Instrumentation

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1.

1. _{What is the degree of exactness of measurement when compared to the}_{What is the degree of exactness of measurement when compared to the}

expected value of the variable

expected value of the variable being measured?being measured?

1. 1. _Accuracy_Accuracy 2. 2. _Error_Error 3. 3. _Deviation_Deviation 4. 4. _Precision_Precision ANSWER: A ANSWER: A 2.

2. _{The art or process of}_{The art or process of determining the existence or knowing the}_{determining the existence or knowing the}

magnitude of something, directly or indirectly in terms of

magnitude of something, directly or indirectly in terms of a recognizeda recognized standard. standard. 1. 1. _Measurement_Measurement 2. 2. _Testing_Testing 3. 3. _Recording_Recording 4. 4. _Evaluating_Evaluating ANSWER: A ANSWER: A 3.

3. _{A procedure or sequence of}_{A procedure or sequence of operations for determining whether a}_{operations for determining whether a}

component or equipment is functioning or

component or equipment is functioning or working normally.working normally.

1. 1. _Measurement_Measurement 2. 2. _Test_Test 3. 3. _Recording_Recording 4. 4. _Evaluating_Evaluating ANSWER: B ANSWER: B

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4.

4. _{In measurement, what do you call the degree of exactness compared to}_{In measurement, what do you call the degree of exactness compared to}

the expected value of the

the expected value of the variable being measured?variable being measured?

1. 1. _precision_precision 2. 2. _accuracy_accuracy 3. 3. _sharpness_sharpness 4. 4. _correctness_correctness ANSWER: B ANSWER: B 5.

5. _{A measure of consistency or repeatability of measurements is called}_{A measure of consistency or repeatability of measurements is called} 1. 1. _precision_precision 2. 2. _accuracy_accuracy 3. 3. _sharpness_sharpness 4. 4. _correctness_correctness ANSWER: A ANSWER: A 6.

6. _{Precision is also known as}_{Precision is also known as} 1. 1. _correctness_correctness 2. 2. _accuracy_accuracy 3. 3. _sharpness_sharpness 4. 4. _{reproducibility}_{reproducibility} ANSWER: D ANSWER: D 7.

7. _{In measurements, the sum of a set}_{In measurements, the sum of a set of numbers divided by the total}_{of numbers divided by the total}

number of pieces of data in the

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4.

4. _{In measurement, what do you call the degree of exactness compared to}_{In measurement, what do you call the degree of exactness compared to}

the expected value of the

the expected value of the variable being measured?variable being measured?

1. 1. _precision_precision 2. 2. _accuracy_accuracy 3. 3. _sharpness_sharpness 4. 4. _correctness_correctness ANSWER: B ANSWER: B 5.

5. _{A measure of consistency or repeatability of measurements is called}_{A measure of consistency or repeatability of measurements is called} 1. 1. _precision_precision 2. 2. _accuracy_accuracy 3. 3. _sharpness_sharpness 4. 4. _correctness_correctness ANSWER: A ANSWER: A 6.

6. _{Precision is also known as}_{Precision is also known as} 1. 1. _correctness_correctness 2. 2. _accuracy_accuracy 3. 3. _sharpness_sharpness 4. 4. _{reproducibility}_{reproducibility} ANSWER: D ANSWER: D 7.

7. _{In measurements, the sum of a set}_{In measurements, the sum of a set of numbers divided by the total}_{of numbers divided by the total}

number of pieces of data in the

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1.

1. _{geometric mean}_{geometric mean} 2.

2. _{algebraic mean}_{algebraic mean} 3.

3. _{arithmetic mean}_{arithmetic mean} 4.

4. _{effective value}_{effective value}

ANSWER: C ANSWER: C

8.

8. _{The deviation of a reading from the expected value}_{The deviation of a reading from the expected value} 1. 1. _accuracy_accuracy 2. 2. _precision_precision 3. 3. _error_error 4. 4. _difference_difference ANSWER: C ANSWER: C 9.

9. _{Errors due to frictions of the}_{Errors due to frictions of the meter movement, incorrect spring tension,}_{meter movement, incorrect spring tension,}

improper calibration or faulty instruments: improper calibration or faulty instruments:

1.

1. _{Observational errors}_{Observational errors} 2.

2. _{Environmental errors}_{Environmental errors} 3.

3. _{Instrument errors}_{Instrument errors} 4.

4. _{Gross errors}_{Gross errors}

ANSWER: C ANSWER: C

10.

