Power Electronics Rise time is defined by the interval when anode voltage drops from 90 % to 10 % of its initial value. both B and C. anode current rises 10 % to 90 % of its final value. gate current rises from 90 % to 100 % of it final value. anode voltage drops from 90 % to 10 % of its initial value. both B and C. anode current rises 10 % to 90 % of its final value. gate current rises from 90 % to 100 % of it final value. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics How can we protect SCR from thermal conditions ? Using CB and fuse. Using equalizing circuit. Use of snubber circuit. Using heat sink. Using CB and fuse. Using equalizing circuit. Use of snubber circuit. Using heat sink. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What may happen high dV / dt? Unwanted turn ON. Anyone of these. Both A and B. Breakdown of J2 junction. Unwanted turn ON. Anyone of these. Both A and B. Breakdown of J2 junction. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A step up chopper has input voltage 110 V and output voltage 150 V. The value of duty cycle is 0.45. 0.67. 0.32. 0.27. 0.45. 0.67. 0.32. 0.27. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The triac is ___________. A four-terminal device None of these Not a thyristor Like a bidirectional SCR A four-terminal device None of these Not a thyristor Like a bidirectional SCR ANSWER DOWNLOAD EXAMIANS APP
Power Electronics For an SCR gate cathode characteristic is a straight line of 130. For triggered source volume of 15 V and allowable gate power dissipation of 0.5 W compute the gate source resistance? 111.9 ohm 11.19 ohm 108 ohm 115 ohm 111.9 ohm 11.19 ohm 108 ohm 115 ohm ANSWER DOWNLOAD EXAMIANS APP
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