The slip ring I.M. has high starting ----with ------starting current.

Related MCQs

• External resistance is added to rotor winding of slip ring I.M to --------starting torque
• A 3-phase slip-ring induction motor has ……………… rotor.
• The speed of the slip ring induction motor can be easily controlled by
• A 50Hz 20 poles 3 phase I.M. has a full load slip 1.33%. Its rotor impedance per phase on standstill is 0.02+j0.3ohms. Then the ratio of starting torque to the maximum torque is____.
• A 3 phase induction motor is running with full load slip of 1.2% and its rotor impedance per phase is 0.06+j0.265Ω then ratio of starting torque to maximum torque is
• A 3 phase I.M. is running with full load slip of 1.2% and its rotor impedance per phase on standstill is 0.016+j0.265Ω then ratio of full load torque to starting torque is _____.
• which mathematical expression represents correct formula to find rotor current when running at slip s.(I2r)
• The rotor current in 3-phase I.M. is-----slip
• A 25kW, 3 phase I.M. is running with 6% slip. Its rotor resistance per phase is____ if frictional losses are 850W and rotor current per phase is 65A.
• A shunt motor runs at 500rpm on a 200V circuit. Its armature resistance is 0.5Ω and the current taken is 30A in addition to field current. What resistance must be placed in series with armature circuit to reduce to speed to 300 rpm; the current in armature remains same.