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Electronics and Communication Engineering - Power Electronics

Exercise : Power Electronics - Section 8
11.
The number of thyristors in a single phase fully controlled bridge rectifier is
16
8
4
2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
In a bridge inverter
an output transformer is essential
an output transformer is not essential
an output transformer cannot be connected
an output transformer, if used, can improve the efficiency of the circuit
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
An ideal rectifier should have
100% efficiency, zero ripple factor, zero harmonic factor and unity displacement factor
100% efficiency, zero tipple factor, zero harmonic factor and zero displacement factor
100% efficiency, zero ripple factor, unity harmonic factor and unity displacement factor
100% efficiency, unity ripple factor, zero harmonic factor and unity displacement factor
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
When thyristors are connected in parallel, the current distribution may become non-uniform due to
inductive effect of current carrying conductors
capacitive effect of current carrying conductors
both inductive and capacitive effects
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
A single phase fully controlled bridge converter is fed by a voltage Vm sin ωt. The average and rms values of output voltage are
cos a and Vm
cos a and 2 Vm
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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