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Measurement and Instrumentation

Measurement and Instrumentation
PMMC Instrument can be used for

DC work only
None of the listed here
AC work only
Both AC and DC

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Measurement and Instrumentation
Figure show an RC potentiometer to measure AC voltage. It is desire that Vo/Vi should be independent of frequency. The value of C shoud be

 0.09 µF.
 11 µF.
 10 µF.
 0.1 µF.

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

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

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Measurement and Instrumentation
When using ohmmeter, applied voltage is to be disconnected from the circuit because

Voltage source will increase resistance
The ohmmeter has its own internal battery
None of these
Current will decrease resistance

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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

 0.25 A.
 0.50 A.
 0.67 A.
 0.70 A.

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Measurement and Instrumentation
The errors mainly caused by human mistakes are

 systematic error.
 observational error.
 instrumental error.
  gross error.

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MORE MCQ ON Measurement and Instrumentation

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