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Measurement and Instrumentation

Measurement and Instrumentation
In induction type ammeter, _____ damping is provided.

Air friction
None of the listed here
Fluid friction
Eaddy current

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Measurement and Instrumentation
Which amplifier in used in an electronic amplifier?

 Wideband amplifier.
 Differential amplifier.
 Power amplifier.
 Butter amplifer.

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Measurement and Instrumentation
The expected value of the voltage across a resistor is 80 V, and the measured value is 79 V. What is the percentage error and relative accuracy of the measurement ?

 1.25% & 98.25%
 1.5% & 98.75%
 1.25% & 98.75%
 1.5% & 99%

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Measurement and Instrumentation
An electrodynamic meter can be used to measure

 DC voltage.
  both AC and DC voltage.
 AC volatge.
 DC current.

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Measurement and Instrumentation
The spring material used in a spring control device should have the following property.

Should non magnetic
All of the listed here
Most be of low temperature co-efficient
Should have low specific resistance

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Measurement and Instrumentation
The range of a moving iron ac ammeter is extended by

Changing number of turns of operating coil
A multiplier
A shunt
None of the listed here

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