Power Electronics (3140915) MCQs

MCQs of Power switching devices

Showing 51 to 54 out of 54 Questions
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51.
Gate characteristic of a thyristor
(a) is a straight line passing through the origin
(b) is of the type Vg = a + b lg
(c) is a curve between Vg and lg
(d) has a spread between two curves of Vg -Ig
Answer:

Option (d)

52.
The di/dt rating of an SCR is specified for its
(a) decaying anode current
(b) decaying gate current
(c) rising gate current
(d) rising anode current
Answer:

Option (d)

53.
For an SCR , dv/dt protection is achieved through the use of
(a) RL in series with SCR
(b) RC across SCR
(c) L in series with SCR
(d) RC in series with SCR
Answer:

Option (b)

54.
For an SCR, di/dt protection is achieved through the use of
(a) R in series with SCR
(b) RL in series with SCR
(c) L in series with SCR
(d) L across SCR
Answer:

Option (c)

Showing 51 to 54 out of 54 Questions
3 4 5 6