A. efficiency
B. power factor
C. frequency
D. output
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 - 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 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 - 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 - 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 - Short-circuit test on an induction motor cannot be used to determine___________?
A. windage losses
B. copper losses
C. transformation ratio
D. power scale of circle diagram - 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 maximum torque in an induction motor depends on___________?
A. frequency
B. rotor inductive reactance
C. square of supply voltage
D. all of the above - The speed characteristics of an induction motor closely resemble the speedload characteristics of which of the following machines?
A. D.C. series motor
B. D.C. shunt motor
C. universal motor
D. none of the above - A change of 4% of supply voltage to an induction motor will produce a change of approximately ________?
A. 4% in the rotor torque
B. 8% in the rotor torque
C. 12% in the rotor torque
D. 16% in the rotor torque
