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Electric Circuits

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.
 b - N + 1.
 N - 1.
 N.

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Electric Circuits
Two resistor are said to be connected in parallel when

 both ‘b’ and ‘c’
 both have the same potential difference.
 both carry the same value of current.
 total current equals the sum of branch currents.

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Electric Circuits
The form factor of sinusoidal alternating current is

 0.
 1.
 1.11.
 1.15.

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Electric Circuits
In RLC parallel circuit current through resistor, inductor and capacitor are 10A, 5A and 5A respectively. What is the total current in the circuit?

 5A
 10A
 20A
 0A

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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.
 1.11.
 1.414.
 0.318.

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Electric Circuits
Under resonance condition the power factor of a system is

 unity
 leading
 any of the above
 lagging

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