GATE EC 2017 Set 1 — Question 35
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Network Theory → Transient & AC Analysis → RL, RC & RLC Transients
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Question
In the circuit shown, the voltage is described by:where is in seconds. The source drives a series resistor followed by two inductors, H and H, connected in parallel; is the current through the H inductor. The time (in seconds) at which the current in the circuit will reach the value 2 Amperes is ________.
Correct answer
0.3 to 0.4
Solution
For all currents are zero, so both inductor currents start at 0.The parallel inductors act as H, so the source current isParallel inductors with zero initial current share the voltage , so the current divides in inverse proportion to inductance: the 2 H branch carries of the total.Setting A: s.Answer: s (accepted range 0.3 to 0.4)
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