing, draw 2 lines through the centre. Set opening of compass legs to 93 mm using a steel ruler. Indicate straight line with points 0mm, 93mm and 186mm on packing.
Project first a hexagon on packing or steel plate.
2 Engine Category
Answer :
Q:
What is the accuracy of a micrometer shown top right ?
1) 2) 3) 4) 0.1 to 0.2 millimetres. 0.1 to 0.5 millimetres. 0.01 to 0.005 millimetres. 0.05 to 0.01 millimetres. 3 Engine Category Answer :
Q:
What is the measuring device shown at the bottom ?
1) 2) 3) 4)
A tracing instrument. A right angle plane tracer. An angular tracer.
A 90 degree angle projector.
2 Engine Category
Answer :
Q:
What is the measuring device shown in the top and what is it used for ?
1) 2) 3) 4)
A thread gauge. To measure thread size on bolts and studs. A bolt thickness gauge. To measure the size of bolts.
Thread thickness gauge. Measure clearance of bolts and nuts. Thread wear down gauge. Measures wear-down on bolts / nuts.
1 Engine Category
Answer :
Q:
What measuring device is shown in the bottom left corner ?
1) 2) 3) 4) A pipe calliper. An inside tracer.
An adjustable inside calliper. A bore calliper.
3 Engine Category
Answer :
Q:
What is the purpose of the calliper shown in the bottom left corner ?
1) 2) 3) 4)
Measuring piston ring gaps. Measuring fuel pump lifts.
Measuring inside diameters of hydraulic pipes. Measuring inside diameters or gaps.
4 Engine Category
Q:
What is the measuring device shown in the right bottom corner ?
1) 2) 3) 4) A flange calliper. A pipe calliper.
An adjustable pipe calliper. An adjustable outside calliper.
4 Engine Category
Answer :
Q:
How will the tool shown at the top be powered if it is to be used on tankers ?
1) 2) 3) 4)
By battery power, 12 Volt maximum. By AC power 110 Volt, 60 Hz maximum. By compressed air 8.5 kg/cm2 maximum. By compressed air 3.5 kg/cm2 maximum.
3 Engine Category
Answer :
Q:
For what are RECOIL-LESS HAMMERS used ?
1) 2) 3) 4)
To assemble tight fitting parts. To chisel deep grooves in metal. To hammer on ring spanners.
To test the foundation bolts of engines.
1 Engine Category
Answer :
Q:
What kind of tool is shown top left and for what is it used ?
1) 2) 3) 4)
A ratchet spanner / Used on main engine piston crowns. A torque spanner / Used on foundation bolts.
A forged torque spanner / Used to hammer nuts.
A forged ring spanner / Used to be hammered by a sledgehammer.
4 Engine Category
Q:
What is the tool shown upper right ?
1) 2) 3) 4)
A bearing cap-wrench. A purifier assembly wrench. An orifice removal wrench. A hydrant wrench.
4 Engine Category
Answer :
Q:
What tool is shown bottom left and for what is it used ?
1) 2) 3) 4)
Articulated socket wrench/ Out of centre extension. Square ratchet wrench / 45 degree out of line wrench. Flexible socket spanner / For sunken nuts removal and fitting. Flexible ratchet wrench / As extension for ratchets.
1 Engine Category
Answer :
Q:
What kind of tool is shown right bottom and into what does it fit ?
1) 2) 3) 4)
A bar wrench / It fits into exhaust gas pipe fastening bolts. An angle wrench / It fits into cylinder cover plugs.
A socket bolt wrench / It fits into Allen Bolts (Allen keys). A torque wrench / It fits over nuts.
3 Engine Category
Answer :
Q:
What kind of wrench is shown upper left ?
1) 2) 3) 4) An adjustable spanner. A spring wrench.
A Stillwell adjustable wrench. A Stilson wrench.
4 Engine Category
Q:
What kind of tool is shown upper right ?
1) 2) 3) 4) A Stilson wrench. A pipe wrench.
An adjustable nut wrench. An adjustable vice grip wrench.
4 Engine Category
Answer :
Q:
What is the tool shown bottom left ?
1) 2) 3) 4)
A ratchet spanner. A flexible ring spanner. A forged flexible star-spanner A torque ring spanner.
1 Engine Category
Answer :
Q:
What kind of tool is shown top right ?
1) 2) 3) 4)
A star spanner, double forged. A mechanic's spanner.
A common bolt spanner, double forged. A double ended open jaw spanner.
4 Engine Category
Answer :
Q:
What is the tool shown top left ?
1) 2) 3) 4)
A flat mechanic's double spanner. A double ended ring spanner. A double flat spanner. A forked double spanner
2 Engine Category
Q:
What kind of tool is shown bottom left ? How can it be extended ?
1) 2) 3) 4)
A star spanner / Extended by torque bar. An open spanner / Cannot be extended. A double hexagon spanner / Extended by rod.
A single ended ring spanner / Extended by a pipe or tube.
4 Engine Category
Answer :
Q:
What kind of tool is shown bottom right bottom ?
