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Measurement and Instrumentation

Measurement and Instrumentation
No eddy current and hysteresis losses occur in

Moving iron instruments
Electrostatic instruments
PMMC instruments
Electrodynamo meter instruments

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Measurement and Instrumentation
The pointer of an indicating instrument is generally made of _______

Aluminium
Copper
Silver
Soft steel

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Measurement and Instrumentation
Ryall crest voltmeter is used for measurement of

High AC voltage
Low frequency voltage
High DC voltage
AC voltage of any form

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Measurement and Instrumentation
The two pressure coils of a single phase power factor meter have

The same number of turns but different dimensions
The same dimension but different number of turns
The same dimensions and the same number of turns
None of these

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Measurement and Instrumentation
The core flux in the CT of above question no.6, under the given operating conditions is

 450 mWb.
 1000 mWb.
 0.
 225 mWb.

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Measurement and Instrumentation
The thermocouple instruments do not have

Independence of ambient temperature
Absence of frequency error
High sensitivity
High degree of measuring accuracy

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MORE MCQ ON Measurement and Instrumentation

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