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Measurement and Instrumentation

Measurement and Instrumentation
The calibration of a voltmeter can be carried out by using

 A function generator.
  A potentiometer.
 An ammeter.
 A frequency meter.

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Measurement and Instrumentation
Which of the following instruments can be used to measure AC current only?

Moving iron ammeter
Permanent Magnet Type ammeter
Induction type ammeter
Moving iron voltmeter

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Measurement and Instrumentation
The pointer of an indicating instrument should be

None of the listed here
Either light or heavy
Very heavy
Very light

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Measurement and Instrumentation
What are the SI units of mass, length and time respectively?

 kg, cm and s.
 g, m and s.
 g, cm and s.
 kg, m and s.

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Measurement and Instrumentation
Which of the quantity consists of unit as newton-second?

 velocity
 Speed
 Impulse
 Acceleration

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Measurement and Instrumentation
When testing a coil having a resistance of 10 ohms, resonance occurred when the oscillator frequency was 10 MHz and rotating capacitor was set at 500/2π pF. The effective value of the Q of the coil is

 31.4.
 25.4.
 54.2.
 20.

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