Top 250+ Solved Electrical and Electronics Engineering MCQ Questions Answer
Q. For 3phase I.M,The synchronous speed of rotating magnetic field is 1000 rpm,speed of rotor is 960 rpm ,then slip is
a. 0.04
b. 0.02
c. 0.01
d. 0.021
Q. For 3phase I.M,the synchronous speed of rotating magnetic field is 1000 rpm,speed of rotor is 970 rpm ,then slip is
a. 0.01
b. 0.06
c. 0.03
d. 0.05
Q. For 3phase I.M,the synchronous speed of rotating magnetic field is 1500 rpm,speed of rotor is 1440 rpm ,then slip is
a. 0.01
b. 0.06
c. 0.03
d. 0.04
Q. For 3phase I.M,the synchronous speed of rotating magnetic field is 750 rpm, speed of rotor is 731.25 rpm ,then slip is
a. 0.025
b. 0.06
c. 0.03
d. 0.04
Q. For 3phase I.M.,the synchronous speed of rotating magnetic field is 1000 rpm, slip is 3% ,speed of rotor is----------
a. 970rpm
b. 1000
c. 250
d. 500
Q. For 3phase I.M,the synchronous speed of rotating magnetic field is 750 rpm, slip is 2.5% ,speed of rotor is----------
a. 500rpm
b. 731.25rpm
c. 1150rpm
d. 300
Q. For I.M. running with 731.25rpm with slip of 2.5%, the synchronous speed of rotating magnetic field
a. 750
b. 1000
c. 500
d. 1500
Q. For I.M. running with 1440rpm with slip of 4% the synchronous speed of rotating magnetic field
a. 750
b. 1000
c. 1500
d. 500
Q. For I.M. running with 970rpm with slip of 3%, the synchronous speed of rotating magnetic field
a. 750
b. 1000
c. 1500
d. 500
Q. A 6pole ,3 phase 50Hz I.M is running with 970 rpm. The slip of I.M is
a. 0.03
b. 0.05
c. 0.02
d. 0.01
Q. A 8 pole ,50Hz ,3phase I.M ,If full load slip is 2.5%. Rotor speed is
a. 200
b. 731
c. 600
d. 1000
Q. A 8pole ,3 phase 50Hz I.M is running with 731.25 rpm. The slip of I.M is
a. 0.0256
b. 1.975
c. 0.025
d. none of the above
Q. A 3-phase slip-ring induction motor has ……………… rotor.
a. short circuited
b. wound
c. squirrel cage
d. double cage
Q. A wound rotor induction motor can be distinguished from a squirrel cage induction motor by
a. presence of slip-rings.
b. frame size
c. shaft diameter
d. any of the above