DC GENERATOR 1
DC Generator Knowledge Quiz
Test your understanding of DC generators with our comprehensive quiz! This quiz covers various aspects of DC generator fun
Key features:
- 10 engaging multiple-choice questions
- Instant feedback on your answers
- Learn more about DC generators as you go!
1.In the case of four pole D.C.generator provided with a two layer lap winding with 16 coils, the pole pitch will be _______________.
4
8
16
32
2. The armature of D.C. Generator is laminated to ______________.
Reduce the copper loss
Provide the passage of cooling air
Insulate the core
Reduce eddy current loss
3. The resistance of armature winding depends on ______________.
Length of the conductor
Cross sectional area
Number of conductors
All of the above
4. The field coils of D.C. Generator are usually made of ____________.
Mica
Copper
Cast iron
Carbon
5. While applying Fleming’s right hand rule to find the direction of induced e.m.f., the thumb points towards ______________.
Direction of induced emf
Direction of flux
Direction of motion of the conductor if forefinger points in the direction of generated e.m.f.,
Direction of motion of the conductor if forefinger points along the lines of flux.
6. In lap winding, the number of brushes is always _____________.
Double the number of poles
Same as the number of poles
Half the number of poles
Two
7. In a four pole D.C. machine _____________
All the four poles are north poles
Alternate poles are north and south
All the four poles are south poles
Two north poles follow two south poles
8. In D.C. generators, current to the external circuit from armature is given through ____________.
Commutator
Solid connection
Slip rings
None of the above
9. Brushes of D.C. Machines are made of _____________
Carbon
Soft copper
Hard copper
All of the above
10. Laminations of core are generally made of ________________.
Cast iron
Carbon
Silicon steel
Stainless steel
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