Hw2.2-5: Derive the following in terms of the physical parameters of the induction machine: a- the slip at maximum torque b- the maximum torque

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A motor’s rotor spins at 1,000 rpm when no load is applied (i.e. torque = 0), but reduces to 900rpm when the rated torque of 2.3 N-m is applied. Determine the speed regulation and output horsepower at the rated load condition. If the motor’s input power is 500 Watts at the rated load condition, what is the efficiency?

Which of the following statements regarding the principle of rotor operation are true? Select one or more: a. In horizontal axis wind turbines, it is desired that the lifting force be as small as possible. Ob. Drag pulls the wing backwards (HAWT). c. The operation of the Savonius rotor is based on drag.