The power scale of circle diagram of an induction motor can be found from__________?

Related Mcqs:

1. In the circle diagram for induction motor, the diameter of the circle represents____________?

   A. slip B. rotor current C. running torque D. line voltage...

2. The complete circle diagram of induetion motor can be drawn with the help of data found from__________?

   A. noload test B. blocked rotor test C. stator resistance test D. all of the above...

3. Which is of the following data is required to draw the circle diagram for an induction motor ?

   A. Block rotor test only B. No load test only C. Block rotor test and no-load test D. Block rotor test, no-load test and stator resistance test...

4. The circle diagram for an induction motor cannot be used to determine____________?

   A. efficiency B. power factor C. frequency D. output...

5. When the equivalent circuit diagram of doouble squirrel-cage induction motor is constructed the two cages can be considered__________?

   A. in series B. in parallel C. in series-parallel D. in parallel with stator...

6. Slip ring motor is preferred over squirrel cage induction motor where___________?

   A. high starting torque is required B. load torque is heavy C. heavy pull out torque is required D. all of the above...

7. The good power factor of an induction motor can be achieved if the average flux density in the air gap is___________?

   A. absent B. small C. large D. infinity...

8. The power factor of an induction motor under no-load conditions will be closer to_____________?

   A. 0.2 lagging B. 0.2 leading C. 0.5 leading D. unity...

9. The low power factor of induction motor is due to___________?

   A. rotor leakage reactance B. stator reactance C. the reactive lagging magnetizing current necessary to generate the magnetic flux D. all of the above...

10. The torque of an induction motor is___________?

    A. directly proportional to slip B. inversely proportional to slip C. proportional to the square of the slip D. none of the above...