Which of the following statements is NOT TRUE about induction motor:Question 2Answera.The speed of the rotating flux is the same as the speed of the rotorb.The rotating flux induces voltage on the rotorc.The rotor speed is less than the synchronous speed.d.The efficiency of the induction motor depends on operating slip

How does the speed of an induction motor changes when mains frequency increases?Question 1Select one:a.decreasesb.increasesc.does not change

A 40 kW, 3-phse slip ring induction motor of negligible stator impedance runs at a speed0.96 times synchronous speed at rated torque. The slip at maximum torque is 4 times the fullload value. If the rotor resistance of the motor is is increased by 5 times, determine,(i) The speed, power output and rotor ohmic losses at rated torque(ii) The speed corresponding to maximum torque.Neglect mechanical losses.

A three-phase, 220 V, 50 Hz, induction motor has 6 poles. What is the synchronous speed and the rotor speed of this induction motor when the slip is 0.03?Question 3Answera.Ns = Nr = 1500 rpmb.Ns=1500 rpm and Nr=1455 rpmc.Ns=1000 rpm and Nr=970 rpmd.Ns=1500 rpm and Nr=1000 rpm

Which of the following method is used for controlling the speed of an induction motor:Question 9Select one:a.Multiple stator winding methodsb.Supply voltage controlc.All the options are correctd.Frequency controle.Changing number of stator poles

10 kW, 6-pole, 50 Hz, 3- phase induction motor has linear torque-slip characteristicsbetween zero torque and maximum torque. The slip at which maximum torque of 520 Nmoccurs is 0.2. For mechanical losses of 600 W, find the speed at which motor would run whiledelivering rated shaft power.