Exercise: Power Electronics

Questions for: Power Electronics

The leads in a TRIAC are denoted by
A:
anode cathode, gate
B:
T1 T2, gate
C:
T1, T2, anode
D:
T1, T2, T3
Answer: B
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A single phase full wave regulator feeds a resistive load. The firing angle of thyristors is 90°. The input power factor is
A:
1
B:
0.707 lagging
C:
0.5 lagging
D:
0.2 lagging
Answer: B
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A cycloconverter is a group of controlled rectifiers.
A:
True
B:
False
C:
D:
Answer: A
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The static equalisation circuit for thyristors connected in series is
A:
one resistor in series with each thyristor
B:
one resistor in parallel with each thyristor
C:
one resistor and one capacitor in parallel with each thyristor
D:
none of the above
Answer: B
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If peak value of input voltage is Vm and firing angle is a, the average output voltage for single phase half wave and single phase full wave regulators are
A:
B:
C:
D:
Answer: A
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