Electrical machine MCQ

Electrical machine MCQ Questions

• 1. DC machine windings are -
• 2. In a dc machine 4 pole lap winding is used. The number of parallel paths are?
• 3. Inter pole winding is connected in-------------------------- ?
• 4. Equalizer rings are used in which of the followings?
• 5. Which of the following machine will be preferred to charge the batteries?
• 6. The large number of slots in induction motor -
• 7. The number of bushings in a transformer can be reduced if
• 8. The armature voltage control of dc motor will provides -
• 9. The air cores in transformers are preferred for -
• 10. The amplidyne is -
• 11. A differential relay comparator used for the protection of three phase transformers has -
• 12. Scott connection is used for the conversion of -
• 13. In a three phase transformer, the angle between two consecutive cores is -
• 14. The high leakage impedance transformers are suitable for the applications of -
• 15. In washing machines, most commonly used motors are -
• 16. Which test is also called as back to back test?
• 17. Iron loss in a transformer mainly occurs in -
• 18. In one 132 / 33 kV transformer the LV resistance is 0.02 per unit. The resistance referred to HV side is -
• 19. A short circuit test on a transformer gives -
• 20. Secondary winding of an auto transformer is also called -