Dynamics of Machinery
102602Module 2: Turning Moment Diagram
1(b). A turning moment diagram represents the variation of: (i) Power with time (ii) Torque with crank angle (iii) Speed with time (iv) Acceleration with displacement.20262m
Module 2: Turning Moment Diagram
View this question on its own page →A turning moment diagram represents the variation of: (i) Power with time (ii) Torque with crank angle (iii) Speed with time (iv) Acceleration with displacement.
1(c). Coefficient of fluctuation of speed is defined as: (i) (Nmax + Nmin)/Nmean (ii) (Nmax − Nmin)/Nmean (iii) Nmean/Nmax (iv) Nmax/Nmin.20262m
Module 2: Turning Moment Diagram
View this question on its own page →Coefficient of fluctuation of speed is defined as: (i) (Nmax + Nmin)/Nmean (ii) (Nmax − Nmin)/Nmean (iii) Nmean/Nmax (iv) Nmax/Nmin.
3(a). Define fluctuation of energy and coefficient of fluctuation of energy. Derive the expression for the coefficient of fluctuation of energy using the turning moment diagram.20267m
Module 2: Turning Moment Diagram
View this question on its own page →Define fluctuation of energy and coefficient of fluctuation of energy. Derive the expression for the coefficient of fluctuation of energy using the turning moment diagram.
3(b). The 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.20267m
Module 2: Turning Moment Diagram
View this question on its own page →The 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.