A. stator resistance test
B. no-load test only
C. short-circuit test only
D. noue of the above
Related Mcqs:
- In the circle diagram for induction motor, the diameter of the circle represents____________?
A. slip
B. rotor current
C. running torque
D. line voltage - 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 - 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 - The circle diagram for an induction motor cannot be used to determine____________?
A. efficiency
B. power factor
C. frequency
D. output - 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 - 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 - 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 - 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 - 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 - 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
