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Electric Circuits

Electric Circuits
A branch of a network is said to be passive when it contains

 voltage source.
 voltmeter.
 current source.
 battery.

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Electric Circuits
Current locus is obtained by which of the following?

 Either of these
 Varying source frequency
 Varying any one of the circuit element
None of these

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Electric Circuits
The inductive reactance of an electric circuit is 200 Ohms. The frequency of supply becomes doubled. What is the new capacitive reactance?

 200 Ohms.
 50 Ohms.
 100 Ohms.
 400 Ohms.

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Electric Circuits
The norton equivalent of the circuit shown in the figure is

 0.75 A, 1.5 Ohm
 1A, 5/6 Ohm
 0.75A, 5/6 Ohm
 1A, 1.5 Ohm

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

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Electric Circuits
Third pin of a 3 pin plug is thicker and longer

 for designing purpose.
 for protection purpose.
 all pins are of same size.
 none of these.

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MORE MCQ ON Electric Circuits

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