A. Figure 4.118 is a ______ commutation circuit.
(a) class A
(b) class B
(c) class C
(d) class D
B. Match List I and List II and select the correct answer
(a) A-1, B-2, C-3, D-4 (b) A-1, B-2, C-4, D-3
(c) A -3, B-4, C-1, D-2 (d) A-3, B-4, C-2, D-1
C. Match List I and List II and select the correct answer
(a) A-2, B-4, C-1, D-3 (b) A-1, B-2, C-4, D-3 (c) A-3, B-4, C-1, D-2 (d) A-3, B-4, C-2, D-1
D. In a commutation circuit of a thyristor, for satisfactory turn of thyristor the following condition must be satisfied:
(a) circuit time constant is less than device turn-OFF time.
(b) circuit time constant is greater than device turn-OFF time.
(c) circuit time constant is equal or less than device turn-OFF time.
(d) circuit time constant is equal to device turn-OFF time.