When the load is above _______________ a synchronous motor is found to be more economical?
Correct answer: D. 100 kW
- A. 2 kW
- B. 20 kW
- C. 50 kW
- D. 100 kW
Explanation
Synchronous motors become economically attractive for large loads, commonly above about 100 kW, because their higher cost is offset by improved efficiency and power-factor correction. Below this level, induction motors are usually cheaper and simpler.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Electrical Machines
1,061 free Electrical Machines 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 Electrical Machines questions
________________is preferred for automatic drives?
The selection of an electric motor for any application depends on which of the following factors ?
While selecting an electric motor for a floor mill, which electrical characteristics will be of least significance ?
Light duty cranes are used in which of the following ?
Which of the following motors are pre-ferred for overhead travelling cranes ?
_______________watt-hours per tonne km is usually the specific energy consumption for suburban services?