1) 2) 3) 4)
A combined open ended spanner and socket wrench. A flat ratchet spanner.
A socket wrench forked spanner. A single ended forked ratchet wrench.
1 Engine Category
Answer :
Q:
What kind of assembly does the upper left piece and the upper centre piece make ?
1) 2) 3) 4)
A socket wrench assembly. A ratchet spanner.
A ratchet lever assembly. A ratchet torque assembly.
1 Engine Category
Answer :
Q:
What kind of tool is shown on the bottom left corner of the picture and when is it used ?
1) 2) 3) 4)
A rod spanner / For cylinder cover tightening. An extended spanner / When the nut is found frozen.
A hexagon fork spanner. / To apply extra force when tightening. A pinchbar spanner / When there is no side space available.
4 Engine Category
Q:
What kind of tool is shown bottom centre ?
1) 2) 3) 4)
An adjustable pocket spanner. A pipe wrench. A shifting spanner. A Stilson wrench. 2 Engine Category Answer :
Q:
On what equipment should the wrench shown bottom right be used ?
1) 2) 3) 4)
On bolts and nuts. On broken studs.
On large diameter pipes and shafts. On electric motor couplings.
3 Engine Category
Answer :
Q:
The tools shown here are ...?
1) 2) 3) 4) engineer's tools. electrician's tools.
duty engineer's and watchkeeper's control room tools. welder's tools.
2 Engine Category
Answer :
Q:
What is the tool shown top left called and by whom is it mostly used ?
1) 2) 3) 4)
Welding rod pliers / fitters and welders. Manometer curved pliers / engineers.
Instrument long nose pliers / Automation and control engineers. Curved long nose pliers / Electricians.
4 Engine Category
Q:
What is the tool shown top right and by whom is it used ?
1) 2) 3) 4)
Combination pliers / For general use. Electrician's pliers / By the electrician.
Mechanical pliers / By the engineers and fitters. Flat nose pliers / By the electrician.
4 Engine Category
Answer :
Q:
What is the tool shown bottom left and by whom is it used ?
1) 2) 3) 4)
Inside circlip pliers / By engineers. Outside circlip pliers / By engineers. Round point pliers / By electricians. Eye nose pliers / By the electrician.
3 Engine Category
Answer :
Q:
What kind of tool is shown bottom left ? What is its use ?
1) 2) 3) 4)
Mason's chisel / To break up cement boxes. Blacksmith's chisel / To cut steel bars and rods. Hot chisel / To cut bolts and nuts.
Cold chisel / A general purpose cutting and splitting tool.
4 Engine Category
Answer :
Q:
If the welding torch and the oxygen/acetylene pressure regulators are fitted in the engine room workshop, to what should they be connected ?
1) 2) 3) 4)
The oxygen and acetylene bottles. Oxygen and acetylene pipe lines.
Gas bottles depending the material to weld. Safety valves.
2 Engine Category
Q:
When igniting the welding torch, how would you proceed ?
1) 2) 3) 4)
Open acetylene, ignite, than adjust flame with oxygen. Open oxygen and acetylene, than ignite
Open acetylene, ignite, open oxygen than adjust flame Ignite whilst controlling acetylene, open oxygen, adjust flame
4 Engine Category
Answer :
Q:
What is the gas welding equipment shown right side ?
1) 2) 3) 4)
A heavy duty welding torch. A blow-by torch. A cutting torch. An illumination torch. 3 Engine Category Answer :
Q:
How should oxygen and acetylene bottles be transported. ?
1) 2) 3) 4)
In a safety net, well secured..
In a special provided stand with clamps. With the caps secured by gas-tight tape. In an upright position.
4 Engine Category
Answer :
Q:
Depending on the plate thickness to be cut you should increase ...?
1) 2) 3) 4)
the acetylene flow. the oxygen flow.
the oxygen and the acetylene flow. the nozzle size.
4 Engine Category
Q:
If you are welding in the workshop, you must ensure in advance that the bridge is told and that ...
1) 2) 3) 4)
the Chief Engineer is informed as well. the emergency fire pump is started.
the fire extinguishers of the engine room platform are not expired. the fire alarm for the workshop platform is switched off.
4 Engine Category
Answer :
Q:
What is the function of this hydraulic stressing tool when fastening and unfastening bolts/nuts on an engine ?
1) 2) 3) 4)
To fasten or unfasten the nut.
To press the part to be fastened together or down so that the nut can be tightened by hand.
To apply pressure on cylinder head or bearing so that the bolts/nuts can be tightened by hand.
To elongate the bolts at required stress value so that the nuts can
be tightened to the position to ensure correct pre-tensioning. 4
Engine Category
Answer :
Q:
The "scleroscope" is used to determining ...
1) 2) 3) 4)
the "hardness " of a metal.. the "thickness" of a metal. the "brittleness" of a metal. the existence of cracks in metal.
4 Engine Category
Answer :
Q:
Which of these four screws is a fillister head screw ?
