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Measurement and Instrumentation

Measurement and Instrumentation
A moving iron instrument can be used for

AC only
DC only
Both DC& AC
None of the listed here

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Measurement and Instrumentation
The spring material used in a spring control device should have the following property.

Should have low specific resistance
Should non magnetic
All of the listed here
Most be of low temperature co-efficient

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

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

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Measurement and Instrumentation
If the instrument is to have a wide range, the instrument should have

Logarithmic scale
Square-law scale
Exponential scale
Linear scale

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Measurement and Instrumentation
The maximum percentage error in the sum of two voltage measurements when V1 = 100V ± 1% and V2 = 80V ± 5% is

 ± 2.8%
 ± 3%
 ± 4%
 ± 6%

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Measurement and Instrumentation
Which of the following instruments can be used to measure AC current only?

Moving iron voltmeter
Permanent Magnet Type ammeter
Induction type ammeter
Moving iron ammeter

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MORE MCQ ON Measurement and Instrumentation

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