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Measurement and Instrumentation

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

Air friction
Fluid friction
Eaddy current
None of the listed here

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Measurement and Instrumentation
The meter constant of a single phase 240 V induction watthour meter is 400 revolutions per KWh. The speed of the meter disc for a current of 10 Amperes of 0.8 p.f lagging will be

 18.2 rpm.
  12.8 rpm.
 16.02 rpm.
 21.1 rpm.

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Measurement and Instrumentation
A moving coil permanent magnet instrument can be used as ______ by using a low resistance shunt.

Flux meter
Voltmeter
Ballastic galvanometer
Ammeter

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Measurement and Instrumentation
In an Anderson bridge, the unknown inductance is measured in terms of

Known inductance and resistance
Known inductance
Known capacitance and resistance
Known resistance

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Measurement and Instrumentation
The multiplier and the meter coil in a voltmeter are in

Parallel
Series-parallel
Series
None of the listed here

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

 Gross errors
 Systematic errors
 Environmental errors
 Random errors

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