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Measurement and Instrumentation

Measurement and Instrumentation
The resistance can be measured most accurately by

Multimeter
Megger
Bridge method
Voltmeter-ammeter method

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Measurement and Instrumentation
The current ‘I’ through a resistance R is measures with the following uncertainties I = 4 A ± 0.5%, R = 100Ω±0.2%. If power is computed from these two measured quantities, the uncertainty in the power computed will be

 0.5%
 1.2%
 1.5%
 1%

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Measurement and Instrumentation
Magnetic deflection is inversely proportional to

 Voltage.
 (Voltage)1.5.
 (Voltage)2.
 (Voltage)-0.5.

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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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Measurement and Instrumentation
What is the unit of plane angle?

 Candela
 Radian
 Degree
 Steradian

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Measurement and Instrumentation
A wattmeter reads 30.34 W. The absolute error in the measurement is - 2.22 W. What is the true value of power?

None of these
 32.56 W .
 25.45 W.
 28.12 W.

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MORE MCQ ON Measurement and Instrumentation

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