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Measurement and Instrumentation

Measurement and Instrumentation
What is the expression for momentum?

 force × displacement
 mass × velocity
 change of velocity / time
 mass × acceleration

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Measurement and Instrumentation
The difference between the measured value and the true value is called

 probable error
 relative error
 gross error
 absolute error

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Measurement and Instrumentation
A dynamometer wattmeter can be used for

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

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Measurement and Instrumentation
The use of __________________ instruments is merely confined within laboratories as standardizing instrument.

 indicating.
  absolute.
 recording.
 integrating.

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Measurement and Instrumentation
Resistances can be measured with the help of

Wattmeters
Voltmeters
Ammeters
Ohmmeters and resistance bridges

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Measurement and Instrumentation
A 50 Hz bar primary CT has a secondary with 500 turns. The secondary supplies 5 A current into a purely resistive burden of 1Ω. The magnetizing ampere-turn is 200. The phase angle between the primary and secondary current is

 94.6o.
 175.4o.
 85.4o.
  4.6o.

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