Measurement and Instrumentation - Interview Questions | Exam2Win

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31. Which of the following devices should be used for accurate measurement of low D.C. voltage ?

A. Small range moving coil voltmeter

B. D.C. potentiometer

C. Small range thermocouple voltmeter

D. None of the above

Explanation:

32. The adjustment of position of shading bands, in an energy meter is done to provide

A. friction compensation

B. creep compensation

C. braking torque

D. none of the above

Explanation:

33. The electrical power to a meggar is provided by

A. battery

B. permanent magnet D.C. generator

C. AC. generator

D. any of the above

Explanation:

34. In a portable instrument, the controlling torque is provided by

A. spring

B. gravity

C. eddy currents

D. all of the above

Explanation:

35. A voltage of about 200 V can be measured

A. directly by a D.C. potentiometer

B. a D.C. potentiometer in conjunction with a volt ratio box

C. a D.C. potentiometer in conjunction with a known resistance

D. none of the above

Explanation: