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Measurement and Instrumentation

Measurement and Instrumentation
Dynamic errors are caused by

 instrument not responding fast
 environmental error
 human error
 observational error

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Measurement and Instrumentation
To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken

From a source which is not the same as the unknown voltage
From a battery
Any of the above
From the same source as the unknown voltage

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Measurement and Instrumentation
PMMC Instrument can be used for

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

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Measurement and Instrumentation
The resistance of a circuit is found by measuring current flowing and the power fed into the circuit. If the limiting errors in the measurement of power and current are ± 1.5% and ± 1.0% respectively, the limiting error in the measurement of resistance

 ± 1.5%
 ± 3.5%
 ± 1%
 ± 2.5%

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Measurement and Instrumentation
Instrument transformers are

Pottential transformers
Current transformers
Both current and potential transformers
Power transformers

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Measurement and Instrumentation
A voltmeter using thermocouple measures

  rms value.
 Peak value.
 Peak to peak value.
 Average value.

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MORE MCQ ON Measurement and Instrumentation

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