Question

S. The motion of a machine shaft is resisted by a load torque which inc uniformly from 100N m to 300 Nm during a half-revolution, remains cori next revolution, decreases uniformly to 100Nm during the next half-revolution, and again remains constant for the next two revolutions, the cycle being repeated. The shaft is driven at a mean speed of 500 rev/min by an electric motor which provides a stant for the e. The moment of inertia of the motor is2 kgm2and fitted to the shaft is a flywheel having mass 80kg and radius of gyration 08 m2 Determine: (a) the coefficient of fluctuation of speed, and (b) the mean motoir (Answer: 0.707 per cent; 9-163kW) power. (C.E.L)

Answer 1