Measurement And Instrumentation MCQ Questions & Answers

1

Which of the following instruments will be used to measure the temperature above 1600°C

A) A simple thermometer B) Electrical resistance pyrometer C) Thermo-electric pyrometer D) None of the above

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Answer & Solution

Answer: Option C

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2

Which one of the following is composed of two characteristics: conformity and the number of significant figures to which a measurement may be made?

A) Sensitivity B) Resolution C) Accuracy D) Precision

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Answer & Solution

Answer: Option D

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3

In a Q-meter, the value of shunt resistance connected across the oscillator is typically of the order of

A) Ω B) mΩ C) µΩ D) kΩ

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Answer & Solution

Answer: Option B

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4

Torque/weight ratio of an instrument indicates

A) selectivity B) accuracy C) sensitivity D) fidelity

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Answer & Solution

Answer: Option C

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5

A disc mounted on the shaft of a machine has 12 pattern points. The number of flashes projected on the disc by a stroboscope is 6000 in a minute. When the disc appears stationary and it has single image of 12 points, the speed of the machine will be

A) 5 rps B) 50 rpm C) 500 rpm D) 50 rps

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Answer & Solution

Answer: Option C

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6

The number of turns of wire needed to provide a potentiometer with a resolution of 0.05% is:

A) 200 B) 2000 C) 500 D) 5000

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Answer & Solution

Answer: Option B

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7

A peak-responding ac voltmeter employing a half-wave precision rectifier has been calibrated to give a reading of 1 V for 1 V rms sinusoidal input. For 1 V dc input, the meter reading will be

A) 0.707 V B) 0.707 V or 0 V C) 1.414 V D) 1.414 V or 0 V

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Answer & Solution

Answer: Option A

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8

The energy meter installed near the main switch in a residence and other locations is

A) Indicating or deflecting type instrument B) Integrating type instrument C) Recording type instrument D) Absolute instrument

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Answer & Solution

Answer: Option B

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9

In a piezoelectric crystal oscillator, if x represent the mass of the crystal, then the oscillation or tuning frequency is linearly proportional to

A) the mass of the crystal B) the square root of the mass of the crystal C) the square of the mass of the crystal D) the inverse of the square root of the mass of the crystal

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Answer & Solution

Answer: Option D

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10

A wattmeter will read zero under the following condition

A) The voltage and current are exactly in phase B) The voltage and current have the same time periods but the voltage is sinusoidal whereas the current is a square wave C) the voltage frequency is twice the current frequency D) The current is dc and the voltage is sinusoidal

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Answer & Solution

Answer: Option D

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Measurement And Instrumentation MCQ Questions & Answers | ECE