In three-phase squirrel-cage induction motors? Mark as favorite Copy Link rotor conductor ends are short circuited through slip rings rotor conductors are short-circuited through end rings rotor conductors are kept open rotor conductors are connected to insulation Check Answer
In a three-phase induction motor? Mark as favorite Copy Link iron losses in stator will be negligible as compared to that in rotor iron losses in motor will be negligible as compared to that in rotor iron losses in stator will be less than that in rotor iron losses in stator will be more than that in rotor Check Answer
Insertion of reactance in the rotor circuit? Mark as favorite Copy Link reduces starting torque as well as maximum torque increases starting torque as well as maximum torque increases starting torque but maximum torque remains unchanged increases starting torque but maximum torque decreases Check Answer
In a star-delta starter of an Induction motor? Mark as favorite Copy Link resistance is inserted in the stator reduced voltage is applied to the stator resistance is inserted in the rotor circuit applied voltage per stator phase is 57.7% of the line voltage Check Answer
The possible number of different speeds that can be obtained by connecting two motors in cascade is? Mark as favorite Copy Link 2 4 6 12 Check Answer
If a 3-phase supply is given to the stator and rotor is short circuited rotor will move? Mark as favorite Copy Link in the opposite direction as the direction of the rotating field in the same direction as the direction of the field in any direction depending upon phase sequence of supply all of these Check Answer
A double squirrel-cage induction motor has? Mark as favorite Copy Link two rotors moving in opposite direction two parallel windings in stator parallel windings in rotor two series windings in stator Check Answer
An induction motor with 1000 r.p.m. speed will have? Mark as favorite Copy Link 8 poles 6 poles 4 poles 2 poles Check Answer
The crawling in the induction motor is caused by? Mark as favorite Copy Link low voltage supply high loads harmonics developed in the motor improper design of the machine Check Answer
If any two phases for an induction motor are interchanged? Mark as favorite Copy Link the motor will run in reverse direction the motor will run at reduced speed the motor will not run the motor will burn Check Answer