11. |
In case of a single-phase half-wave circuit with RL load, with firing angle α and extinction angle β, the conduction angle γ can be written as
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Answer:
Option (b) |
12. |
Choose the correct statement with respect to 1-Φ half wave controlled rectifier having R-L load with freewheeling diode circuit.
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Answer:
Option (b) |
13. |
In 1-Φ half wave controlled rectifier having R-L load with freewheeling diode circuit; when, the commutating diode or FD is conducting than the
power-electronics-questions-answers-freshers-q1
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Answer:
Option (b) |
14. |
In a single-phase half-wave circuit with RL load and a freewheeling diode, the load voltage during the freewheeling period will be
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Answer:
Option (a) |
15. |
A single-phase half wave rectifier with a FD is supplied by Vs = 240 V, AC with a load R = 10 Ω, L = 0.5 mH and a firing angle α = 30°. Find the average value of the load voltage.
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Answer:
Option (b) |
16. |
A single-phase HW rectifier with a FD is supplied by Vs = 240 V, 50 Hz, AC with a load R = 10 Ω, L = 0.5 mH and a firing angle α = 30°. Find the average value of the load current.
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Answer:
Option (a) |
17. |
A single phase half-wave controlled rectifier has 400 sin314t as the input voltage and R as the load. For a firing angle of 60°,the average output voltage is
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Answer:
Option (b) |
18. |
A single-phase half-wave rectifier with a FD is supplied by Vs = 240 V, 50 Hz, AC source with a load R = 10 Ω, L = 0.8 mH. The firing angle is so adjusted such that the output voltage obtained is 100 V. Find the firing angle.
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Answer:
Option (c) |
19. |
By using a freewheeling diode (FD) in a rectifier with RL load, the power consumed by the load
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Answer:
Option (a) |
20. |
A 230 V, 50 Hz, one-pulse SCR controlled converter has extinction angle β = 210°. Find the circuit turn-off time
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Answer:
Option (c) |