Power Electronics A modern power semiconductor device that combines the characteristic of BJT and MOSFET is MCT. GTO. IGBT. FCT. MCT. GTO. IGBT. FCT. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A triac is a ___________ switch Unidirectional Mechanical None of these Bidirectional Unidirectional Mechanical None of these Bidirectional ANSWER DOWNLOAD EXAMIANS APP
Power Electronics When a UJT is turned ON, the resistance between emitter terminal and lower base terminal ___________ Remains the same Is decreased None of these Is increased Remains the same Is decreased None of these Is increased 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. 1500 A. 6000 A. 2121.32 A. 4242.64 A. 1500 A. 6000 A. 2121.32 A. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics To meet high current demand we use SCRs in both B and C. anti parallel connection. series connection. parallel connection. both B and C. anti parallel connection. series connection. parallel connection. 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. 4, 6. 7, 5. 5, 7. 6, 4. 4, 6. 7, 5. 5, 7. ANSWER DOWNLOAD EXAMIANS APP
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