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Statement for Linked Answer Questions:
The L-C circuit shown in the figure has an inductance L=1mH and a
capacitance C = 10μF .
[1] The initial current through the inductor is zero, while the initial capacitor voltage is 100 V. The switch is closed at t = 0. The current i through the circuit is: [2 marks]
(A) 5cos (5 ×103 t) A
(B) 5sin(104 t) A
(C) 10cos (5 ×103 t) A
(D) 10sin(104 t) A[2] The L-C circuit of previous question is used to commutate a thyristor, which is initially carrying a current of 5A as shown in the figure below. The values and initial conditions of L and C are the same as in previous question. The switch is closed at t = 0. If the forward drop is negligible, the time taken for the device to turn off is
[2 marks]
(A) 52μs
(B) 156μs
(C) 312μs
(D) 26μsasked in Electrical Engineering, 2010
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12.
Statement for Linked Answer Questions:
The following Karnaugh map represents a function F.
[1] A minimized form of the function F is [2 marks]
(A) F = X Y + YZ
(B) F = X Y + YZ
(C) F = X Y + YZ
(D) F = X Y + Y Z[2] Which of the following circuits is a realization of the above function F?
[2 marks]
asked in Electrical Engineering, 2010
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