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Measurement and Instrumentation

Measurement and Instrumentation
The error of an instrument is normally given as a percentage of

Rms value
Mean value
Measured value
Full-scale value

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Measurement and Instrumentation
0-150 V voltmeter has an accuracy of 1% of full-scale reading. The voltage measured by the instrument is 75 V. The limiting error is

 4%
 3%
 1%
 2%

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Measurement and Instrumentation
It is found that 10A current passes through a resistor of 10°hms. The resistor has 5% tolerance . The error in measurement of current can be as high as 5%. What is max error in measurement of power, calculated from measured value of I and the nominal value of resistor?

50W
100W
150W
200W

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Measurement and Instrumentation
The two pressure coils of a single phase power factor meter have

The same dimension but different number of turns
The same dimensions and the same number of turns
None of these
The same number of turns but different dimensions

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Measurement and Instrumentation
The effect of stray magnetic fields on the actuating torque of a portable instrument is maximum when the operating field of the instrument and stray fields are

 perpendicular.
 inclined at 60o.
 parallel.
 inclined at 30o.

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Measurement and Instrumentation
When testing a coil having a resistance of 10 ohms, resonance occurred when the oscillator frequency was 10 MHz and rotating capacitor was set at 500/2π pF. The effective value of the Q of the coil is

 25.4.
 54.2.
 31.4.
 20.

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MORE MCQ ON Measurement and Instrumentation

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