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Electronics and Communication Engineering - Power Electronics

Exercise : Power Electronics - Section 7
21.
In a certain inverter circuit each thyristor carries 26.67 A for 60°, 13.33 A for 120° and zero A for 180° of the cycle. The rms current of thyristor is
20 A
13.33 A
6.67 A
3.33 A
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
The factor η for a UJT is about
0.1
0.2
0.6
0.9
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
The symbol in figure is for
UJT
PUT
Shockley diode
TRIAC
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
In a single phase full converter fed by a source having inductance, the number of thyristors conducting during overlap is
1
2
3
4
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
The cut in voltages for germanium and silicon diodes respectively as
0.3 V and 0.7 V
0.7 V and 0.3 V
0.6 V and 0.9 V
0.5 V and 0.7 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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