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Electric Circuits

Electric Circuits
Time constant of RC series circuit is

 L/R
 RC
 2RC
 2L/R

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Electric Circuits
A 230V, 50Hz voltage is applied to a coil having L = 5H and R = 2 Ohm in series with capacitance C. When the voltage across the coil is 400V, find the current in the circuit?

 0.4583 A.
 0.1578 A.
 0.1465 A.
 0.2547 A.

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Electric Circuits
KVL works on the principle of

 law of conservation of energy.
None of these
 law of conservation of charge.
 both.

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Electric Circuits
For Norton’s equivalent circuit

 Isc = Voc / Req.
 Voc = Isc / Req.
 Isc = Voc Req.
 Voc = Req /Isc.

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Electric Circuits
An electrical circuit with 10 branches and 7 nodes will have

 7 loop equations.
  10 loop equations.
  4 loop equations.
 3 loop equations.

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Electric Circuits
The thevnin equivalent of the circuit shown in the figure is

 1.5V, 1.5 Ohm
 0.75V, 5/6 Ohm
 1.5V, 5/6 Ohm
 0.75 V, 1.5 Ohm

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