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Measurement and Instrumentation

Measurement and Instrumentation
A moving coil permanent magnet instrument can be used as ______ by using a low resistance shunt.

Ballastic galvanometer
Voltmeter
Ammeter
Flux meter

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Measurement and Instrumentation
A moving coil ammeter has a uniform scale with 50 division and gives a full scale reading 10 A. The instrument can read up to (1/5)th of a scale division with a fair degree of certainty. What is the resolution of the instrument in mA?

 80 mA.
 25 mA.
  40 mA.
 50 mA.

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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

 250 Hz.
 400 Hz.
 625 Hz.
 500 Hz.

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Measurement and Instrumentation
The chemical effect of current is used in

C. ammeter
C. energy meter
C. ammeter hour meter
None of these

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Measurement and Instrumentation
An current of is measured with a thermocouple, 5 A full scale meter. What is the meter reading?

 5 A.
  3 A.
 2+3√2 A.
 2 A.

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Measurement and Instrumentation
The form factor in AC is the ratio of

Peak value to rms value
Rms value to peak value
Peak value to average value
Rms value to average value

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