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

Access detailed explanations (illustrated with images and videos) to 356 questions. Access all new questions- tracking exam pattern and syllabus. View the complete topic-wise distribution of questions. Unlimited Access, Unlimited Time, on Unlimited Devices!

View Sample Explanation or View Features.

Rs. 250.00 -OR-

How to register? Already Subscribed?

Question 5

Appeared in Year: 2021

Question

Numeric Answer▾

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.)

The Boost Converter

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

Numeric Answer▾

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.

The Buck-Boost Converter

Question 8

Appeared in Year: 2020

Question

Numeric Answer▾

A single-phase inverter is fed from a 100 V dc source and is controlled using a quasi-square wave modulation scheme to produce an output waveform, v (t) , as shown. The angle σ is adjusted to entirely eliminate the 3rd harmonic component from the output voltage. Under this condition, for v (t) , the magnitude of the 5th harmonic component as a percentage of the magnitude of the fundamental component is ________ (rounded off to 2 decimal places) .

A Single-Phase Inverter

Developed by: