Power Electronics Thyristor can be protected from over voltages by using snubber circuit. fuse. voltage clamping device. heat sink. snubber circuit. fuse. voltage clamping device. heat sink. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The V-I characteristics for a triac in the first and third quadrants are essentially identical to those of ___________ in its first quadrant None of these SCR UJT Transistor None of these SCR UJT Transistor ANSWER DOWNLOAD EXAMIANS APP
Power Electronics When a UJT is turned ON, the resistance between emitter terminal and lower base terminal ___________ Is decreased Is increased None of these Remains the same Is decreased Is increased None of these Remains the same 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. 5, 7. 4, 6. 6, 4. 7, 5. 5, 7. 4, 6. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics SCRs are used in series to meet low voltage demand. low current demand. high current demand. high voltage demand. low voltage demand. low current demand. high current demand. high voltage demand. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Compared to transistor, ______________ have lower on state conduction losses and higher power handling capability MOSFETs. Semi conductor diodes. Thyristor. TRIACs. MOSFETs. Semi conductor diodes. Thyristor. TRIACs. ANSWER DOWNLOAD EXAMIANS APP
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