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Measurement and Instrumentation

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

 10 MΩ
 1 MΩ
 100 MΩ
 0

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Measurement and Instrumentation
A megger is usually

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

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Measurement and Instrumentation
To measure ac as well as dc power, we use

None of the listed here
Induction wattmeter
Sometimes induction and sometimes dynamometer wattmeter
Dynamometer wattmeter

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Measurement and Instrumentation
PMMC type instruments normally use

None of these
Air friction damping
Fluid friction damping
Eddy current damping

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Measurement and Instrumentation
In the bridge given in the figure, the reading of the high impedance voltmeter is

 6.66 V.
 - 3.33 V.
 4.20 V.
 Zero.

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Measurement and Instrumentation
The form factor in AC is the ratio of

Rms value to average value
Peak value to average value
Peak value to rms value
Rms value to peak value

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MORE MCQ ON Measurement and Instrumentation

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