10._{When an instrument is subjected to harsh environments such as high}_{When an instrument is subjected to harsh environments such as high}

temperature, strong magnetic, electrostat

temperature, strong magnetic, electrostatic or ic or electromagnetic field, itelectromagnetic field, it may have detrimental effects and cause errors known as

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1. _{Observational errors} 2. _{Environmental errors} 3. _{Instrument errors} 4. _{Gross errors}

ANSWER: B

11._{Errors introduced by the observer or user.} 1. _{Observational errors}

2. _{Environmental errors} 3. _{Instrument errors} 4. _{Gross errors}

ANSWER: A

12._{Errors in analog meter reading due to your physical position with}

respect to the meter scale.

1. _{parallax error} 2. _{angular error} 3. _{linear error} 4. _deviation

ANSWER: A

13._{What do you call the difference between any number within the set of}

numbers and the arithmetic mean of that set of numbers?

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2. _{angular error} 3. _{linear error} 4. _deviation

ANSWER: D

14._{An instrument or device having recognized permanent or stable value}

that is used as a reference.

1. _{standard instrument/device} 2. _{reference instrument/device} 3. _{fixed instrument/device}

4. _{ideal instrument/device}

ANSWER: A

15._{The smallest change in a measured variable to which an instrument will}

respond. 1. _{quantize value} 2. _resolution 3. _minimum 4. _{step size} ANSWER: B

16._{A device or mechanism used to determine the value of a quantity under}

observation.

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2. _evaluator 3. _instrument 4. _sensor

ANSWER: C

17._{What is the basic unit for measuring current flow?} 1. _coulomb

2. _ampere

3. _{atomic weight} 4. _volt

ANSWER: B

18._{An instrument used to detect and measure the presence of electrical}

current is generally called

1. _{D’Arsonval meter} 2. _{electrodynamometer} 3. _galvanometer

4. _{potentiometer}

ANSWER: C

19._{What is the common type of meter movement?} 1. _{Fixed coil}

2. _Farad

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4. _Digital

ANSWER: C

20._{A permanent-magnet moving-coil instrument.} 1. _{induction instrument}

2. _{D’Arsonval meter movement} 3. _{moving-iron instrument}

4. _{moving-magnet instrument}

ANSWER: B

21._{An instrument which depends on current in one or more foxed-coils}

acting on one or more pieces of soft iron, at least one of which is movable.

1. _{moving-magnet instrument} 2. _{moving-iron instrument}

3. _{D’Arsonval meter movement} 4. _{induction instrument}

ANSWER: B

22._{What is that device, which depends on the action of a movable}

permanent magnet, in aligning itself in the resultant field, produced either by a fixed permanent magnet and adjacent coil or coils carrying current, or by two or more current-carrying coils whose axes are

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1. _{D’Arsonval meter movement} 2. _{induction instrument}

3. _{moving-magnet instrument} 4. _{moving-iron instrument}

ANSWER: C

23._{What ammeter is mostly used in measuring high-frequency currents?} 1. _{electrostatic}

2. _moving-coil 3. _dynamometer 4. _thermocouple

ANSWER: D

24._{Measurement of high dc-voltages is usually done by using} 1. _{Electrostatic}

2. _moving-coil 3. _dynamometer 4. _thermocouple

ANSWER: A

25._{Measuring instrument that can be used only to measure voltages.} 1. _{electrostatic}

2. _thermocouple 3. _dynamometer

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4. _{permanent-magnet moving-coil}

ANSWER: A

26._{This instrument measures temperatures by electric means, especially}

temperatures beyond the range of mercury thermometers.

1. _pyrometer

2. _{electrostatic instrument} 3. _{moving-magnet instrument}

4. _{permanent-magnet moving-coil instrument}

ANSWER: A

27._{This instrument refers to that one, which measures the intensity of the}

radiation, received from any portion of the sky.

1. _megaohmmeter 2. _pyranometer 3. _Megger

4. _galvanometer

ANSWER: B

28._{What is the normal indication on a megger (megohmmeter) when}

checking insulation?

1. _one 2. _infinity

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4. _zero

ANSWER: B

29._{Resistance measuring instrument particularly used in determining the}

insulation resistance. 1. _megaohmmeter 2. _Megger 3. _galvanometer 4. _{A or B are correct} ANSWER: D

30._{An electrodynamic meter used to measure power} 1. _{hook-on type voltmeter}

2. _wattmeter

3. _{watt-hour meter} 4. _multi-meter

ANSWER: B

31._{A device used to mechanically measure the output power of a motor.} 1. _dynamometer

2. _Megger

3. _{concentric-vane instrument} 4. _{radial-vane instrument}

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ANSWER: A

32._{An indicating instrument whose movable coils rotate between two}

stationary coils, usually used as wattmeter.

