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Measurement and Instrumentation

Measurement and Instrumentation
Symmetric errors are

Observational errors
All of the listed here
Instrument errors
Environment errors

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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

 2%
 4%
 3%
 1%

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Measurement and Instrumentation
A PMMC instrument can be used as flux meter

By eliminating the control springs
By making control springs of large moment of inertia
By using a high series resistance
By using a low resistance shunt

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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
Jewels are used in instruments for the purpose of

Bearing
Torque control
Damping
Suppressing noise

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Measurement and Instrumentation
What is the approximate input impedance of a CRO?

 0
 10 MΩ
 100 MΩ
 1 MΩ

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MORE MCQ ON Measurement and Instrumentation

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