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A single phase fully controlled bridge converter supplies a load drawing constant and ripple free load current. If triggering angle is 30°, then input power factor will be
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- 0.65
- 0.78
- 0.85
- 0.866
Correct Option: B
Average output voltage
For α = 30°,
| V0 = | Vm | |
| π |
| Input VA = |  |  | I0 | |
| √2 |
Input power facts
| = | Vm . I0 | |||||
| π | ||||||
| VmIs | . I0 | |||||
| √α | ||||||
| = | = 0.78 | |
| π |
