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Electric Circuits

Electric Circuits
Condition of reciprocity in Y-parameter representation is

 Y11 = Y22.
 Y12 = Y22.
 Y11 = Y12.
 Y12 = Y21.

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Electric Circuits
Given network is having N nodes and B branches, then number of twigs are

 B - N - 1.
 B - N + 1.
 N.
 N - 1.

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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
In series RLC circuit what is the power factor just bellow the resonance frequency?

 Unity
 Leading
 Zero
 Lagging

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Electric Circuits
For finding the Z11 parameter at the input port of a two port network

 output port is short circuited.
 input port is open circuited.
 input port is short circuited.
 output port is open circuited.

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Electric Circuits
While Thevenizing a circuit between two terminals, VTH is equal to

 open circuit terminal voltage .
 net voltage available in the circuit.
 none of these.
 short circuit terminal voltage.

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