A sinusoidal voltage of 5 Hz is applied to the field of a shunt generator. The armature voltage wave will_____________?

Related Mcqs:

1. 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...

2. 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...

3. Two D.C. shunt generators, each with armature resistance of 0.02 ohm and field resistance of 50 ohm run in parallel and supply a total current of 1000 amperes to the load circuit. If their e.m.fs. are 270 V and 265 V, their bus bar voltage will be_____________________?

   A. 270 V B. 267.5 V C. 265 V D. 257.4 V...

4. 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...

5. The series field of a short-shunt D.C. generator is excited by_______________?

   A. external current B. armature current C. shunt current D. load current...

6. The terminal voltage of a D.C. shunt generator drops on load because of all of the following reasons except:_____________?

   A. armature reaction B. armature resistance drop C. field weakening due to armature reaction and armature D. commutation...

7. In a D.C. generator in case the resistance of the field winding is increased, then output voltage will____________?

   A. increase B. decrease C. remain unaffected D. fluctuate heavily...

8. The terminal voltage of a series generator is 150 V when the load current is 5 A. If the load current is increased to 10 A, the terminal voltage will be____________?

   A. 150 V B. less than 150 V C. greater than 150 V D. none of the above...

9. A cumulatively compounded long shunt generator when operating as a motor would be____________?

   A. cumulatively compounded long shunt B. deferentially compounded long shunt C. cumulatively compounded short shunt D. differentially compounded short shunt...

10. A shunt generator running at 1000 r.p.m. has generated e.m.f. as 200 V. If the speed increases to 1200 r.p.m., the generated e.m.f. will be nearly_______________?

    A. 150 V B. 175 V C. 240 V D. 290 V...