The number of armature parallel paths in a two-pole D.C. generator having duplex lap winding is______________?

Related Mcqs:

1. Two generators A and B have 6-poles each. Generator A has wave wound armature while generator B has lap wound armature. The ratio of the induced e.m.f. is generator A and B will be_______________?

   A. 2 : 3
   B. 3 : 1
   C. 3 : 2
   D. 1 : 3

2. In case of a 4-pole D.C. generator provided with a two layer lap winding with sixteen coils, the pole pitch will be__________________?

   A. 4
   B. 8
   C. 16
   D. 32

3. The e.m.f. induced in the armature of a shunt generator is 600 V. The armature resistance is 0.1 ohm. If the armature current is 200 A, the terminal voltage will be_____________?

   A. 640 V
   B. 620 V
   C. 600 V
   D. 580 V

4. For a D.C. generator when the number of poles and the number of armature conductors is fixed, then which winding will give the higher e.m.f___________ ?

   A. Lap winding
   B. Wave winding
   C. Either of A. and B. above
   D. Depends on other features of design

5. The e.m.f. generated by a shunt wound D.C. generator isE. Now while pole flux remains constant, if the speed of the generator is doubled, the e.m.f. generated will be_______________?

   A. E/2
   B. 2E
   C. slightly less than E
   D. E

6. In lap winding, the number of brushes is always_____________?

   A. double the number of poles
   B. same as the number of poles
   C. half the number of poles
   D. two

7. In the case of lap winding resultant pitch is____________?

   A. multiplication of front and back pitches
   B. division of front pitch by back pitch
   C. sum of front and back pitches
   D. difference of front and back pitches

8. In D.C. generators, lap winding is used for______________?

   A. high voltage, high current
   B. low voltage, high current
   C. high voltage, low current
   D. low voltage, low current

9. Lap winding is composed of_____________?

   A. any even number of conductors
   B. any odd number of conductors
   C. that even number which is exact multiple of poles + 2
   D. that even number which is exact multiple of poles

10. The resistance of armature winding depends on

    A. length of conductor
    B. cross-sectional area of the conductor
    C. number of conductors
    D. all of the above