Power Electronics (3140915) MCQs
MCQs of DC-DC converters - Switching Voltage Regulators
| 31. |
In the current limit control method, the chopper is switched off when
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Answer:
Option (b) |
| 32. |
Which of the following mentioned control strategy/strategies would require a feedback loop?
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Answer:
Option (c) |
| 33. |
In the current limit control method, when the load current reaches a predefined lower value, then
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Answer:
Option (b) |
| 34. |
What is the expression for load voltage when the chopper is operated in the second quadrant?
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Answer:
Option (d) |
| 35. |
For a type E chopper operating in the first quadrant, find the expression for average output voltage.
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Answer:
Option (a) |
| 36. |
The load emf E must be reversed for
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Answer:
Option (d) |
| 37. |
For the type E chopper to be operated in the fourth quadrant
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Answer:
Option (a) |
| 38. |
In a type E chopper, if all the four chopper switches are closed simultaneously then
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Answer:
Option (b) |
| 39. |
A type A step down chopper has Vs = 220 V and is connected to RLE load. With R = 1 Ω, E = 24 V and L large enough to maintain continuous conduction. Find the average value of load current for a duty cycle of 30 %.
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Answer:
Option (c) |
| 40. |
The process of commutating a SCR by applying a reverse voltage to an SCR through a previously charged capacitor is called as
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Answer:
Option (c) |
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