Electrical Engineering : Dc Generators QUESTIONS AND ANSWERS :: part2 : 16 to 20
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
16.D.C. generators are connected to the busbars or disconnected from them only under the floating condition |
| to avoid sudden loading of the primemover |
| to avoid mechanicaljerk to the shaft |
| to avoid burning of switch contacts |
| all above |
17.Magnetic field in a D.C. generator is produced by |
| electromagnets |
| permanent magnets |
| both (a) and (b) |
| none of the above |
18.In a D.C. generator the ripples in the direct e.m.f. generated are reduced by |
| using conductor of annealed copper |
| using commutator with large number of segments |
| using carbon brushes of superior quality |
| using equiliser rings |
19.In case of D.C. machine winding, number of commutator segments is equal to |
| number of armature coils |
| number of armature coil sides |
| number of armature conductors |
| number of armature turns |
20.A D.C. welding generator has |
| lap winding |
| wave moving |
| duplex winding |
| any of the above |
More Dc Generators QUESTIONS AND ANSWERS available in next pages
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