Power Electronics A triac is equivalent to two SCRs ___________. None of these In parallel In inverse-parallel In series None of these In parallel In inverse-parallel In series ANSWER DOWNLOAD EXAMIANS APP
Power Electronics To turn on UJT, the forward bias on the emitter diode should be ___________ the peak point voltage. Equal to None of these More than Less than Equal to None of these More than Less than ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Spread time is defined as the interval during which anode current rises from 90 % to its final value. anode voltage drops from 10 % of its initial value to zero. anode current rises from 10 % to 90 % of its final value. both (A) and (B). anode current rises from 90 % to its final value. anode voltage drops from 10 % of its initial value to zero. anode current rises from 10 % to 90 % of its final value. both (A) and (B). ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A step up chopper has input voltage 110 V and output voltage 150 V. The value of duty cycle is 0.27. 0.32. 0.67. 0.45. 0.27. 0.32. 0.67. 0.45. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Let of a thyristor Vc1, Vc2, Vc3 are forward break over voltage for gate current Ig1, Ig2, Ig3 respectively. Then Vc1 = Vc2 = Vc3 any value of Ig. Vc1 > Vc2 > Vc3 when Ig1= Ig2 Vc1 > Vc2 > Vc3 when Ig1 > Ig2 > Ig3. Vc1 > Vc2 > Vc3 when Ig1 < Ig2 < Ig3. Vc1 = Vc2 = Vc3 any value of Ig. Vc1 > Vc2 > Vc3 when Ig1= Ig2 Vc1 > Vc2 > Vc3 when Ig1 > Ig2 > Ig3. Vc1 > Vc2 > Vc3 when Ig1 < Ig2 < Ig3. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Thyristor can be protected from over voltages by using fuse. voltage clamping device. heat sink. snubber circuit. fuse. voltage clamping device. heat sink. snubber circuit. ANSWER DOWNLOAD EXAMIANS APP
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