The starting torque of a D.C. motor is independent of which of the following?

Related Mcqs:

1. _______________has the least value of starting torque to full load torque ratio?

   A. D.C. shunt motor B. D.C. series motor C. Squirrel cage induction motor D. Slip ring induction motor...

2. The starting torque in case of centrifugal pumps is generally_________________?

   A. less than running torque B. same as running torque C. slightly more than running torque D. double the running torque...

3. A pony motor is used for the starting which of the following motors ?

   A. Squirel cage induction motor B. Schrage motor C. Synchronous motor D. None of the above...

4. _________________method of starting a three phase induction motor needs six terminals ?

   A. Star-delta B. Resistance starting C. Auto-transformer D. None of the above...

5. ________________ motor is a constant speed motor?

   A. Synchronous motor B. Schrage motor C. Induction motor D. Universal motor...

6. A wound rotor induction motor is preferred, as compared to squirrel cage induction motor, when major consideration is____________________?

   A. slop speed operation B. high starting torque C. low windage losses D. all of the above...

7. The pulsating torque exerted by steam locomotives causes which of the following ?

   A. Jolting and skidding B. Hammer blow C. Pitching D. All of the above...

8. Which of the following works on torque on the current carrying conductor placed in magnetic field ?

   A. galvanometer B. ammeter C. voltmeter D. all of the above...

9. In squirrel cage induction motors which of the following methods of starting cannot be used ?

   A. Resistance in rotor circuit B. Resistance in stator circuit C. Auto-transformer starting D. Star-delta starting...

10. need frequent starting and stopping of electric motors ?

    A. Paper mills B. Grinding mills C. Air-conditioners D. Lifts and hoists...