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Measurement and Instrumentation

Measurement and Instrumentation
For measurement of mutual inductance we can use

Any of the listed here
Anderson bridge
Maxwell's bridge
Heavyside bridge

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Measurement and Instrumentation
A moving coil of a meter has 100 turns, and a length and depth of 10 mm and 20 mm respectively. It is postioned in a uniform radial flux density of 200 mT. The coil carries a current of 50 mA. The torque on the coil is

  200 Nm.
 2 Nm.
 1 Nm.
 100 Nm.

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Measurement and Instrumentation
A wattmeter reads 30.34 W. The absolute error in the measurement is - 2.22 W. What is the true value of power?

 28.12 W.
 25.45 W.
None of these
 32.56 W .

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Measurement and Instrumentation
If an inductance is connected in one arm of the bridge and resistance is the remaining three arms

None of the listed here
The bridge can be balanced if the resistance have some specific values
The bridge cannot be balanced
The bridge can always be balanced

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Measurement and Instrumentation
A DC A-h meter is rated for 15 A, 250 V. The meter constant is 14.4 A-sec/rev. The meter constant at rated voltage may be expressed as

 960 rev/KWh.
 3600 rev/KWh.
 1000 rev/KWh.
 3750 rev/KWh.

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

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

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MORE MCQ ON Measurement and Instrumentation

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