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Measurement and Instrumentation

Measurement and Instrumentation
An Ohmmeter is a

Moving coil instrument
None of the listed here
Moving iron instrument
Dynamometer instrument

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Measurement and Instrumentation
One single phase wattmeter operating on 230V and 5A for 5 hours makes 1940 revolutions. Meter constant in revolutions is 400. What is the power factor of the land?

1
0.65
0.73
0.84

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Measurement and Instrumentation
How many fundamental units are there ?

 4
 8
 7
 6

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Measurement and Instrumentation
Standardization of potentiometer is done in order that, they become

 accurate.
 accurate and precise.
 precise.
 accurate and direct reading.

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Measurement and Instrumentation
The inductance of a certain moving iron ammeter is expressed as L = 2+5θ-θ2 µH. The control spring torque is 2 × 10-6 Nm/radian. Find the deflection in radians for a current of 2A.

 5
 2
 4
 1

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Measurement and Instrumentation
Which of the following essential featuresis possessed by an indicating instrument?

All of the listed here
Controlling device
Deflecting device
Damping device

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