A. String efficient
B. Reliability factor
C. Factor of safety
D. Derating factor
By which one of the following we can measure the reliability of a string_____________? Read More »
Power Electronics A. holes only
B. electrons only
C. either electron or holes
D. Both electron and holes
Anode current in an SCR consists of____________? Read More »
Power Electronics A. series connection.
B. parallel connection.
C. anti parallel connection.
D. both B and C.
To meet high current demand we use SCRs in______________? Read More »
Power Electronics A. To limit di / dt of SCR
B. To limit dV / dt of SCR
C. For voltage equalisation
D. Both B and C
Dynamic equalising circuit is useful____________? Read More »
Power Electronics A. high current demand
B. low voltage demand
C. low current demand
D. high voltage demand
SCRs are used in series to meet_______________? Read More »
Power Electronics A. BJT
B. Power dioed
C. MOSFET
D. None of above
Which following is a two terminal three layer device? Read More »
Power Electronics A. 0 – 0.5 V.
B. 0.5 – 1 V.
C. 1 – 1.5 V.
D. 1.5 – 2 V.
ON state voltage drop across SCR lie between the range_____________? Read More »
Power Electronics A. IGBTs
B. COOLMOS
C. TRIAC
D. SITS
Which of following is not a power transistor? Read More »
Power Electronics A. Reverse recovery time ( trr ) > gate recovery time (tgr)
B. Device turn OFF time ( tq ) > reverse recover time (trr)
C. Circuit turn OFF time > device turn OFF time ( tq )
D. All of these
Which statement is true ? Read More »
Power Electronics A. SIT
B. BJT
C. TRIAC
D. IGBT
Which of following is normally ON device? Read More »
Power Electronics