Electrical Engineering : Dc Motors QUESTIONS AND ANSWERS :: part2 : 21 to 25
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
21.Which one of the following is not the function of pole shoes in a D.C. machine ? |
| To reduce eddy current loss |
| To support the field coils |
| To spread out flux for better unifor-mity |
| To reduce the reluctance of the mag-netic path |
22.Which of the following motor is preferred for operation in highly explosive atmosphere ? |
| Series motor |
| Shunt motor |
| Air motor |
| Battery operated motor |
23.Sparking at the commutator of a D.C. motor may result in |
| damage to commutator segments |
| damage to commutator insulation |
| increased power consumption |
| all of the above |
More Dc Motors QUESTIONS AND ANSWERS available in next pages
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