Pulse Converters MCQs : This section focuses on the "Pulse Converters" in 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
A ____________ converter converts AC to DC energy linecommutated.
A. node controlled
B. phase controlled
C. unit controlled
D. design controlled
Question 2
Which of the following has variable output?
A. Voltage
B. AC power
C. DC voltage output
D. None of the above
Question 3
Which of the following is used to generate pulses for pulse width modulation converters that are carrier based?
A. 2- Pulse
B. 3- Pulse
C. 4- Pulse
D. 5- Pulse
Question 4
How many arms does singlephasefullbridge has?
A. 1
B. 2
C. 3
D. 4
Question 5
In 6-Pulse Converter, the number of pulses is __________ that of phases.
A. equal
B. twice
C. thrice
D. None of the above
Question 6
A three phase full converter will require __________ number of SCRs.
A. 3
B. 4
C. 5
D. 6
Question 7
In case of a three phase full controlled converter with 6 SCRs, commutation occurs every
A. 15 degree
B. 30 degree
C. 45 degree
D. 60 degree
Question 8
A three-phase, three-pulse, M-3 type controlled converter uses 3 number of SCRs.
A. TRUE
B. FALSE
C. Can be true or false
D. Can not say
Question 9
A three-phase, three-pulse, M-3 type controlled converter has firing angle for one of the SCRs set as 15°. This SCR would start conducting at?
A. 0 degree
B. 15 degree
C. 30 degree
D. 45 degree
Question 10
The moment the load current drops to zero, the thyristor switches OFF as a result of line natural commutation.
A. Yes
B. No
C. Can be yes or no
D. Can not say