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Measurement and Instrumentation

Measurement and Instrumentation
For a circuit given that I = 2 ± 5 % A, R = 100 ± 0.2 % Ω the limiting error in the power dissipation I2 R in the resistor R is

 1.2%
 5.2%
 10.2%
 25.2%

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Measurement and Instrumentation
The pointer of an indicating instrument should be

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

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Measurement and Instrumentation
A sampling wattmeter is used to measure the average power of a load. The peak to peak voltage of a square wave is 10 V and the current is triangular wave of 5 Amp P-P as shown in the figure. The period is 20 ms. The reading in W will be

 50 W.
  0 W.
 25 W.
 100 W.

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Measurement and Instrumentation
The effect of load resistance is important in measurement of

 resistance of shunt.
 both A and B.
 resistance of shunt winding.
 resistance of ammeter.

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Measurement and Instrumentation
A mulliammeter can be used as

Voltmeter and ammeter
Ohmmeter
Wattmeter
Frequency meter

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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

 260 V.
 250 V.
 252 V.
 248 V.

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MORE MCQ ON Measurement and Instrumentation

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