What is the dependence of frequency on the balance equation?

A)
varies by a factor of 2
B)
independent
C)
depends on the detector used
D)
depends on the supply magnitude

Correct Answer : Option (B) :   independent

Explanation : In a high voltage Schering bridge, the balance equation does not depend on the frequency of operation of the circuit. A detector is only used for detecting the balance condition in a bridge circuit.

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

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