Power Electronics Materials used in heat sink should have All of these. large surface area. high thermal conductivity. high melting point. All of these. large surface area. high thermal conductivity. high melting point. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics During gate recovery time charge carriers of J3 junction is removed. charge carrier of J1 junction removed. charge carriers of J2 junction recombined. charge carriers of J2 junction is swept out. charge carriers of J3 junction is removed. charge carrier of J1 junction removed. charge carriers of J2 junction recombined. charge carriers of J2 junction is swept out. 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°. 60° to 120°. 30° to 180°. 60° to 180°. 30° to 150°. 60° to 120°. 30° to 180°. 60° to 180°. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics When a large surge current of very short duration flows through a thyristor then which one of the following device will operate to protect the thyristor ? Fast acting current limiting device (FACL fuse). CB. Snubber circuit. Voltage clamping device. Fast acting current limiting device (FACL fuse). CB. Snubber circuit. Voltage clamping device. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Under normal operating condition voltage clamping device offers impedance of zero value. low value. moderate value. high value. zero value. low value. moderate value. high value. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A triac is equivalent to two SCRs ___________. In parallel In inverse-parallel In series None of these In parallel In inverse-parallel In series None of these ANSWER DOWNLOAD EXAMIANS APP
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