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

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

A 50 hp, 240 V, 4 poles, 60 Hz, Delta connected, three phase induction motor, ifR 1 =0,4 ohm, R’ 2 =0,6 ohm, X 1 =1,0 ohm, X’ 2 =1,0 ohm, n s =1800 and n=1710.Find the following quantities:a) I 1 =I’ 2 =?b) t=?c) I st =?d) t st =?e) t max =?f) S max =?g) Sketch thetorque-speedcharacteristic

Slip of 3-Phase Induction Motor in motor mode should always beQuestion 3Select one:a.Zerob.0..1c.Equal to 2d.Greater than 1

If a 3 phase, 25 kV (L-L), 50Hz Star connected synchronous generator runs at 1000 rpm. Then, the number of poles and voltage per phase is _______ & ________ respectively.Select one:a.6 poles, 15080.8 Vb.6 poles, 13334.5 Vc.12 poles, 15008 Vd.6 poles, 14433.7 V

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.