1) 2) 3) 4) No 1 No 2 No 3 No 4 1 Engine Category Answer :
Q:
What type of screw is No. 2 ?
1) 2) 3) 4)
A hexagon head screw. A button head screw. A flat head screw. A fillister head screw.
3 Engine Category
Answer :
Q:
What type of screw is No. 3 ?
1) 2) 3) 4)
A button head screw. A hexagon head screw. A fillister head screw. A flat head screw.
2 Engine Category
Answer :
Q:
What type of screw is No. 4 ?
1) 2) 3) 4)
A hexagon head screw. A fillister head screw. A flat head screw. A button head screw.
4 Engine Category
Answer :
Q:
For cutting hard materials, metal saws with ... blades should be used ?
1) 2) 3) 4) large pitch. small pitch. sharp angle teeth. dual angle teeth.
2 Engine Category
Q:
When starting to tap a hole, how is the process checked for perpendicularity? 1) 2) 3) 4) By sighting. By spirit level. By try square. By straight edge. 3 Engine Category Answer :
Q:
What general name is given to files which remove maximum metal in the shortest time?
1) 2) 3) 4) Single cut. Draw file. Double cut. Bastard. 3 Engine Category Answer :
Q:
The figure shows welded tee joints. What preparation is required for No.2 ? 1) 2) 3) 4) Single bevel Double bevel Double V Double U 2 Engine Category Answer :
Q:
When fitting new bottom ends to a small diesel engine, the bottom end bolts have no locking devices. Which of the following should be fitted. 1) 2) 3) 4) Taper pins
Bifurcated taper pins Parallel pins Split pins
4 Engine Category
Q:
The sketch shows the rollers for a pyramid rolling machine. Which is the idler?
1) 2) 3) 4) No.1 No.2 No.3 No.4 1 Engine Category Answer :
Q:
What device is fitted to prevent component gases mixing in hoses? 1) 2) 3) 4) A relief vale. A stop valve. A by-pass valve. A hose check valve.
4 Engine Category
Answer :
Q:
The diagram shows four types of machine screws. Identify the cheese head screw.
1) 2) 3) 4) No.1 No.2 No.3 No.4 4 Engine Category Answer :
Q:
Identify the powered hand tool No. 2 ?
1) 2) 3) 4) Drill Grinder Screwdriver Input wrench 4 Engine Category Answer :
Q:
Perspex is an example of a thermoplastic, How is this best heated prior to bending?
1) 2) 3) 4)
Heat in an oven. Heat in boiling water. Flame heat.
Hot air stream.
2 Engine Category
Answer :
Q:
It is required to make a drip tray. What machine would be used?
1) 2) 3) 4)
Powered brake press. Rolling machine.
Hand operated folding machine. Nibbler.
3 Engine Category
Answer :
Q:
In readiness for use, a good scraper would have it's cutting edges? 1) 2) 3) 4) Ground Oil stoned Ground Oil stoned Honed Sand stoned Polished Sand stoned 2 Engine Category Answer :
Q:
A method of joining two plastics together is by solvent welding. What is this process?
1) 2) 3) 4)
Application of a thin film of adhesive to joining surfaces.
Adhesive is applied and dissolves the plastic material being joined. A heating tool is applied with pressure to required join.
A high frequency current is applied to clamps at the join.
2 Engine Category
Q:
When gas cutting a mild steel plate, what does the size of nozzle used depend upon?
1) 2) 3) 4)
Thickness the of plate The gases used
Impurities in the material Gases remaining in the cylinder
1 Engine Category
Answer :
Q:
The sketch shows a partially completed knocked up joint made from 0.5 mm plate. Which direction of bending completes the joint?
1) 2) 3) 4) No.1 No.2 No.3 No.4 2 Engine Category Answer :
Q:
.A short box girder is fabricated from 8 mm steel plate. What edge preparation is required for No.2 ?
1) 2) 3) 4)
None.
Single bevel Closed corner. Double bevel closed corner. Double U.
1 Engine Category
Answer :
Q:
Welding fumes can be dangerous. When welding in the workshop how is welding rendered safe?
1) 2) 3) 4) By respirator. By extraction. By ventilation.
By extractor welding gun.
3 Engine Category
Q:
Which set of equipment is required to mark out the keyway of a 30 mm diameter shaft? 1) 2) 3) 4) Porthole glass Slip gauges Dial gauge Vee block Polish flat bar Slip gauges Surface plate Vee block 4 Engine Category Answer :
Q:
A blind hole in a valve casing requires to be tapped 12 mm. Which tap(s) would be used?
1) 2) 3) 4)
Plug.
Second and plug. Taper and plug.
Taper, second and plug.
4 Engine Category
Answer :
Q:
For the fillet weld shown, what is the throat length?
1) 2) 3) 4) ad ae Db af 4 Engine Category Answer :
Q:
A crankcase weld requires detailed inspection while on passage. How would this be carried out?
1) 2) 3) 4) By x-ray. Visually. By dye penetrant. By magnetic particle. 3 Engine Category Answer :
