In a single phase full wave converter (M - 2 connection), the rms transformer vo

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Question
In a single phase full wave converter (M - 2 connection), the rms transformer voltage is 300 V across each half of secondary. The PIV for each thyristor is
Options
A. 300 V
B.
C. 6002 V
D.

Correct Answer

6002 V

Explanation

PIV is twice the peak voltage across each half of secondary.

Power Electronics problems

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1. In a 3 phase full wave regulator feeding resistance load connected in star, the possible range of firing angle a is
Options
A. 0 ? a ? 180�
B. 0 ? a ? 150�
C. 0 ? a ? 120�
D. 0 ? a ? 90�

4. In a 3 phase full converter the average load current is 150 A. The average thyristor current is
Options
A. 150 A
B. 75A
C. 50 A
D. 25 A

5. A thyristor is reverse biased. A positive gate pulse is applied. The thyristor
Options
A. will be turned on
B. may or may not turn on
C. will not turn on
D. will turn on after sometime

7. A single phase half wave converter is feeding a resistive load. Just before triggering, the voltage across thyristor is
Options
A. zero
B. about 1 V
C. same as input voltage
D. twice the input voltage

10. Assertion (A): The gate current of an SCR is always in the form of pulses.
Reason (R): The gate losses, in pulse triggering, are low.
Options
A. Both A and R are correct and R is correct explanation of A
B. Both A and R correct but R is not correct explanation of A
C. A is correct but R is wrong
D. A is wrong but R is correct

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