Which of following is normally ON device?
Which of following is normally ON device?
A. SIT
B. BJT
C. TRIAC
D. IGBT
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Harmonics in 3 phase inverters can be reduced by using___________?
Harmonics in 3 phase inverters can be reduced by using___________?A. Passive filter
B. Active filter
C. Both passive and active filters
D. None of theseDIAC are specifically designed to trigger______________?
DIAC are specifically designed to trigger______________?A. TRIAC
B. SCR
C. GTO
D. Only (a) and (b)A string of n parallel SCRs is operated at 72 KA, the rating of each SCR is 1 KA. If derating factor of the string is 0.1. value of n will be___________?
A string of n parallel SCRs is operated at 72 KA, the rating of each SCR is 1 KA. If derating factor of the string is 0.1. value of n will be___________?A. 60
B. 70
C. 80
D. 90Compared to transistor, _________ have lower on state conduction losses and higher power handling capability?
Compared to transistor, _________ have lower on state conduction losses and higher power handling capability?A. TRIACs
B. Semi conductor diodes
C. MOSFETs
D. ThyristorWhich of the following is used in heat sink_____________?
Which of the following is used in heat sink_____________?A. Iron
B. Aluminium
C. Carbon
D SilverIf a shunt motor is started with its field winding open then?
If a shunt motor is started with its field winding open then?A. It will rotate at the same speed as that with its field winding closed
B. It will rotate at less speed as that with its field winding closed
C. It will rotate at dangerously high speed
D. None of these