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Measurement and Instrumentation
A DC potentiometer is the best means available for the measurement of DC voltage because
The precision in measurment is independent of the type of the defector used.
None of above.
It is possible to standardize before a measurement is undertaken.
It is based on null balance technique.
The precision in measurment is independent of the type of the defector used.
None of above.
It is possible to standardize before a measurement is undertaken.
It is based on null balance technique.
Answer
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Related Question
Measurement and Instrumentation
The coil of a moving iron instrument has a resistance of 500 ohm and inductance of 1 H. It reads 250 V when a 250 V DC is applied. It series resistance is 2000 ohms its reading when fed by 250 V, 50 Hz AC will be
248 V.
260 V.
252 V.
250 V.
248 V.
260 V.
252 V.
250 V.
Answer
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Measurement and Instrumentation
Figure show an RC potentiometer to measure AC voltage. It is desire that Vo/Vi should be independent of frequency. The value of C shoud be
10 µF.
11 µF.
0.1 µF.
0.09 µF.
10 µF.
11 µF.
0.1 µF.
0.09 µF.
Answer
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Measurement and Instrumentation
In two wattmeter method of power measurement if the total power is measured by one wattmeter only then power factor of the system is
1.
0.
0.5.
none of above.
1.
0.
0.5.
none of above.
Answer
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Measurement and Instrumentation
When a capacitor was connected to the terminal of ohmmeter, the pointer indicated a low resistance initially and then slowly came to infinity position. This shows that capacitor is
None of these
Short-circuited
Faulty
All right
None of these
Short-circuited
Faulty
All right
Answer
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Measurement and Instrumentation
For measuring an AC voltage by an AC potentiometer it is desirable that the supply for the potentiometer is taken from
Any of above.
A source other than the source of unknown voltage.
The same source as the unknown voltage.
A battery.
Any of above.
A source other than the source of unknown voltage.
The same source as the unknown voltage.
A battery.
Answer
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