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Electronics and Communication Engineering - Power Electronics

Exercise : Power Electronics - Section 4
41.
If a step down chopper is fed by a dc voltage V with Ton and Toff are on and off periods then is
average output voltage
rms output voltage
average or rms output voltage depending on load
neither of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
A voltage VBB is applied across the terminals of a UJT. The emitter voltage at peak point is
hVBB
(h + 1) VBB
hVBB + VD
VD
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
A single phase bridge type cycloconverter uses eight thyristors.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
In the circuit of figure, the waveshape of load current when thyristor conducting is
constant
increasing exponentially
decreasing exponentially
either (b) or (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
In the basic series inverter circuit, the source supplies load
only in positive half cycle
both in positive and negative half cycles
only in part of positive half cycle
in positive half cycle and part of negative half cycle
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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