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Measurement and Instrumentation

Measurement and Instrumentation
The scale of a rectifier instrument is

Either linear or non linear
Linear
None of the listed here
Non-linear

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Measurement and Instrumentation
The meter constant of a single phase 240 V induction watthour meter is 400 revolutions per KWh. The speed of the meter disc for a current of 10 Amperes of 0.8 p.f lagging will be

 21.1 rpm.
 18.2 rpm.
 16.02 rpm.
  12.8 rpm.

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Measurement and Instrumentation
Swamping resistance is used to compensate

 both A and B.
 error due to strong magnetic field.
 error due to temperature true variations.
 none of these.

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Measurement and Instrumentation
Which of the following cannot be measured by multimeters?

Current
Resistance
Frequency
Voltage

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Measurement and Instrumentation
Deflection method direct measurements are most widely used as these are

 most simple and least time consuming.
 least time consuming.
 most simple.
 most accurate.

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Measurement and Instrumentation
A Lissajous pattern on an oscilloscope has 5 horinzontal tangencies and 2 vertical tangencies. The frequency of horizontal input is 100 Hz. The frequency of the vertical will be

 400 Hz.
 250 Hz.
 500 Hz.
 625 Hz.

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MORE MCQ ON Measurement and Instrumentation

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