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Measurement and Instrumentation

Measurement and Instrumentation
The errors introduced by an instrument fall in which category ?

 Systematic errors
 Environmental errors
 Gross errors
 Random errors

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Measurement and Instrumentation
Alternating current is measured by

Electrostatic ammeter
Permanent magnet type ammeter
Moving iron repulsion type voltmeter
Induction ammeter

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Measurement and Instrumentation
Systematic errors are

All of these
 observational errors.
 instrument errors.
 environmental errors.

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Measurement and Instrumentation
To increase Q factor of a coil, the wire should be

 thin.
 long and thin.
 thick.
 long.

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Measurement and Instrumentation
The smallest change in measured variable to which instrument will respond is

 precision.
 sensitivity.
  resolution.
 accuracy.

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Measurement and Instrumentation
______ instruments are most sensitive.

Permanent magnet moving coil
Hot wire
Dynamometer
Moving iron

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