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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