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Electric Circuits

Electric Circuits
The efficiency in case of maximum power transfer theorem is

 50 %.
 50 % - 100 %.
 100 %.
 less than 50 %.

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Electric Circuits
The value of unity impulse function at time (t) = 0 is

 indeterminate.
 1.
 infinite.
 0.

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Electric Circuits
A balanced three Phase Y-connected load has one phase voltage VB = 277∠45o V. The phase sequence is RYB. The line to line voltage VRY is

 339∠- 45o V.
 480∠ - 45o V.
 480∠45o V.
 339∠45o V.

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Electric Circuits
In ac RC series circuit total voltage is 10V and voltage across resistor is 6V, then what is voltage across capacitor?

 8V
 16V
 4V
 10V

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Electric Circuits
The maximum value of a current wave is 2A. If the form factor of a current wave is 1.5 and the peak factor is 2.7, find the rms value in Amperes.

 1.414 A.
 0.494 A.
 1.57 A.
 0.741 A.

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Electric Circuits
A motor having a power factor of 0.8 absorbs in active power of 1200 W the reactive power drawn from the supply is _________ VA.

 400
 250
 130
 900

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MORE MCQ ON Electric Circuits

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