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Measurement and Instrumentation

Measurement and Instrumentation
An induction wattmeter can be used for

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

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Measurement and Instrumentation
The form factor in AC is the ratio of

Peak value to rms value
Peak value to average value
Rms value to peak value
Rms value to average value

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Measurement and Instrumentation
To increase Q factor of a coil, the wire should be

 thin.
 long.
 thick.
 long and thin.

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

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Measurement and Instrumentation
A DC A-h meter is rated for 15 A, 250 V. The meter constant is 14.4 A-sec/rev. The meter constant at rated voltage may be expressed as

 1000 rev/KWh.
 3750 rev/KWh.
 3600 rev/KWh.
 960 rev/KWh.

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Measurement and Instrumentation
Relative error is same as

 absolute error.
 true error.
None of these
 ratio of absolute error and true value.

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MORE MCQ ON Measurement and Instrumentation

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