Materials used in heat sink should have_____________?
A. High thermal conductivity
B. Large surface area
C. High melting point
D. all of these
IGBT combines the advantages of_____________?
A. Bjts and sits
B. Bjts and mosfets
C. Sits and mosfets
D. None of these
What happen due to high di / dt____________?
A. Breakdown of junction
B. local hot spot
C. Insulation failure
D. None of these
What may happen high dV / dt____________?
A. Unwanted turn on
B. Breakdown of j2 junction
C. both a and b
D. Anyone of these
Why resistor is used in Snubber circuit_________________ ?
A. To minimize the loss
B. To minimize the charging current
C. to minimize the discharging current
D. All of these
Snubber circuit is used with SCR_________________?
A. In series
B. In parallel
C. Either series or parallel
D. Anti parallel