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Electric Circuits

Electric Circuits
For occurrence of resonance which of the following elements are required?

 Both 2 and 3
 C
 L
 R

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Electric Circuits
Two wires of A and B of the same material and length ‘l’ and ‘2l’ have radius ‘r’ and ‘2r’ respectively. The ratio of their specific resistance will be

 1:2.
 4:1.
 1:8.
 1:1.

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Electric Circuits
The resistivity of the conductor depends on

 length of the conductor.
 area of the conductor.
 type of material.
 none of these.

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Electric Circuits
Reactive power drawn by a pure resistor is

 0
 maximum
None of these
 minimum

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Electric Circuits
If N is the number of nodes and b is the number of branches in a network, then rank of cut set matrix is

 b - N + 1.
 N.
 N - 1.
 b - N - 1.

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Electric Circuits
The value of unity impulse function at time (t) = 0 is

 infinite.
 0.
 1.
 indeterminate.

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