Back to questionChoose “Save as PDF” in the print window.

SarkariResultOutAdditional Assistant Engineer (Electrical) · 2026

Previous Year Question

In terms of voltage stress across SCRs, which of the given options correctly compares a bridge converter to a mid-point converter?
  1. Higher number of SCRs
  2. Lower PIV requirement per SCR
  3. No transformer losses
  4. Higher transformer utilization factor

Correct answer: B

Explanation

For the same DC output, a bridge converter subjects each SCR to a lower peak inverse voltage than a mid-point converter. This reduced PIV requirement is an important device-voltage-stress advantage of the bridge arrangement.

Step-by-step solution

Peak Inverse Voltage of SCR explanatory diagram

Correct Answer

B — Lower PIV requirement per SCR

Explanation

For the same DC output, a bridge converter subjects each SCR to a lower peak inverse voltage than a mid-point converter. This reduced PIV requirement is an important device-voltage-stress advantage of the bridge arrangement.

Key Concept

Peak Inverse Voltage of SCR

Exam Point

Bridge converter: more devices, but lower PIV per SCR.

Exam tip

Bridge converter: more devices, but lower PIV per SCR.

Quick method

Bridge converter: more devices, but lower PIV per SCR.