Electronics and Communication Engineering - Power Electronics
Exercise :: Power Electronics - Section 6
| 26. |
A single phase converter is fed by a source having an inductance L. If load current is I0, the decrease in output voltage due to overlap is |
Answer: Option C
Explanation:
|
| 27. |
Assertion (A): An ac regulator uses natural commutation Reason (R): An ac regulator can be used for static on load tap changing of transformer. |
| 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 |
Answer: Option B
Explanation:
|
| 28. |
When a UJT is used as a relaxation oscillator the current should be |
| A. |
less than Ip | | B. |
more than Iv | | C. |
more than Ip but less than Iv | | D. |
negative |
Answer: Option C
Explanation:
|
| 29. |
In auxiliary commutated chopper, the charging and discharging time of capacitor |
| A. |
are constant | | B. |
depend on load current | | C. |
may be constant or may depend on load current | | D. |
none of the above |
Answer: Option B
Explanation:
|
| 30. |
Which chopper circuit uses saturable reactor? |
| A. |
Auxiliary commutated | | B. |
Jones chopper | | C. |
Morgan chopper | | D. |
Load commutated |
Answer: Option C
Explanation:
|
