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Measurement and Instrumentation

Measurement and Instrumentation
For measuring a very high resistance we should use

Kelvin's double bridge
Wheat stone bridge
Megger
None of the listed here

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Measurement and Instrumentation
The smallest change in measured variable to which instrument will respond is

  resolution.
 accuracy.
 precision.
 sensitivity.

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Measurement and Instrumentation
A moving iron ammeter may be compensated for frequency errors by

Shunt capacitance
A shunt resistance
Series resistance
A series inductance

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Measurement and Instrumentation
Which of the quantity consists of unit as kg m/sec ?

 Speed
 Impulse
 Acceleration
 Momentum

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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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Measurement and Instrumentation
A single phase load is connected between R and Y terminals of a 415 V, symmetrical, 3-phase, 4 wire system with phase sequence RYB. A wattmeter is connected in the system as shown in figure. The power factor of the load is 0.8 lagging. The wattmeter will read

 + 597 W.
 - 795 W.
 + 795 W.
  - 597 W.

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