Power Electronics When the emitter terminal of a UJT is open, the resistance between the base terminal is generally ___________. Extremely low Low High None of these Extremely low Low High None of these ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Gate circuit or triggering circuit of a thyristor is high power circuit. lower power circuit. magnetic circuit. may be low power or high power circuit. high power circuit. lower power circuit. magnetic circuit. may be low power or high power circuit. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What is used to protect the SCR from over current ? Voltage clamping device. Heat sink. CB and fuse. Snubber circuit. Voltage clamping device. Heat sink. CB and fuse. Snubber circuit. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which triggering is the most reliable? Forward voltage triggering. Thermal triggering. dV / dt triggering. Gate triggering. Forward voltage triggering. Thermal triggering. dV / dt triggering. Gate triggering. 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 150°. 30° to 180°. 60° to 120°. 60° to 180°. 30° to 150°. 30° to 180°. 60° to 120°. 60° to 180°. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The maximum di/dt in a SCR is Both A and B. Directly proportional to supply voltage. Inversely proportional to supply voltage. Directly proportional to inductance in the circuit. Both A and B. Directly proportional to supply voltage. Inversely proportional to supply voltage. Directly proportional to inductance in the circuit. ANSWER DOWNLOAD EXAMIANS APP
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