A single phase one pulse controlled circuit has a resistance R and counter emf E load 400 sin(314 t) as the source voltage. For a load counter emf of 200 V, the range of firing angle control is _____?
Correct answer: A. 30° to 150°.
- A. 30° to 150°.
- B. 30° to 180°.
- C. 60° to 120°.
- D. 60° to 180°.
Explanation
Current can begin when 400 sin α=200, giving α=30°. It can continue until the source again falls to 200 V at 150°, so the control range is 30° to 150°.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Power Electronics
253 free Power Electronics MCQs from Electrical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Electrical Engineering questions like this
Electrical Engineering is on 2 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Power Electronics questions
A step up chopper has input voltage 110 V and output voltage 150 V. The value of duty cycle is_____?
Which statement is true for latching current ___________?
In reverse blocking mode of a thyristor______?
A single phase full bridge inverter can operated in load commutation mode in case load consist of______?
An SCR is considered to be a semi controlled device because_______?
An SCR has half cycle surge current rating of 3000 A for 50 Hz supply. One cycle surge current will be_____?