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Measurement and Instrumentation

Measurement and Instrumentation
For handling greater currents induction watt-meters are used in conjunction with

Either of the above
Power transformers
Potential transformers
Current transformers

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

None of the listed here
Parallel
Series-parallel
Series

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Measurement and Instrumentation
A permanent magnet moving coil ammeter is connected in 50 Hz a. c. Circuit in which 5A current is flowing. The meter will read

2.5 A
0 A
5 A
None of the listed here

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Measurement and Instrumentation
Wagner earthing device is used to eliminate errors due to

None of these
Electromagnetic coupling
Both A and B
Electrostatic coupling

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Measurement and Instrumentation
In figure Z1 = 200∠60° ohm. Z2 = 400∠-90° ohm, Z3 = 300∠0° ohm. Then Z4 for bridge to be balanced is

 300∠90° ohm.
 150∠30° ohm.
 400∠-90° ohm.
 600∠-150° ohm.

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Measurement and Instrumentation
In a moving iron meter, the deflecting torque is proportional to

Square of the current through the coil
Current through the coil
Squareroot of the measurand
Sine of the measurand

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MORE MCQ ON Measurement and Instrumentation

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