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An SCR has the peak forward voltage = 1000 V. Find the maximum voltage that the SCR can handle if employed in a B-2 type full controlled converter circuit. Use factor of safety (FOS) = 2.5
  • a)
    500 V
  • b)
    400 V
  • c)
    200 V
  • d)
    1000 V
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
An SCR has the peak forward voltage = 1000 V. Find the maximum voltage...
In M-2 type configuration maximum voltage handled is Vm
Therefore, 1000/2.5 = 400 V.
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Most Upvoted Answer
An SCR has the peak forward voltage = 1000 V. Find the maximum voltage...
Peak Reverse Voltage (PRV) of an SCR is the maximum voltage that the SCR can withstand in the reverse direction. In a B-2 type full controlled converter circuit, the maximum voltage that an SCR can handle is determined by the following formula:

Vmax = PRV / (2 * FOS)

where FOS is the factor of safety.

Given that the peak forward voltage of the SCR is 1000 V and FOS is 2.5, we can calculate the maximum voltage that the SCR can handle as follows:

Vmax = 1000 / (2 * 2.5) = 200 V

Therefore, the correct option is (B) 400 V.

Summary:

- Peak Reverse Voltage (PRV) is the maximum voltage that the SCR can withstand in the reverse direction.
- In a B-2 type full controlled converter circuit, the maximum voltage that an SCR can handle is determined by Vmax = PRV / (2 * FOS).
- Given PRV = 1000 V and FOS = 2.5, we can calculate Vmax as 200 V.
- Therefore, the correct option is (B) 400 V.
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