Electronics and Communication Engineering - Power Electronics
Exercise :: Power Electronics - Section 6
| 21. |
A single phase full bridge inverter for R-L loads needs |
| A. |
4 thyristors | | B. |
4 thyristors and 4 diodes | | C. |
4 thyristors and 2 diodes | | D. |
8 thyristors |
Answer: Option B
Explanation:
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| 22. |
In the basic series inverter circuit, the source current has |
| A. |
low harmonic content | | B. |
high harmonic content | | C. |
low or high harmonic content depending on firing angle | | D. |
zero harmonic content |
Answer: Option B
Explanation:
|
| 23. |
Thyristors connected in series need static and dynamic stabilizing circuits. |
Answer: Option A
Explanation:
|
| 24. |
In a controlled rectifier a freewheeling diode is necessary if the load is |
| A. |
inductive | | B. |
resistive | | C. |
capacitive | | D. |
any of the above |
Answer: Option A
Explanation:
|
| 25. |
For an illumination control circuit it is advisable to use a matched TRIAC-DIAC pair. |
Answer: Option A
Explanation:
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