Which of the following are needed both for protection and metering? - Measurements and Instrumentation

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

Which of the following are needed both for protection and metering?

A)

Wattmeters

B)

Energy meters

C)

Power factor meters

D)

Instrument transformers

Correct Answer : Option (D) : Instrument transformers

Explanation : Instrument transformers are used to measure high currents and voltages. They also feed the relays for protection.

Recently Updated in Measurements and Instrumentation Questions

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

A)

compensate for error in voltmeter

B)

compensate for change in temperature

C)

compensate for resistance of strain gauge

D)

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

A)

all coils are in parallel

B)

the coils are in series-parallel

C)

all the coils are in series

D)

None of the above

Correct Answer : all the coils are in series

A permanent magnet moving coil measures

A)

dc value

B)

peak value

C)

true rms value

D)

rms plus dc value

Correct Answer : dc value

ECE MCQ's

Power Electronics

Digital Electronics

Analog Electronics

Microprocessors

Radio Receivers

Signals and Systems

Satellite Communication

Communication Systems

Microwave Communication

Automatic Control Systems

Materials and Components

Advertisement