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Measurement and Instrumentation

Measurement and Instrumentation
In a moving coil instrument, the deflecting torque is proportional to

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

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Measurement and Instrumentation
The limiting errors of measurement of power consumed by and the current passing through a resistance are ±1.5% and ±1% respectively. What is the limiting error ( in %) of measurement of resistance ?

 ± 2.5%
 ± 1.5%
 ±3.5%
 ± 1%

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Measurement and Instrumentation
Which of the following quantities consists of S.I. unit as Hertz?

 Power
 Frequency
 Force
 Charge

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

Either of the above
Current transformers
Power transformers
Potential transformers

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Measurement and Instrumentation
The internal resistance of a milli-ammeter must be very low for

 high accuracy.
 minimum effect on the current in the circuit.
 high precision.
 high sensitivity.

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Measurement and Instrumentation
Standardization of potentiometer is done in order that, they become

 precise.
 accurate and precise.
 accurate.
 accurate and direct reading.

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MORE MCQ ON Measurement and Instrumentation

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