Power Electronics Which of the following is disadvantage of fast recovery diodes? Recovery is only 5 µs. None of these. Doping is carried out. Recovery is only 50 µs. Recovery is only 5 µs. None of these. Doping is carried out. Recovery is only 50 µs. 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 6, 4. 7, 5. 4, 6. 5, 7. 6, 4. 7, 5. 4, 6. 5, 7. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Dynamic equalising circuit is useful to limit di / dt of SCR. for voltage equalisation. to limit dV / dt of SCR. both B and C. to limit di / dt of SCR. for voltage equalisation. to limit dV / dt of SCR. both B and C. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A triac is equivalent to two SCRs ___________. In parallel In inverse-parallel None of these In series In parallel In inverse-parallel None of these In series ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A triac is a ___________ switch Bidirectional None of these Mechanical Unidirectional Bidirectional None of these Mechanical Unidirectional ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Power transistor are type of MOSFETs. BJTs. IGBTs. All of above. MOSFETs. BJTs. IGBTs. All of above. ANSWER DOWNLOAD EXAMIANS APP
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