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Measurement and Instrumentation

Measurement and Instrumentation
PMMC Instrument can be used for

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

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

Current transformers
Potential transformers
Either of the above
Power transformers

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Measurement and Instrumentation
A wheatstone bridge cannot be used for precision measurements because errors are introduced into on account of

 All of above.
 Contact resistance.
 Thermoelectric emfs.
 Resistance of connecting leads.

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Measurement and Instrumentation
To measure ac as well as dc power, we use

Sometimes induction and sometimes dynamometer wattmeter
Dynamometer wattmeter
None of the listed here
Induction wattmeter

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Measurement and Instrumentation
Resolution of an instrument is

 ability to distinguish polarity.
 the maximum non linearity.
 the minimum quantity it can measure.
 the maximum quantity it can measure.

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

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

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MORE MCQ ON Measurement and Instrumentation

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