Measurement and Instrumentation

This is an MCQ-based quiz on Measurement and Instrumentation.

This includes Absolute, Indicating, Recording, and Integrating.

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The spring material used in a spring control device should have the following property.

Should be nonmagnetic Most be of low temperature coefficient Should have low specific resistance All of the above

Why is a MISC meter not recommended for DC measurement?

The meter is calibrated for AC and it’s error for DC would be high The meter does not respond to DC signals The error is high due to hysteresis effect The error is high due to eddy current effect

A moving iron ammeter may be compensated for frequency errors by

A shunt resistance A series inductance Shunt capacitance Series resistance

Which of the following meters has a linear scale?

Thermocouple meter Moving iron meter Hot wore meter Moving coil meter

Which of the following wave has the least form factor?

Sine wave Square wave Triangular wave Rectangular wave

Which of the following purpose jewels are used in instruments?

Damping Bearing Torque control None of the above

.............. can be used to measure AC current only.

Moving iron voltmeter Moving iron ammeter Induction type ammeter None of the above

The sensing wire is made of ........... in hot wire instrument.

Silver Copper Copper & Nickel Platinum & iridium

Which of the following is the main cause of magnetic decay in PMMC type instrument?

Quality of spring Aging of the spring Aging of the magnets None of the above

Which of the following determines light intensity in a CRT?

Current

Fluorescent screen

Voltage

Momentum of electrons

Which of the following compares the output in a successive approximation type DVM?

Comparator

Diode

Op amp

Rectifier

Which of the following is the main device used in the linear ramp technique?

Non-linear ramp

Linear ramp

Asymptotic ramp

Exponential ramp

When the moving coil in a Dynamometer type wattmeter deflects ________

Pointer doesn’t move

Current flows

Voltage is generated

Pointer moves

Which of the following determines the rate of measurement cycles?

Multivibrator

Oscillator

Oscilloscope

Amplifier

One single-phase wattmeter operating on 230V and 5A for 5 hours makes 1940 revolutions. Meter constant in revolutions is 400. What is the power factor of the load?

0.84

0.73

0.65

Quiz/Test Summary

Title: Measurement and Instrumentation

Questions: 15

Contributed by:

Diego Tue, May 24, 2022 07:08 AM UTC

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