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Electric Circuits

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

 0.75V, 5/6 Ohm
 0.75 V, 1.5 Ohm
 1.5V, 5/6 Ohm
 1.5V, 1.5 Ohm

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Electric Circuits
An alternating voltage = 140 sinθ is supplied to a device which offers a resistance of 20 Ω in forward direction of current in reverse direction. Calculate the form factor.

 0.57.
 0.318.
 1.11.
 1.414.

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Electric Circuits
In 2 port network Z12 = Z21 indicates which property

 linear.
 non linear.
 unilateral.
 bilateral.

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Electric Circuits
Consider the following circuit. What is the value of current I in the 5 Ω resistor in the circuit given in the figure?

 0 A.
 3 A.
 2 A.
 4 A.

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Electric Circuits
KVL works on the principle of

 law of conservation of energy.
 both.
None of these
 law of conservation of charge.

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Electric Circuits
The capacitive reactance of an electric circuit is 50 Ohms. The frequency of supply becomes doubled. What is the new capacitive reactance?

 200 Ohms.
 100 Ohms.
 50 Ohms.
 25 Ohms.

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