QUESTION 4 a) State; (i) any 3 advantages of an ac induction motor, (ii) any 2 disadvantages of an ac induction motor. =

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Question 4 A State I Any 3 Advantages Of An Ac Induction Motor Ii Any 2 Disadvantages Of An Ac Induction Motor 1 (142.12 KiB) Viewed 39 times

QUESTION 4 a) State; (i) any 3 advantages of an ac induction motor, (ii) any 2 disadvantages of an ac induction motor. = b) Give that for an induction motor ; E = rotor emf, R = rotor resistance, X = rotor reactance. Show that the stand-still torque/starting torque is given by the equation ( Hint torque of rotor , Tr kElcos o ) and hence the maximum torque is given by the equation Tmax = k EP / 2R = = a) Given that k = 3/27Ns, E = 100V, R 212, X = 6 12 and Ns = 800 rpm, determine; (i) the value of starting torque, (ii) the maximum torque which can be delivered. b) State any 2 types of the following; (i) Mechanical sensors, (ii) temperature sensors, (iii) visual displays for information.