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Q#1 Power Semiconductor Devices GATE EE 2010 MCQ +2 marks -0.66 marks

The L-C circuit shown in the figure has an impedance L = I mH and a capacitance C = 10uF.

53.jpg 

The LC circuit shown in the figure has an inductance  and capacitance . The LC circuit is used to commutate a thyristor, which is initially carrying a current of 5A as shown in the figure below. The values and initial of  and  are same as in previous question. The switch is closed ae . If the forward drop is negligible, the time taken for the device to turn off is

 

54.jpg 

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