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Dynamics 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.20267mDynamics 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.20267mMICROPROCESSORSA timing diagram shows: (i) Logical output of program (ii) Voltage transitions with respect to time (iii) Machine code of instruction (iv) Bus architecture20242mRobotics Sensors and Actuators Which of the following types of speed is measured by a tachometer encoder? (i) False pulse (ii) Single revolution in multiple track (iii) Forward and inverse direction (iv) Exact position of the motor shaft20242m
PreviousIn force analysis of a mechanism, inertia force is generally considered to act: (i) In the direction of acceleration (ii) Opposite to the acceleration (iii) Perpendicular to acceleration (iv) Along the velocity.NextCoefficient of fluctuation of speed is defined as: (i) (Nmax + Nmin)/Nmean (ii) (Nmax − Nmin)/Nmean (iii) Nmean/Nmax (iv) Nmax/Nmin.
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