In a load commutated DC - DC chopper, the capacitor has a_____________?
Correct answer: C. Symmetric trapezoidal voltage across itself
- A. Symmetric triangular voltage across itself
- B. Symmetric rectangular voltage across itself
- C. Symmetric trapezoidal voltage across itself
- D. Symmetric sinusoidal voltage across itself
Explanation
In load commutation, the resonant load causes the capacitor voltage to rise and fall through approximately linear portions with changing slopes, producing a symmetric trapezoidal waveform. It is not a pure sinusoid because the chopper switching and load conditions shape the waveform.
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
In a 3 phase bridge rectifier the ripple frequency is _____________?
Voltage commutation circuit can be converted into a current commutation by interchanging the positions of____________?
As the breakdown voltage reached, the DIAC exhibits?
In current commutated DC-DC choppers, the voltage spike appears across the load when_____________?
For power output higher than 15 kW, the suitable rectifier is________________?
In a full wave rectifier, the rectification ratio is approximately equal to____________?