A single phase half wave converter is feeding a resistive load. Output dc power

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Question
A single phase half wave converter is feeding a resistive load. Output dc power is P_dc and total power delivered to load is P_ac then
Options
A. P_dc = P_ac for all values of firing angles
B. P_dc = P_ac if firing angle is less than 180�
C. P_dc < P_ac for all values of firing angles
D. P_dc < P_ac if firing angle is less than 180�

Correct Answer

P_dc < P_ac if firing angle is less than 180�

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Options
A. is constant
B. may be constant or may depend on gate current
C. decreases as gate current is increased
D. increases as gate current is increased

4. Thyristors connected in series need :
Options
A. static equalizing circuit
B. dynamic equalizing circuit
C. both static and dynamic equalizing circuits
D. none of the above

9. In a full bridge inverter, the waveshape of load current depends on
Options
A. relative values of load parameters R, L and C
B. relative values of load parameters R and L
C. relative values of load parameters L and C
D. gating frequency

10. In the basic series inverter circuit, the source supplies load
Options
A. only in positive half cycle
B. both in positive and negative half cycles
C. only in part of positive half cycle
D. in positive half cycle and part of negative half cycle

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