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Measurement and Instrumentation

Measurement and Instrumentation
In which of the transformer is the secondary nearly short circuited under normal operating condition?

 Distribution transformer.
 PT.
 Power transformer.
 CT.

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Measurement and Instrumentation
Wagner earthing device is used to eliminate errors due to

Electrostatic coupling
Both A and B
Electromagnetic coupling
None of these

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Measurement and Instrumentation
The main advantage of Anderson bridge over Maxwell bridge is that

 balance equation independent of frequency.
 attaining balance condition is easier.
 measures high Q inductors.
  reduction of the cost.

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Measurement and Instrumentation
Electrostatic instruments are normally used for

High current measurements
High voltage measurements
Low voltage measurements
Low current measurements

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Measurement and Instrumentation
Magnetic deflection is inversely proportional to

 (Voltage)2.
 Voltage.
 (Voltage)1.5.
 (Voltage)-0.5.

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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

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

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MORE MCQ ON Measurement and Instrumentation

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