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Electronics and Communication Engineering - Power Electronics

Exercise : Power Electronics - Section 7
36.
A cycloconverter is a group of controlled rectifiers.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
A single phase full wave regulator feeds a resistive load. The firing angle of thyristors is 90°. The input power factor is
1
0.707 lagging
0.5 lagging
0.2 lagging
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
The leads in a TRIAC are denoted by
anode cathode, gate
T1 T2, gate
T1, T2, anode
T1, T2, T3
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
A step down cycloconverter has an input frequency f. If it uses natural commutation, the output frequency
must be a sub-multiple of input frequency
can be any frequency
must be an even sub-multiple of input frequency
must be an odd sub-multiple of input frequency
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
In a single phase full wave regulator, the rms current in each thyristors is Ir The run load current is equal to
2Ir
2 Ir
Ir
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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