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Measurement and Instrumentation

Measurement and Instrumentation
Dynamic errors are caused by

 instrument not responding fast
 environmental error
 observational error
 human error

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Measurement and Instrumentation
A megger is usually

Moving coil type instrument
Moving iron type instrument
Electro-static type instrument
Hot-wire type instrument

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Measurement and Instrumentation
A CRO probe has an impedance of 500 kΩ in parallel with a capacitance of 10 pF. The probe is used to measure the voltage between P and Q as shown in figure. The measured voltage will be

 3.53 V.
 5 V.
 4.38 V.
 4.54 V.

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

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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

 5.2%
 25.2%
 10.2%
 1.2%

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

Full-scale value
Measured value
Mean value
Rms value

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MORE MCQ ON Measurement and Instrumentation

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