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Measurement and Instrumentation

Measurement and Instrumentation
A rectifier type instrument is connected to 100VDC and is operated in the DC measuring module reads

50V
111V
90V
100V

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Measurement and Instrumentation
The moving coil-meters, damping is provided by

 the coil spring attached to the moving.
 the aluminium frame of the coil.
 eddy current disk.
 damping vane in the airtight chamber.

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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

 250 V.
 260 V.
 248 V.
 252 V.

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Measurement and Instrumentation
Resistance of a VARISTOR varies with

 Voltage
 Current
 Temperature
 Both Voltage and Temperature

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

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Measurement and Instrumentation
The quantity 1/√(∈0 × μ0) in SI units has the

 both ‘a’ and ‘b’.
 dimension LT-1.
 none of these.
 speed of light.

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MORE MCQ ON Measurement and Instrumentation

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