1. _{induction-type meter} 2. _{radial-vane instrument} 3. _{electrodynamometer}

4. _{concentric-vane instrument}

ANSWER: C

33._{Dynamometers are mostly used as} 1. _voltmeter

2. _ammeter 3. _ohmmeter 4. _wattmeter

ANSWER: D

34._{What damping method is generally used in dynamometers?} 1. _spring

2. _{fluid friction}

3. _{eddy-current damping} 4. _{air friction}

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35._{Which dynamometer instrument has a uniform scale?} 1. _voltmeter 2. _ammeter 3. _ohmmeter 4. _wattmeter ANSWER: D

36._{For a dynamometer to be able to measure high current, a ________}

should be used. 1. _{shunt resistor} 2. _multiplier 3. _CVDT 4. _{current transformer} ANSWER: D

37._{Error in voltmeter reading is due to} 1. _insertion

2. _loading

3. _{battery aging} 4. _conversion

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38._{Error in ammeter reading id due to} 1. _insertion 2. _loading 3. _{battery aging} 4. _conversion ANSWER: A

39._{Which type of meter requires its own power source?} 1. _{A voltmeter}

2. _{An ammeter} 3. _{An ohmmeter} 4. _{A wattmeter}

ANSWER: C

40._{Error in ohmmeter reading is due to} 1. _insertion

2. _loading

3. _{battery aging} 4. _{meter friction}

ANSWER: C

41._{Decreasing the value of the shunt resistor of an ammeter, its current}

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1. _increases 2. _decreases

3. _{remains constant} 4. _{none of the above}

ANSWER: A

42._{Increasing the value of the series resistor of a voltmeter, its voltage}

measuring capability

3. _{remains constant} 4. _{none of the above}

ANSWER: A

43._{A device that is used to measure current without opening the circuit} 1. _{megger test}

2. _{clamp probe} 3. _ammeter 4. _multi-meter

ANSWER: B

44._{Which of the ammeter below that has no insertion error?} 1. _{D’Arsonval meter}

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3. _micrometer

4. _{meter with current transformer}

ANSWER: B

45._{To prevent damage of the multirange ammeter during selection, a/an}

_______ should be used. 1. _{direct shunt} 2. _{selected shunt} 3. _{Ayrton shunt} 4. _{shunt fuse} ANSWER: C

46._{For the greatest accuracy, what should be the input impedance of a}

VOM be? 1. _{1,000 ohms/V} 2. _{50,000 ohms/V} 3. _{as large as possible} 4. _{as small as possible} ANSWER: C

47._{Voltage measurement in a high impedance circuit requires a voltmeter}

with

1. _{low input impedance} 2. _{high input impedance}

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3. _{high voltage probe} 4. _{low voltage probe}

ANSWER: B

48._{A meter has a full-scale current of 50μA, what is its sensitivity?} 1. _20kΩ/V

2. _20V/Ω 3. _50kΩ/V 4. _50μA/V

ANSWER: A

49._{If a meter with a full-scale current of 100μA is used as an ac voltmeter}

with half-wave rectification, its ac sensitivity is

1. _{10,000 Ω/V} 2. _{4,500 Ω/V} 3. _{9,000 Ω/V} 4. _{100 Ω/V}

ANSWER: B

50._{In order to make an accurate measurement as possible, the internal}

resistance of a voltmeter must be

1. _{as high as possible} 2. _{as low as possible}

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4. _{proportional to the current range}

ANSWER: A

51._{An ammeter has a full-scale deflection current of 100mA. If the same}

ammeter is used to measure a full-scale current of 1.0 ampere, what is the value of the shunt resistor in ohms if the voltage across the meter is 9.0 volts? 1. _9.0 2. ₁₀ 3. ₉₀₀ 4. ₁₀₀ ANSWER: B

52._{What is the purpose of the rheostat in ohmmeter?} 1. _{balancing resistance}

2. _{counter resistance of measured circuit} 3. _{coil resistance}

4. _{compensate aging battery of the meter}

ANSWER: D

53._{The zero-adjust control in an analog type ohmmeter is used to} 1. _{compensate for the differing internal battery voltage}

