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Measurement and Instrumentation

Measurement and Instrumentation
The range of a moving iron ac ammeter is extended by

Changing number of turns of operating coil
A shunt
None of the listed here
A multiplier

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

Damping device
Deflecting device
Controlling device
All of the listed here

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Measurement and Instrumentation
Which instrument has identical calibration for ac as well as dc values?

Induction type
Hot wire type
Moving iron type
Moving coil type

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Measurement and Instrumentation
A null type instrument as compared to a deflected type instrument has

All of these
 a faster response.
 a higher accuracy.
 a lower sensitivity.

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Measurement and Instrumentation
A dynamometer wattmeter can be used for

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

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Measurement and Instrumentation
A CRO probe has an impedance of 500 kΩ in parallel with a capacitance of 10 pF. The probe is used to measure the voltage between P and Q as shown in figure. The measured voltage will be

 5 V.
 3.53 V.
 4.54 V.
 4.38 V.

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