Category: Power Electronics

A. To minimize the loss
B. To minimize the charging current
C. To minimize the discharging current
D. All of these

A. delay time
B. rise time
C. spread time
D. all

A. SIT
B. BJT
C. TRIAC
D. IGBT

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

A. equal division of voltage across each thyristor
B. equal division of current through each thyristor in parallel
C. equal division of voltage across each thyristor in parallel
D. equal division of current through each thyristor in series

A. 60
B. 70
C. 80
D. 90

A. Positive
B. Negative
C. Zero
D. None of these

A. Two SCR’s in parallel opposition
B. Two SCR’s in series
C. Three SCR’s in series
D. Four SCR’s in series

A. Identical to line voltage in a VSI
B. Identical to line current in VSI
C. Identical to phase voltage in VSI
D. Identical to phase voltage in CSI

A. Single phase
B. 3 phase
C. Poly phase
D. Only (b) and (c)