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Measurement and Instrumentation

Measurement and Instrumentation
Most sensitive galvanometer is

Spot ballastic galvanometer
Vibration galvanometer
Duddle galvanometer
Elastic galvanometer

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Measurement and Instrumentation
Instrument transformers are

Both current and potential transformers
Pottential transformers
Current transformers
Power transformers

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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

 20.
 31.4.
 54.2.
 25.4.

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Measurement and Instrumentation
The measured value of a resistance is 10.25 ohm, whereas its value of 10.22 ohm. What is absolute error of the measurement?

 10.26 ohm.
 0.01 ohm.
  0.03 ohm.
 15.36 ohm.

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Measurement and Instrumentation
A permanent magnet moving coil ammeter is connected in 50 Hz a. c. Circuit in which 5A current is flowing. The meter will read

2.5 A
None of the listed here
0 A
5 A

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Measurement and Instrumentation
The use of __________________ instruments is merely confined within laboratories as standardizing instrument.

 indicating.
 recording.
  absolute.
 integrating.

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