Power Electronics A triac is a ___________ switch Mechanical Bidirectional Unidirectional None of these Mechanical Bidirectional Unidirectional None of these ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Materials used in heat sink should have large surface area. All of these. high melting point. high thermal conductivity. large surface area. All of these. high melting point. high thermal conductivity. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The turn-on time of an SCR with inductive load is 20 µs. The puls train frequency is 2.5 KHz with a mark/space ratio of 1/10, then SCR will Not turn on. Turn on. Turn on if pulse frequency us increased to two times. Turn on if inductance is removed. Not turn on. Turn on. Turn on if pulse frequency us increased to two times. Turn on if inductance is removed. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Delay time is defined by the interval when anode voltage drops from 100 % to 90 % of its actual value. all of these. anode current reaches 10 % from forward leakage current. gate current increases from 90 % to 100 % of its final value. anode voltage drops from 100 % to 90 % of its actual value. all of these. anode current reaches 10 % from forward leakage current. gate current increases from 90 % to 100 % of its final value. 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 parallel connection. anti parallel connection. both B and C. series connection. parallel connection. anti parallel connection. both B and C. series connection. ANSWER DOWNLOAD EXAMIANS APP
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