Power Electronics [GATE (Graduate Aptitude Test in Engineering) Electrical Engineering]: Questions 5 - 8 of 10

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Question 5

Appeared in Year: 2021

Question

Consider the boost converter shown. Switch Q is operating at 25 kHz with a duty cycle of 0.6. Assume the diode and switch to be ideal. Under steady-state condition, the average resistance as seen by the source is ________ . (Round off to 2 decimal places.)

Question 6

Power Electronics

Appeared in Year: 2019

Question

MCQ▾

A DC-DC buck converter operates in continuous conduction mode. It has 48 V input voltage, and it feeds a resistive load of 24 . The switching frequency of the converter is 250 Hz. If switch-on duration is 1 msec, the load power is

Choices

Choice (4)Response

a.

12 W

b.

6 W

c.

24 W

d.

48 W

Question 7

Appeared in Year: 2021

Question

Consider the buck-boost converter shown. Switch Q is operating at 25 kHz and 0.75 duty-cycle. Assume diode and switch to be ideal. Under steady-state condition, the average current flowing through the inductor ________ A.

Question 8

Appeared in Year: 2020