Power Electronics Spread time is defined as the interval during which 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. anode current rises from 10 % to 90 % of its final value. both (A) and (B). ANSWER DOWNLOAD EXAMIANS APP
Power Electronics After peak point, the UJT operates in the ___________ region. None of these Cut-off Negative resistance Saturation None of these Cut-off Negative resistance Saturation ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Power electronics essentially deals with control of a.c. power at ___________. 50 Hz frequency Frequencies above 20 kHz Frequencies less than 10 Hz Frequencies above 1000 kHz 50 Hz frequency Frequencies above 20 kHz Frequencies less than 10 Hz Frequencies above 1000 kHz ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Compared to transistor, ______________ have lower on state conduction losses and higher power handling capability TRIACs. Semi conductor diodes. MOSFETs. Thyristor. TRIACs. Semi conductor diodes. MOSFETs. Thyristor. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The turn-on time of an SCR with inductive load is 20 µs. The puls train frequency is 2.5 KHz with a mark/space ratio of 1/10, then SCR will Turn on. Not turn on. Turn on if inductance is removed. Turn on if pulse frequency us increased to two times. Turn on. Not turn on. Turn on if inductance is removed. Turn on if pulse frequency us increased to two times. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A thyristor will be triggered when Vg = 1.5 volt and Ig = 100 mA in the given figure. Calculate the value of R in ohm is 37.14. 60. 65. 3.714. 37.14. 60. 65. 3.714. ANSWER DOWNLOAD EXAMIANS APP
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