Electronics and Communication Engineering - Power Electronics
Exercise :: Power Electronics - Section 4
| 1. |
A chopper cannot be line commutated. |
Answer: Option A
Explanation:
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| 2. |
Natural commutation can be used in : |
| A. |
DC circuits only | | B. |
AC circuits only | | C. |
both AC and DC circuits | | D. |
none of the above |
Answer: Option B
Explanation:
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| 3. |
In a thyristor the gate lead is connected to the n layer near the p layer to which anode is connected. |
Answer: Option B
Explanation:
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| 4. |
A single phase half wave rectifier circuit has a free wheeling diode. The free wheeling diode will conduct only if |
| A. |
load is purely resistive | | B. |
load is purely inductive | | C. |
load is combination of R and L | | D. |
load is purely inductive or combination of R and L |
Answer: Option D
Explanation:
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| 5. |
McMurray Bedford full bridge inverter uses |
| A. |
natural commutation | | B. |
auxiliary commutation | | C. |
complementary commutation | | D. |
any of the above |
Answer: Option C
Explanation:
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