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Electric Circuits

Electric Circuits
A two port network is defined by the relation The value of Z11 is

 2/11.
 -2/11.
 -3.
 2.

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Electric Circuits
If emf in a given circuit is given by e = 100 sinω0t, then maximum value of voltage and frequency will be

 100 V, 100 Hz.
 50√2 V, 100 Hz.
 100 V, 50 Hz.
 100√2 V, 100 Hz.

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Electric Circuits
Inductor does not allow the sudden change of

 current
 power
 voltage
None of these

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Electric Circuits
Types of rotating machines

 synchronous machine.
 IM.
 transformer.
 both B and C.

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Electric Circuits
Three identical inductors are connected in delta with a 220 V, 50 Hz, 3 - φ, supply. If the phase current is 24 A, then what is the value of each of the inductance?

 None of these.
 0.058 H.
 0.049 H.
 0.029.

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Electric Circuits
Two equal resistors R connected in series across a voltage source V dissipate power P. What would be the power dissipated in the same resistors when they are connected in parallel across the same voltage source?

 16P.
  P.
 2P.
 4P.

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