Power Electronics Materials used in heat sink should have high melting point. large surface area. high thermal conductivity. All of these. high melting point. large surface area. high thermal conductivity. All 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. 2121.32 A. 1500 A. 6000 A. 4242.64 A. 2121.32 A. 1500 A. 6000 A. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What may happen high dV / dt? Anyone of these. Breakdown of J2 junction. Unwanted turn ON. Both A and B. Anyone of these. Breakdown of J2 junction. Unwanted turn ON. Both A and B. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which of following is normally ON device BJT. TRIAC. SIT. IGBT. BJT. TRIAC. SIT. IGBT. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A 200 A thyristor is to be operated in parallel with a 300 A thyristor. The ON state voltage drops are 1.5 V and 1.2 Volts. What is the value of resistance R to be connected in series with each thyristor, so that current through the combination is 500 A and each of them is fully loaded ? 0.3 ohm 0.3 ohm 0.03 ohm 3.0 ohm 0.3 ohm 0.3 ohm 0.03 ohm 3.0 ohm ANSWER DOWNLOAD EXAMIANS APP
Power Electronics 60 thyrsistors are connected in series and parallel to form a 10 KV and 5.5 KA switch. Each thyristor is rated for 1.2 KV, 1 KA. The no. of parallel path are 6. The efficiency of the switch is 76.3 %. 83.3 %. 90.9 %. 91.6 %. 76.3 %. 83.3 %. 90.9 %. 91.6 %. ANSWER DOWNLOAD EXAMIANS APP
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