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Measurement and Instrumentation

Measurement and Instrumentation
Which amplifier in used in an electronic amplifier?

 Butter amplifer.
 Wideband amplifier.
 Power amplifier.
 Differential amplifier.

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Measurement and Instrumentation
The pressure coil of a wattmeter should be connected on the supply side of the current coil when

Load impedance is low
Load impedance is high
None of these
Supply voltage is low

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Measurement and Instrumentation
When a capacitor was connected to the terminal of ohmmeter, the pointer indicated a low resistance initially and then slowly came to infinity position. This shows that capacitor is

Faulty
Short-circuited
All right
None of these

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Measurement and Instrumentation
A 150 V moving iron voltmeter of accuracy class 1-0 reads 75 V when used in a circuit under standard condition. The maximum possible percentage error in the reading is

 2.5%
 2%
 1%
 1.5%

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Measurement and Instrumentation
The core flux in the CT of above question no.6, under the given operating conditions is

 1000 mWb.
 0.
 225 mWb.
 450 mWb.

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Measurement and Instrumentation
Which of following is a vector quantity?

 Magnetic potential.
 Relative permeability.
 Magnetic field intensity.
 Flux density.

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