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Measurement and Instrumentation

Measurement and Instrumentation
A moving iron ammeter may be compensated for frequency errors by

Shunt capacitance
A series inductance
Series resistance
A shunt resistance

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Measurement and Instrumentation
The rectifier instrument is not free from

All of the listed here
Wave shape error
Frequency error
Temperature error

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Measurement and Instrumentation
The disc of an instrument using eddy current damping should be of

Conducting and magnetic material
Conducting and non magnetic material
Non conducting and magnetic material
None of the listed here

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Measurement and Instrumentation
______ instruments are most sensitive.

Moving iron
Dynamometer
Hot wire
Permanent magnet moving coil

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Measurement and Instrumentation
Which instrument has identical calibration for ac as well as dc values?

Induction type
Moving coil type
Moving iron type
Hot wire type

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Measurement and Instrumentation
A moving iron ammeter produces a full scale torque of 240 μNm with a deflection of 120° at a current of 10 A. The rate of change of self induction (μH/radian) of the instrument at full scale is

 12.0 μH/radian.
 4.8 μH/radian.
 2.0 μH/radian.
 114.6 μH/radian.

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