What may happen high dV / dt____________?
A. Unwanted turn ON
B. Breakdown of J2 junction
C. Both A and B
D. Anyone of these
Power Electronics
Thermal voltage VT can be given by____________?
Thermal voltage VT can be given by____________?
A. Kq/T
B. KT/q
C. qT/K
D. (K2/q)(T + 1/T – 1)
What happen due to high di / dt____________?
What happen due to high di / dt____________?
A. Breakdown of junction
B. Local hot spot
C. Insulation failure
D. None of these
IGBT combines the advantages of_____________?
IGBT combines the advantages of_____________?
A. BJTs and SITs
B. BJTs and MOSFETs
C. SITs and MOSFETs
D. None of these
Which of the following is used in SCR to protect from high dV / dt__________________?
Which of the following is used in SCR to protect from high dV / dt__________________?
A. Snubber circuit
B. Fuse
C. Equalizing circuit
D. Circuit breaker
COOLMOS device can be used in application up to power range of___________?
COOLMOS device can be used in application up to power range of___________?
A. 1 KVA
B. 2 KVA
C. 500 VA
D. 100 KVA
What is used to protect a thyristor from high di / dt conditions__________?
What is used to protect a thyristor from high di / dt conditions__________?
A. Fuse.
B. Snubber circuit
C. Inductor
D. Voltage clamg device
Compared 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. Thyristor
Materials used in heat sink should have_____________?
Materials used in heat sink should have_____________?
A. high thermal conductivity
B. large surface area
C. high melting point
D. All of these
A thyristor can termed as__________?
A thyristor can termed as__________?
A. AC switch
B. DC switch
C. Both a and B
D. Square wave switch