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Measurement and Instrumentation

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

 0
 10 MΩ
 1 MΩ
 100 MΩ

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Measurement and Instrumentation
Which of the two have same dimensions?

None of these
 Force and stress
 Angular velocity and angular frequency
 Force and strain

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Measurement and Instrumentation
A power factor meter has

One current circuit and two pressure circuits
One current circuit and one pressure circuit
None of the listed here
Two current circuit and one pressure circuit

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Measurement and Instrumentation
In figure Z1 = 200∠60° ohm. Z2 = 400∠-90° ohm, Z3 = 300∠0° ohm. Then Z4 for bridge to be balanced is

 600∠-150° ohm.
 300∠90° ohm.
 150∠30° ohm.
 400∠-90° ohm.

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Measurement and Instrumentation
Swamping resistance is used to compensate

 error due to strong magnetic field.
 both A and B.
 error due to temperature true variations.
 none of these.

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

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

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MORE MCQ ON Measurement and Instrumentation

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