To avoid creep in an energy meter - Measurements and Instrumentation

Electronics and Communication Engineering (ECE) : Measurements and Instrumentation - Quiz(MCQ)

To avoid creep in an energy meter

the potential coil is made of very thin wire

two shading bands are put on series magnet

two shading bands are put on shunt magnet

two holes are cut in the disc on opposite sides of spindle

Correct Answer : Option (D) : two holes are cut in the disc on opposite sides of spindle

Explanation : When a hole comes under a pole of upper electromagnet the disc becomes stationary. Thus creep is avoided.

Recently Updated in Measurements and Instrumentation Questions

In measurements using strain gauge, the dummy strain gauge is used to

compensate for error in voltmeter

compensate for change in temperature

compensate for resistance of strain gauge

compensate for error due to change in voltage of battery

Correct Answer : compensate for change in temperature

A CT is used to feed current coils of wattmeter, energy meter, power factor meter and an ammeter. Then

all coils are in parallel

the coils are in series-parallel

all the coils are in series

None of the above

Correct Answer : all the coils are in series

A permanent magnet moving coil measures

dc value

peak value

true rms value

rms plus dc value

Correct Answer : dc value