A rotary converter is a single machine with______________?

Related Mcqs:

1. In a single phase rotary converter the number of slip rings will be_____________?

   A. two B. three C. four D. six E. none...

2. A rotary converter in general construction and design, is more or less like___________?

   A. a transformer B. an induction motor C. an alternator D. any D.C. machine...

3. In a rotary converter I2R losses as compared to a D.C. generator of the same size will be___________?

   A. same B. less C. double D. three times...

4. In a rotary converter armature currents are______________?

   A. d.c. only B. a.c. only C. partly a.c. and partly d.c....

5. A rotary converter operates at a______________?

   A. low power factor B. high power factor C. zero power factor D. none of the above...

6. A rotary converter combines the function of____________?

   A. an induction motor and a D.C. generator B. a synchronous motor and a D.C. generator C. a D.C. series motor and a D.C. generator D. none of the above...

7. With a motor converter it is possible to obtain D.C. voltage only upto__________?

   A. 200-100 V B. 600—800 V C. 1000—1200 V D. 1700—2000 V...

8. A synchronous converter can be started______________?

   A. by means of a small auxiliary motor B. from AC. side as induction motor C. from D.C. side as D.C. motor D. any of the above methods E. none of the above methods...

9. In mercury arc rectifiers having grid, the arc can be struck between anode and cathode only when the grid attains a certain potential, this potential being known as______________?

   A. maximum grid voltage B. critical grid voltage C. any of the above D. none of the above...

10. When a rectifier is loaded which of the following voltage drops take place ?

    A. Voltage drop in transformer reactance B. Voltage drop in resistance of transformer and smoothing chokes C. Arc voltage drop D. All of the above...