2. _{make sure the pointer is moving correctly} 3. _{align the infinity resistance position}

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4. _{align the zero-voltage position}

ANSWER: A

54._{The scale of a hot wire instrument is a/an __________ function.} 1. _linear

2. _squared 3. _log

4. _exponential

ANSWER: B

55._{Moving iron instrument have a scale function that is} 1. _log

2. _exponential 3. _linear

4. _squared

ANSWER: D

56._{To increase the measuring capability of a moving-iron ac ammeter, a}

_______ should be used.

1. _shunt 2. _multiplier

3. _{swamping resistors}

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ANSWER: D

57._{Which electrical instruments below is the most sensitive?} 1. _moving-iron

2. _dynamometer 3. _thermocouple 4. _PMMC

ANSWER: D

58._{Basically, a PMMC instrument can be used only in} 1. _{ac measurements}

2. _{dc measurements} 3. _{rms measurements} 4. _{all of the above}

ANSWER: B 59._{Controlling torque in PMMC.} 1. _{spring action} 2. _{magnetic action} 3. _{electromagnetic action} 4. _{tension cable} ANSWER: A

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60._{What damping method is used in induction type ammeters?} 1. _{air friction}

2. _{electrostatic damping} 3. _{fluid friction}

4. _{eddy current damping}

ANSWER: D

61._{Induction type instruments are mostly used as} 1. _voltmeter

2. _ammeter 3. _wattmeter

4. _{watt-hour meter}

ANSWER: D

62._{In indicating instruments, what will happen to the controlling torque if the}

deflection becomes greater?

3. _{remains unchanged} 4. _{drops to zero}

ANSWER: A

63._{The force(s) that is(are) acting on the pointer of an indicating instrument}

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1. _{controlling torque} 2. _{deflecting torque} 3. _{damping torque} 4. _{A & B above}

ANSWER: D

64._{What is(are) the force(s) acting on the pointer of an indicating}

instrument when it is in motion?

1. _{controlling and deflecting torques} 2. _{damping and deflecting torques} 3. _{controlling and damping torques}

4. _{controlling, damping, deflecting torques}

ASNWER: D

65._{Material that is mostly used as a pointer in indicating instruments.} 1. _{soft iron}

2. _aluminum 3. _silver 4. _stainless

ANSWER: B

66._{A Kelvin electrostatic voltmeter uses what method of damping?} 1. _{fluid friction}

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3. _{mechanical friction} 4. _{eddy-current damping}

ANSWER: A

67._{Shunts in meters should have a _________ temperature coefficient of}

resistance. 1. _positive 2. _negative 3. _{very small} 4. _{very large} ANSWER: C

68._{In a moving coil ammeter, a _________ is connected in series with the}

soil to compensate for temperature variations.

1. _{limiting resistor} 2. _{shunt resistor} 3. _multiplier

4. _{swamping resistor}

ANSWER: D

69._{Where can we use the dynamometer?} 1. _{dc only}

2. _{ac only} 3. _{dc and ac}

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4. _{peak measurement}

ANSWER: C

70._{What is the meter that depends for its operation on the forces of}

attraction and repulsion between electrically charged bodies?

1. _{induction instrument} 2. _{electrostatic instrument} 3. _{moving-magnet instrument} 4. _{D’Arsonval meter movement}

ANSWER: B

71._{What do you call of an instrument that depends for its operation on the}

reaction between magnetic flux set up by currents in fixed windings and other currents set up by electromagnetic induction in movable

conducting parts?

1. _{induction instrument} 2. _{electrostatic instrument} 3. _{moving-magnet instrument} 4. _{D’Arsonval meter movement}

ANSWER: A

72._{A meter for its operation, it depends on a movable iron vane which}

aligns itself in the resultant field of a permanent magnet and an adjacent current carrying coil.

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1. _{induction instrument} 2. _{electrostatic instrument} 3. _{moving-magnet instrument}

4. _{permanent-magnet moving coil-instrument}

ANSWER: D

73._{What is the measuring instrument that uses the force of r epulsion}

between fixed and movable magnetized iron vanes, or the force

between a coil and a pivoted vane-shaped piece of soft iron to move the indicating pointer? 1. _pyrometer 2. _{vane-type instrument} 3. _{electrostatic instrument} 4. _{moving-magnet instrument} ANSWER: B

74._{It’s an electrostatic voltmeter in which an assembly of figure – 8 –}

shaped metal plates rotates between the plates of a stationary assembly when a voltage is applied between the assemblies. The

length of the arc of rotation is proportional to the electrostatic attraction and thus, to the applied voltage.

