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Measurement and Instrumentation

Measurement and Instrumentation
A dynamometer wattmeter can be used for

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

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Measurement and Instrumentation
When a potentiometer is used for measurement of voltage of an unknown source, the power consumed in the circuit of the unknown source under null condition is

 very high.
 ideally zero.
 high.
 small.

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Measurement and Instrumentation
A megger is usually

Electro-static type instrument
Moving coil type instrument
Hot-wire type instrument
Moving iron type instrument

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Measurement and Instrumentation
A wheatstone bridge cannot be used for precision measurements because errors are introduced into on account of

 Contact resistance.
 Thermoelectric emfs.
 All of above.
 Resistance of connecting leads.

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Measurement and Instrumentation
In a ballistic galvanometer, the deflecting torque is proportional to

Square-root of current through coil
Square of current through coil
The current through coil
Sine of measured

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Measurement and Instrumentation
The use of __________________ instruments is merely confined within laboratories as standardizing instrument.

 indicating.
  absolute.
 integrating.
 recording.

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MORE MCQ ON Measurement and Instrumentation

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