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Measurement and Instrumentation

Measurement and Instrumentation
Which of the following essential featuresis possessed by an indicating instrument?

Damping device
All of the listed here
Controlling device
Deflecting device

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Measurement and Instrumentation
In a wheatstone bridge, a change of 6 Ω in the unknown arm of bridge is required to produce a change in deflection of 2.4 mm of the galvanometer. The sensitivity is

 2.5 mm/Ω
 0.4 mm/Ω
 0.8 mm/Ω
 5.0 mm/Ω

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

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

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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

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

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Measurement and Instrumentation
The meter constant of an energy meter is 1500 rev/kWh, the disc makes 3000 revolution in a given time. The energy consumed is

4 kWh
1 kWh
2 kWh
3 kWh

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