1. _varmeter 2. _variometer 3. _{potentiometer} 4. _{Kelvin voltmeter}

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75._{What is that instrument used for measuring the strength and direction of} magnetic fields? 1. _varmeter 2. _{potentiometer} 3. _magnetometer 4. _{Kelvin voltmeter} ANSWER: C

76._{What do you call of that instrument used for measuring reactive power}

in vars?

1. _varmeter 2. _pyrometer

3. _{reactive volt-ampere meter} 4. _{A or C is correct}

ANSWER: D

77._{What is this instrument or circuit that has four or more arms, by means}

of which one or more of the electrical constants of an unknown component may be measured?

1. _bridge

2. _{Hazeltine circuit} 3. _{Loftin – White circuit}

4. _{D’Arsonval meter movement}

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78._{A four-arm bridge. Al arms of which are predominantly resistive; used}

for measuring resistance.

1. _bridge

2. _{resistance bridge} 3. _{Wheatstone bridge} 4. _{B or C is correct}

ANSWER: D

79._{This is the method of using a Wheatstone bridge to determine the}

distance from the test point to a fault in a telephone or telegraph line or cable. 1. _Mesh 2. _{Varley loop} 3. _{Batten system} 4. _{Cordonnier system} ANSWER: B

80._{This refers to a four-arm ac bridge used for measuring inductance}

against a standard capacitance.

1. _{Maxwell bridge} 2. _{slide-wire bridge} 3. _{resistance bridge} 4. _{Wheatstone bridge}

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81._{Refers to an ac bridge for measuring the inductance and Q of an}

inductor in terms of resistance, frequency and a standard capacitance.

1. _{Hay bridge} 2. _{Maxwell bridge} 3. _{slide-wire bridge} 4. _{Wheatstone bridge}

ANSWER: A

82._{This is a special bridge for measuring very low resistance (0.1Ω or less).}

The arrangement of the bridge reduces the effects of contact resistance, which causes significant error when such low resistances are connected to conventional resistances bridges.

1. _{Hay bridge} 2. _{Maxwell bridge} 3. _{Wheatstone bridge} 4. _{Kelvin double bridge}

ANSWER: D

83._{A type of four-arm capacitance bridge in which the unknown}

capacitance is compared with a standard capacitance. This bridge is frequently employed in testing electrolytic capacitors, to which a dc polarizing voltage is applied during the measurement. What is this bridge?

1. _{Hay bridge} 2. _{Maxwell bridge} 3. _{Schering bridge}

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4. _{Wheatstone bridge}

ANSWER: C

84._{What do you call of that frequency-sensitive bridge in which two}

adjacent arms are resistances and the other two arms are RC combinations? 1. _{Hay bridge} 2. _{Wein bridge} 3. _{Maxwell bridge} 4. _{Schering bridge} ANSWER: B

85._{When the capacitors of a Wein bridge are replaced by inductors, the}

bridge becomes

1. _{Wein-bridge filter} 2. _variometer

3. _{Schering bridge}

4. _{Wein inductance bridge}

ANSWER: D

86._{A simplified version of the Wheatstone bridge wherein, two of the ratio}

arms are replaced by a 100 cm long Manganin of uniform cross-sections and provided with a slider.

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2. _{Schering bridge} 3. _{slide-wire bridge}

4. _{Wein inductance bridge}

ANSWER: C

87._{Bridge used to measure both inductive and capacitive impedances at}

higher frequencies. 1. _{Hay bridge} 2. _{Schering bridge} 3. _{Wein bridge} 4. _{radio-frequency bridge} ANSWER: D

88._{A bridge wherein all legs are electrically identical} 1. _{balance bridge}

2. _{balance circuit} 3. _{balance line} 4. _{all of the above}

ANSWER: A

89._{Comparison between dc and ac measuring instruments}

1. _{generally, ac instruments are less sensitive than dc instruments} 2. _{errors such as induced emfs, frequency variations, and}

harmonic-current components are only present in ac instruments

3. _{in ac instruments, higher value of current is needed than in dc}

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4. _{all of these are correct}

ANSWER: D

90._{What is an electronic instrument capable of showing on screen and}

maybe on print, relative spacing of transmitter carriers, their sidebands and harmonics? 1. _Counters 2. _{Spectrum analyzer} 3. _{Triggered oscilloscope} 4. _Multimeter ANSWER: B

91._{An instrument capable of displaying simultaneously the amplitude of}

signals having different frequencies.

