Power Electronics The UJT may be used as ___________. A sawtooth generator Am amplifier None of these A rectifier A sawtooth generator Am amplifier None of these A rectifier ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A thyristor string is made of a no. of SCR connected in series and parallel. The string have volume and current of 11 KV and 4 KA. The voltage and current rating of available SCRs are 1800 V and 1000 A. For a string efficiency of 90 % let the number of SCRs in series and parallel are a and b respectively. Then the value of a and b will be 4, 6. 7, 5. 5, 7. 6, 4. 4, 6. 7, 5. 5, 7. 6, 4. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What may happen high dV / dt? Both A and B. Breakdown of J2 junction. Unwanted turn ON. Anyone of these. Both A and B. Breakdown of J2 junction. Unwanted turn ON. Anyone of these. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics An SCR has half cycle surge current rating of 3000 A for 50 Hz supply. One cycle surge current will be 4242.64 A. 6000 A. 2121.32 A. 1500 A. 4242.64 A. 6000 A. 2121.32 A. 1500 A. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics 4 thyristors rated 200 V in series. The operating voltage of the string is 0.600 V. Derating factor of the string is 0.25. 0.75. 0.7. 0.2. 0.25. 0.75. 0.7. 0.2. 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? 108 ohm 111.9 ohm 115 ohm 11.19 ohm 108 ohm 111.9 ohm 115 ohm 11.19 ohm ANSWER DOWNLOAD EXAMIANS APP
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