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Dynamics of MachineryDefine fluctuation of energy and coefficient of fluctuation of energy. Derive the expression for the coefficient of fluctuation of energy using the turning moment diagram.20267mDynamics of MachineryThe turning moment diagram for a petrol engine is drawn to these scales: turning moment, 1 mm = 5 N·m; crank angle, 1 mm = 1°. The diagram repeats itself at every half revolution of the engine. The areas above and below the mean turning moment line taken in turn are 295, 685, 40, 340, 960, 270 mm². The rotating parts are equivalent to a mass of 36 kg at a radius of gyration of 150 mm. Determine the coefficient of fluctuation of speed when the engine runs at 1800 r.p.m.20267mPower Plant EngineeringWhich parameter represents the ratio of average load to maximum demand? (i) Capacity Factor (ii) Demand Factor (iii) Load Factor (iv) Diversity Factor20262mDynamics of MachineryThe ratio of actual damping coefficient to critical damping coefficient is called: (i) Frequency ratio (ii) Damping ratio (iii) Transmissibility ratio (iv) Amplitude ratio.20262m
PreviousA turning moment diagram represents the variation of: (i) Power with time (ii) Torque with crank angle (iii) Speed with time (iv) Acceleration with displacement.NextFor a knife-edge follower, the cam profile is the same as the: (i) Pitch curve (ii) Base circle (iii) Prime circle (iv) Pitch circle.
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