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Electric Circuits

Electric Circuits
In RLC parallel circuit to get Q>1 which of the following is required?

All of these
 XL
 XL=R
 XL>R

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Electric Circuits
When AC flows through a pure capacitance then the current

 lags the emf by 90o.
 leads the emf by 90o.
 is in phase with emf.
 leads the emf by - 90o.

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Electric Circuits
An electric field can deflect

 neutrons.
 gamma-rays.
 alpha particles.
 x-rays.

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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?

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

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Electric Circuits
There is a ________ between two nodes of signal flow graph

None of these
 link
 branch
 tree

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Electric Circuits
Find the Z parameters of the circuit shown in figure.

 Z11 = 1; Z12 = 1; Z21 = 1; Z22 = 1
 Z11 = 3; Z12 = 3; Z21 = 3; Z22 = 3
 Z11 = 2; Z12 = 1; Z21 = 1; Z22 = 2
 Z11 = 3; Z12 = 1; Z21 = 1; Z22 = 3

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