Electrical Engineering XYZ MCQs
Which of the following is the largest conversion device for same rating:
- Synchronous machine
- DC machine
- Induction machine
- All of the above
Correct answer: 1. Synchronous machine
Explanation: Synchronous machines are generally larger than DC and induction machines for the same power rating. This is due to the synchronous machine’s construction, which includes additional components like field windings and slip rings for excitation, making them bulkier. They also typically operate at lower speeds and require more robust structures to manage electromagnetic forces and maintain synchronism with the grid frequency, which contributes to their larger size. Induction and DC machines are usually more compact for similar power levels.