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Measurement and Instrumentation

Measurement and Instrumentation
The core flux in the CT of above question no.6, under the given operating conditions is

 225 mWb.
 450 mWb.
 0.
 1000 mWb.

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Measurement and Instrumentation
Which of the following instruments can be used to measure AC current only?

Moving iron voltmeter
Permanent Magnet Type ammeter
Moving iron ammeter
Induction type ammeter

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Measurement and Instrumentation
_______ instruments are those which measure the total quantity of the electricity delivered in a particular time.

Absolute
Recording
Indicating
Integrating

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Measurement and Instrumentation
PMMC type instruments normally use

Eddy current damping
None of these
Air friction damping
Fluid friction damping

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Measurement and Instrumentation
Piezoelectric effect is carried out in

  constant k prototype.
  m derived.
  composite filter.
  crystal filter.

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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

2 kWh
4 kWh
1 kWh
3 kWh

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