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Electric Circuits

Electric Circuits
In RC series circuit R = 2Ω, C = 2μF and 10V dc is applied. Then what is the value of current?

 10A
 0A
 5A
 2A

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Electric Circuits
An electrical motor has rating of 10 MVA at 0.8 lag, represented as series RL circuit at a 50 MVA base. Find the impedance value?

 (2 + j4) pu
 (3 + j4) pu
 (4 + j3) pu
 (4 + j2 ) pu

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Electric Circuits
A positive and a negative charged conductor are initially 50 mm apart. When they are moved close together so that they are now only 10 mm apart, the force between them will be

 5 times greater than before.
 5 times smaller than before.
 10 times greater than before.
 25 times larger than before.

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Electric Circuits
To obtain wide bandwidth, network is designed with which of the following?

 Unity Q factor
 Zero Q factor
 High Q factor
 Low Q factor

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Electric Circuits
A wire 2.5 m long is bent into a square. An current of 100 A flowing through the wire will produce a magnetizing force at the center of the square, equal to

 144 AT / m.
 196 AT / m.
 72 AT / m.
 222 AT / m.

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Electric Circuits
To obtain high efficiency, network is designed with which of the following?

 High Q factor
 Zero Q factor
 Low Q factor
 Unity Q factor

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