Solved PYQs 1-7 of 104: Power Electronics and Drives | IES-ESE (Engineering Services) Electrical Enginnering | Chapter-wise | PYQ 2025
1979 PYQs with Explanations (2026-2027 Exam)
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Question 1 | PYQ 2025MCQ: Read the question, then carefully choose the correct answer(s).
The reverse recovery time of a power diode is 10 μs and the rate of fall of current is about 200 A/μs. What is the storage charge?
Power Electronics and DrivesSemiconductor Power Diodes
Question 2 | PYQ 2025MCQ: Read the question, then carefully choose the correct answer(s).
The advantageous feature of AC drives with a current source DC link converter is
Power Electronics and DrivesBridge ConvertersBasis Concepts of Adjustable Speed DC and AC Drives
Question 3 | PYQ 2025MCQ: Read the question, then carefully choose the correct answer(s).
When an AC main is ON, the rectifier circuit will supply the power to the inverter as well as to the battery, therefore, it acts as a
Power Electronics and DrivesBridge ConvertersPrinciples of Choppers and Inverters
Question 4 | PYQ 2025MCQ: Read the question, then carefully choose the correct answer(s).
Based on the use of resonant tank, the resonant converters are classified as
- resonant DC link converters
- resonant AC link converters
- resonant switch converters
- load resonant converters
Select the correct answer.
Power Electronics and DrivesBridge ConvertersResonant Converters
Question 5 | PYQ 2025MCQ: Read the question, then carefully choose the correct answer(s).
If resonant elements are added to the DC-DC converters, then the resulting converters are known as
Power Electronics and DrivesBridge ConvertersDC-DC Switched Mode Converters
Question 6 | PYQ 2025MCQ: Read the question, then carefully choose the correct answer(s).
The resonant technique processes power in sinusoidal form. The power switches are often turned off under
Power Electronics and DrivesBridge ConvertersResonant Converters
Question 7 | PYQ 2025MCQ: Read the question, then carefully choose the correct answer(s).
DC to DC converters basically consist of two conversion stages, namely
Power Electronics and DrivesBridge ConvertersDC-DC Switched Mode Converters