1. _oscilloscope 2. _{spectrum analyzer} 3. _VTVM 4. _{Logic analyzer} ANSWER: B 92._{Spectrum analyzer is} 1. _{a real-time analyzer} 2. _{a non-real time analyzer}

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4. _{an instrument not dependent on frequency}

ANSWER: A

93._{Indications of spectrum analyzer is presented by means of} 1. _{a moving meter}

2. _{an iron vane} 3. _{a CRT}

4. _{a LED}

ANSWER: C

94._{An electronic measuring device that provide instantaneous visual}

indication of voltage excursions.

1. _voltmeter 2. _{power meter} 3. _oscilloscope

4. _{power line meter}

ANSWER: C

95._{An instrument that is capable of displaying waveforms by means of}

fluorescence in a CRT.

1. _oscilloscope 2. _{wave analyzer} 3. _{spectrum analyzer} 4. _{distortion analyzer}

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ANSWER: A

96._{Types of oscilloscopes that are able retain the display for a longer}

period for analysis. The display is retained by the use of flood gun.

1. _{sampling oscilloscope}

2. _{digital storage oscilloscope} 3. _{storage oscilloscope}

4. _{delayed sweep oscilloscope}

ANSWER: C

97._{What do call an oscilloscope that uses sampling technique in}

processing signals having frequencies beyond its normal capabilities?

1. _{sampling oscilloscope}

2. _{digital storage oscilloscope} 3. _{storage oscilloscope}

4. _{delayed sweep oscilloscope}

ANSWER: A

98._{Generally, oscilloscope uses what type of deflection?} 1. _{magnetic deflection}

2. _{electromagnetic deflection} 3. _{static deflection}

4. _{electrostatic deflection}

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99._{A device or instrument, which delivers signals of pre3cise frequency and}

amplitude, usually over a wide range.

1. _synthesizer

2. _{frequency generators} 3. _{signal generators} 4. _modulators

ANSWER: C

100. _{The two most common audio oscillators are} 1. _{Wein bridge and Colpitts}

2. _{Wein bridge and phase-shift} 3. _{Colpitts and Hartley}

4. _{Hartley and phase-shift}

ANSWER: B

101. _{What are the two most popular RF oscillators} 1. _{Wein bridge and Colpitts}

2. _{Wein bridge and phase-shift} 3. _{Colpitts and Hartley}

4. _{Hartley and phase-shift}

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102. _{A device or instrument able to generate noise with accurate}

voltage for test purposes.

1. _{signal generator} 2. _synthesizer

3. _{frequency generator} 4. _{noise generator}

ANSWER: D

103. _{When do you need a noise generator?} 1. _{When starting an oscillators}

2. _{When evaluating noise performance of an oscillator} 3. _{When evaluating noise characteristics of an amplifier} 4. _{When performing modulation analysis}

ANSWER: C

104. _{In RF or microwave system, what instrument is used to measure}

the incidental and reflected signals.

1. _oscilloscope 2. _{reflectometer}

3. _{incident-wave meter} 4. _{spectrum analyzer}

ANSWER: B

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1. _photodiode 2. _{reflectometer}

3. _{incident-wave meter} 4. _LED

ANSWER: B

106. _{A tunable RF instrument, which, by means of a sharp dip of an}

indicating meter, indicates resonance with an external circuit under test.

1. _{reflectometer} 2. _inclinometer 3. _{dip meter}

4. _{Grid-dip meter}

ANSWER: C

107. _{A type of dip meter employing a vacuum tube oscillator, whose}

indicating dc microammeter is in the grid circuit.

1. _{reflectometer} 2. _inclinometer 3. _{dip meter}

4. _{Grid-dip meter}

ANSWER: D

108. _{In meter movement, how do you prevent the meter from}

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1. _{by shorting} 2. _{by coupling} 3. _{by swamping} 4. _{by damping}

ANSWER: D

109. _{When the meter is insufficiently damped, it is considered as} 1. _underdamped

2. _overdamped 3. _{critically damped} 4. _{negatively damped}

ANSWER: A

110. _{A meter when _______ damped will become insensitive to small}

signals. 1. _underdamped 2. _overdamped 3. _{critically damped} 4. _{negatively damped} ANSWER: B

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