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

Related Mcqs:

1. A rotary converter is a single machine with______________?

   A. one armature and one field B. two armatures and one field C. one armature and two fields D. none of the above...

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. In a phase-shift control method, the phase shift between anode and grid voltages can be achieved by means of______________?

   A. shunt motor B. synchronous motor C. induction regulator D. synchronous generator...

8. 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...

9. 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...

10. In phase-shift control method the control is carried out by varying the of grid voltage

    A. magnitude B. polarity C. phase D. any of the above E. none of the above...