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Measurement and Instrumentation

Measurement and Instrumentation
Which of the following meter is most suitable for measuring radio frequency currents?

  Thermocouple meter.
 Moving - iron meter.
 VTVM.
 Moving - coil meter.

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Measurement and Instrumentation
In a moving iron meter, the deflecting torque is proportional to

Current through the coil
Squareroot of the measurand
Square of the current through the coil
Sine of the measurand

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Measurement and Instrumentation
Resolution of an instrument is

 the maximum non linearity.
 the maximum quantity it can measure.
 ability to distinguish polarity.
 the minimum quantity it can measure.

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Measurement and Instrumentation
An average reading digital multimeter reads 10 V when fed a triangular wave, symmetric about the axis. For the same input, an rms reading meter will read

 10.
 20.
  10√3.
 20√3.

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Measurement and Instrumentation
In a moving coil instrument, the deflecting torque is proportional to

Squareroot of the current
Square of the current
Sine of the measurand
Current

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Measurement and Instrumentation
0-150 V voltmeter has an accuracy of 1% of full-scale reading. The voltage measured by the instrument is 75 V. The limiting error is

 2%
 4%
 1%
 3%

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MORE MCQ ON Measurement and Instrumentation

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