A. speed control is required
B. frequent starting, stopg and reversing is required
C. high starting torque is needed
D. all above features are required
A. twice the full load torque
B. 1.5 times the full load torque
C. equal to full load torque
A. to short circuit the rotor at slip rings
B. to short circuit the starting resistances in the starter
C. to short circuit the stator phase of motor to form star
D. none of the above
A. will continue running burning its one phase
B. will continue running burning its two phase
C. will stop and carry heavy current causing permanent damage to its winding
D. will continue running without any harm to the winding
A. 8 poles
B. 6 poles
C. 4 poles
D. 2 poles
A. directly proportional to slip
B. inversely proportional to slip
C. proportional to the square of the slip
D. none of the above
A. copper
B. carbon
C. phospor bronze
D. aluminium