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Measurement and Instrumentation

Measurement and Instrumentation
An induction wattmeter can be used for

Both DC and AC
Any of the listed here
Dc only
Ac only

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Measurement and Instrumentation
A meter has a full-scale deflection of 90o at a current of 1 A. The response of the meter is square law. Assuming spring control, the current for a deflection at 45o will be

 0.70 A.
 0.50 A.
 0.25 A.
 0.67 A.

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Measurement and Instrumentation
Instrument transformers are

Pottential transformers
Power transformers
Current transformers
Both current and potential transformers

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Measurement and Instrumentation
In a dynamometer wattmeter, the moving coil is the

None of the listed here
Current coil
Potential coil
Current coil and potential coil

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Measurement and Instrumentation
Dynamic errors are caused by

 environmental error
 instrument not responding fast
 observational error
 human error

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Measurement and Instrumentation
A sinusoidal signal waveform, when observed on an oscilloscope, has a peak to peak amplitude of 6 cm. If the vertical sensitivity setting is 5 v/cm, then rms value of the voltage will be

  10.6 V.
 12.6 V.
 15 V.
 11.1 V.

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MORE MCQ ON Measurement and Instrumentation

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