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Measurement and Instrumentation

Measurement and Instrumentation
Commonly used instruments in power system measurement are

Induction
Rectifier
Electrostatic
Moving coil or iron

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Measurement and Instrumentation
The resistance in the circuit of the moving coil of a dynamometer wattmeter should be

None of the listed here
Almost zero
Low
High

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Measurement and Instrumentation
In a CRO which of following is not a part of electron gun?

 Grid
 Accelerating anode
  X-Y plates
 Cathode

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Measurement and Instrumentation
The power factor of a single phase load can be calculated if the instruments available are

Any of the listed here
One voltmeter, one ammeter and one wattmeter
One ammeter, one voltmeter and one energy meter
One voltmeter and one ammeter

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Measurement and Instrumentation
Most sensitive galvanometer is

Duddle galvanometer
Elastic galvanometer
Vibration galvanometer
Spot ballastic galvanometer

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Measurement and Instrumentation
The total current I = I1 + I2 in a circuit is measured as I1 = 150 ± 1A , I2 = 250 ± 2A, where the limits of error are as standard deviations. I is measured as

 (400 ± 1) A
 (400 ± 1.5) A
 (400 ± 3) A
 (400 ± 2.24) A

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MORE MCQ ON Measurement and Instrumentation

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