Electrical Machine Design MCQ

Electrical Machine Design MCQ Questions

• 1. Which is the major consideration to develop a good electric machine design?
• 2. D.C. machines designed with a large value of air gap length have ___.
• 3. Portative electromagnets generally function as holding magnets.
• 4. Which of the following instruments indicate the instantaneous value of the electrical quantity being measured at the time at which it is being measured ?
• 5. Which of the following is the commonly used type of electromagnets ?
• 6. Wattmeter cannot be designed on the principle of ___.
• 7. Is Resistance is measured with the help of potentiometer?
• 8. A Weston synchronoscope is a ___.
• 9. The efficiency of a machine should be as ______ as possible to reduce the operating cost.
• 10. Which of the following methods is used for air cooling of turbo alternators ?
• 11. By which of the following methods motor rating for therapy load drives can be determined?
• 12. Which off the following methods is most accurate ?
• 13. The tap changing facility is usually provided on ________ transformers.
• 14. A transformer is considered to have a network or series capacitance due to ___.
• 15. Multi step core is used in transformer to ___.
• 16. In DC machines air gap is _________ in comparison to that in AC machines.
• 17. What are the factors that decide the choice of specific magnetic loading?
• 18. What are the two types of winding used in the dc machines?
• 19. CROS cannot be used in _________ rotating machines.
• 20. _______ brushes are fragile and cause excessive wear of commutator.