Power Electronics The typical time of rising time lies between 10 - 20 µs. 40 - 60 µs. 90 - 100 µs. 1 - 4 µs. 10 - 20 µs. 40 - 60 µs. 90 - 100 µs. 1 - 4 µs. 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 Transistor SCR UJT None of these Transistor SCR UJT None of these ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A single phase one pulse controlled circuit has a resistance R and counter emf E load 400 sin(314 t) as the source voltage. For a load counter emf of 200 V, the range of firing angle control is 30° to 180°. 60° to 180°. 60° to 120°. 30° to 150°. 30° to 180°. 60° to 180°. 60° to 120°. 30° to 150°. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The triac is ___________. None of these A four-terminal device Like a bidirectional SCR Not a thyristor None of these A four-terminal device Like a bidirectional SCR Not a thyristor ANSWER DOWNLOAD EXAMIANS APP
Power Electronics To meet high current demand we use SCRs in both B and C. parallel connection. anti parallel connection. series connection. both B and C. parallel connection. anti parallel connection. series connection. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What is used to protect the SCR from over current ? CB and fuse. Snubber circuit. Heat sink. Voltage clamping device. CB and fuse. Snubber circuit. Heat sink. Voltage clamping device. ANSWER DOWNLOAD EXAMIANS APP
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