Power Electronics Spread time is defined as the interval during which anode current rises from 10 % to 90 % of its final value. both (A) and (B). anode voltage drops from 10 % of its initial value to zero. anode current rises from 90 % to its final value. anode current rises from 10 % to 90 % of its final value. both (A) and (B). anode voltage drops from 10 % of its initial value to zero. anode current rises from 90 % to its final value. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Materials used in heat sink should have high thermal conductivity. high melting point. large surface area. All of these. high thermal conductivity. high melting point. large surface area. All of these. 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. Voltage clamping device. Snubber circuit. Fast acting current limiting device (FACL fuse). CB. Voltage clamping device. Snubber circuit. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The typical time of rising time lies between 1 - 4 µs. 40 - 60 µs. 90 - 100 µs. 10 - 20 µs. 1 - 4 µs. 40 - 60 µs. 90 - 100 µs. 10 - 20 µs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics For an SCR gate cathode characteristic is a straight line of 130. For triggered source volume of 15 V and allowable gate power dissipation of 0.5 W compute the gate source resistance? 111.9 ohm 108 ohm 11.19 ohm 115 ohm 111.9 ohm 108 ohm 11.19 ohm 115 ohm ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The normal way to turn on a diac is by ___________. None of these Gate current Gate voltage Breakover voltage None of these Gate current Gate voltage Breakover voltage ANSWER DOWNLOAD EXAMIANS APP
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