Power Electronics During which time maximum conduction spreading take place in the thyristor during turn ON? Rise time. Delay time. Spread time. Same for every case. Rise time. Delay time. Spread time. Same for every case. 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 5, 7. 4, 6. 7, 5. 6, 4. 5, 7. 4, 6. 7, 5. 6, 4. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Under normal operating condition voltage clamping device offers impedance of low value. moderate value. zero value. high value. low value. moderate value. zero value. high value. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which of the following is used in SCR to protect from high dV / dt? Fuse. Circuit breaker. Snubber circuit. Equalizing circuit. Fuse. Circuit breaker. Snubber circuit. Equalizing circuit. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Dynamic equalizing circuit is used for equal division of current through each thyristor in series. equal division of voltage across each thyristor in parallel. equal division of voltage across each thyristor. equal division of current through each thyristor in parallel. equal division of current through each thyristor in series. equal division of voltage across each thyristor in parallel. equal division of voltage across each thyristor. equal division of current through each thyristor in parallel. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Dynamic equalising circuit is useful to limit dV / dt of SCR. to limit di / dt of SCR. both B and C. for voltage equalisation. to limit dV / dt of SCR. to limit di / dt of SCR. both B and C. for voltage equalisation. ANSWER DOWNLOAD EXAMIANS APP
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