Power Electronics MCQs Part 3

Power Electronics MCQs Part 3

Which of following doping is done to make a signal diode suitable for high current high voltage applications with minimum losses

Which of following doping is done to make a signal diode suitable for high current high voltage applications with minimum losses

1. A lightly doped n layer is grown between the two p and n layers
2. A lightly doped p layer is grown between the two p and n layers
3. A heavily doped p layer is grown between the two p and n layers
4. A heavily doped n layer is grown between the two p and n layers

Correct answer: 1. A lightly doped n layer is grown between the two p and n layers

See complete list of Power Electronics MCQs

When the PN junction diode is forward biased, the width of the depletion region

When the PN junction diode is forward biased, the width of the depletion region:

1. Decreases
2. Increases
3. Remains constant
4. Increases than decreases

Correct answer: 1. Decreases

Explanation: When a diode is forward biased, the depletion layer narrows down and finally it collapses to allow the flow of electric current.

When reverse breakdown occurs in a diode

When reverse breakdown occurs in a diode

1. Voltage is constant while current increases
2. Voltage increases while current is constant
3. Voltage increases while current also increases
4. Both voltage and current are constant

Correct answer: 1. Voltage is constant while current increases

Certain transistor is operating at the middle of the load line, then a decrease in the current gain would

Certain transistor is operating at the middle of the load line, then a decrease in the current gain would

1. Move the Q point down
2. Move the Q point up
3. Not change the Q point
4. Result in to and fro motion of the Q point

Correct answer: 1. Move the Q point down

The N-channel MOSFET is considered better than the P-channel MOSFET due to

The N-channel MOSFET is considered better than the P-channel MOSFET due to:

1. Faster operation
2. Low noise levels
3. Lower input impedance
4. TTL compatibility

Correct answer: 1. Faster operation

Also see:

1. Basic Electrical Laws and Theorems
2. Basic Voltage and Current MCQs
3. High Voltage Engineering MCQs
4. Induction Motor MCQs
5. Power Electronics
6. Power Distribution MCQs
7. Power Generation MCQs
8. Power System Protection MCQs
9. Synchronous Generator MCQs
10. Synchronous motor MCQs
11. Transformer MCQs