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Measurement and Instrumentation

Measurement and Instrumentation
In a megger controlling torque is provided by

Coil
Eddy current
Gravity
Spring

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Measurement and Instrumentation
Piezoelectric effect is carried out in

  constant k prototype.
  composite filter.
  m derived.
  crystal filter.

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Measurement and Instrumentation
The circuit in figure is used to measure the power consumed by the load. The current coil and the voltage coil of the wattmeter have 0.02 Ω and 1000 Ω resistance respectively. The measured power compared to the load power will be

 0.4 more.
 0.2% more.
 0.2% less.
 0.4% less.

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Measurement and Instrumentation
A spring controlled indicating instrument has a deflection of 90deg for maximum current I. The corresponding deflection for a gravity controlled instrument is

90°
0°
30°
120°

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Measurement and Instrumentation
To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken

Any of the above
From a source which is not the same as the unknown voltage
From the same source as the unknown voltage
From a battery

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Measurement and Instrumentation
A dynamometer wattmeter can be used for

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

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MORE MCQ ON Measurement and Instrumentation

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