Power Electronics MCQs : This section focuses on the "Basics" of Power Electronics. These Multiple Choice Questions (MCQs) should be practiced to improve the Power Electronics skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
Power Electronics refers to the?
A. process of controlling the flow of current
B. process of controlling the flow of voltage
C. Both A and B
D. None of the above
Question 2
The most desirable power electronic system is one whose efficiency and reliability is ?
A. 0.25
B. 0.5
C. 0.75
D. 1
Question 3
A power electronic system converts electrical energy from one form to another.
A. TRUE
B. FALSE
C. Can be true or false
D. Can not say
Question 4
Applications of Power Electronics are classified into _________ types.
A. 1
B. 2
C. 3
D. 4
Question 5
Which of the following utilizes moving and/or rotating mechanical parts?
A. Static Applications
B. Drive Applications
C. Simple Applications
D. All of the above
Question 6
SMPS is used for?
A. obtaining controlled ac power supply
B. obtaining controlled dc power supply
C. storage of dc power
D. switch from one source to another
Question 7
HVDC transmission lines are __________ as compared to HVAC lines.
A. difficult to erect
B. more expensive for long distances
C. more expensive for long distances
D. less expensive for short distances
Question 8
For high power applications _________ are used as static switches whereas for low power applications __________ are used.
A. Transistors, SCRs
B. SCRs, transistors
C. Diodes, transistors
D. SCRs, diodes
Question 9
The negative polarity is used in the monopolar link because it
A. uses less conductor size
B. is safer
C. has less resistance
D. produces less radio interference
Question 10
Drive applications have rotating parts such as motors.
A. TRUE
B. FALSE
C. Can be true or false
D. Can not say