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

Related Mcqs:

1. 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

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

   A. stator resistance test
   B. no-load test only
   C. short-circuit test only
   D. noue of the above

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

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

4. 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

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. An induction motor with 1000 r.p.m. speed will have____________?

   A. 8 poles
   B. 6 poles
   C. 4 poles
   D. 2 poles

8. If any two phases for an induction motor are interchanged_______?

   A. the motor will run in reverse direction
   B. the motor will run at reduced speed
   C. the motor will not run
   D. the motor will burn

9. A 3-phase induction motor stator delta connected, is carrying full load and one of its fuses blows out. Then the motor_______________?

   A. will continue running burning its one phase
   B. will continue running burning its two phases
   C. will stop and carry heavy current causing permanent damage to its winding
   D. will continue running without any harm to the winding

10. The vafcie of transformation ratio of an induction motor can be found by__________?

    A. open-circuit test only
    B. short-circuit test only
    C. stator resistance test
    D. none of the above