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Measurement and Instrumentation

Measurement and Instrumentation
A dynamometer wattmeter can be used for

AC only
DC only
Any of the listed here
Both DC and AC

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

Low
None of the listed here
Almost zero
High

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Measurement and Instrumentation
The total current I = I1 + I2 in a circuit is measured I1 = 150 ± 3A , I2 = 250 ± 4 A, where the limits of error are given as standard deviations. I is measured as

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

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Measurement and Instrumentation
To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken

Any of the above
From the same source as the unknown voltage
From a battery
From a source which is not the same as the unknown voltage

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Measurement and Instrumentation
A multirange instrument has

Multicoil arrangement
Variable turns of coil
Multirange meters inside the measurement system
Multiple shunt or series resistance inside the meter

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Measurement and Instrumentation
Commonly used instruments in power system measurement are

Moving coil or iron
Electrostatic
Rectifier
Induction

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MORE MCQ ON Measurement and Instrumentation

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