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

Related Mcqs:

1. 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...

2. 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...

3. In a rotary converter armature currents are______________?

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

4. A rotary converter operates at a______________?

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

5. 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...

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

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

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. Ageing of a selenium rectifier may change the output voltage by__________?

   A. 5 to 10 per cent B. 15 to 20 per cent C. 25 to 30 per cent D. none of the above...

10. The voltage drop between the anode and cathode, of a mercury arc rectifier comprises of the following_____________?

    A. anode drop and cathode drop B. anode drop and arc drop C. cathode drop and arc drop D. anode drop, cathode drop and arc drop...