9780134361307, Chapter 3, Problem 38P

A turbine rotor is mounted on a stepped shaft that is fixed at both ends as shown in The torsional stiffnesses of the two segments of the shaft are given by k = 3,000 N-m/rad and k2 = 4,000 N-m/rad. The turbine generates a harmonic torque given by M(1) = Mo cos wt about the shaft axis with M, = 200 N-m and w = 500 rad/s. The mass moment of inertia of the rotor about the shaft axis is J, = 0.05 kg-m?. Assuming the equivalent torsional damping constant of the system as e, = 2.5 N-m-s/rad, determine the steady-state response of the rotor, 0(1). O(1) M(1) = Mg cos etr %3! Turbine rotor, Jo

A turbine rotor is mounted on a stepped shaft that is fixed at both ends as shown in The torsional stiffnesses of the two segments of the shaft are given by ka = 3,000 N-m/rad and k2 = 4,000 N-m/rad. The turbine generates a harmonic torque given by M(t) = Mo cos wt about the shaft axis with M, = 200 N-m and w = 500 rads. The mass moment of inertia of the rotor about the shaft axis is Jo = 0.05 kg-m. Assuming the equivalent torsional damping constant of the system as c, = 2.5 N-m-s/rad, determine the steady-state response of the rotor, 6(1). O(1) ke M(1) = M, cos ot Turbine rotor, Jo

The figure below depicts a camshaft assembly such as one that might be found in an automobile engine to open and close intake and exhaust valves. The cam is a circular disk of radius R with a hole of diameter R cut through it. As shown in the figure, the hole does not pass through the center of the disk. The cam with the hole cut out has mass M. The cam is mounted on a uniform, solid, cylindrical shaft of diameter R and also of mass M. What is the kinetic energy of the entire camshaft assembly when it is rotating with angular speed ω about the shaft's axis? (Use any variable or symbol stated above as necessary.)

The figure below depicts a camshaft assembly such as one that might be found in an automobile engine to open and close intake and exhaust valves. The cam is a circular disk of radius R with a hole of diameter R cut through it. As shown in the figure, the hole does not pass through the center of the disk. The cam with the hole cut out has mass M. The cam is mounted on a uniform, solid, cylindrical shaft of diameter R and also of mass M. What is the kinetic energy of the entire camshaft assembly when it is rotating with angular speed ? about the shaft's axis? (Use any variable or symbol stated above as necessary.)

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Find the piston size of a 4-stroke, 4-cylinder engine, given the following Crankshaft rotation = 2500 rpm Mean Effective Pressure = 162 psi Indicated horsepower = 125 Bore-stroke ration = 1:1.5

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As a junior field engineer, you have been asked to assist a contractor in resolving the following problem. A 4.9 kW motor and gear drive rated at 175 rpm has been shipped with the four impeller blades listed below. The baffled rapid mix tank to which one of the impellers will be installed is 3.0 m² in volume (1.56 m diameter and 1.56 m depth). Assume water temperature of 10C, G= 1000s, water density = 1000 kg/m³, and motor power to water power transfer efficiency of 80%. Impeller options: A. Axial flow, 3 blades, diameter = 0.48 m, N₁-1.0 B. Axial flow, 3 blades, diameter = 0.61 m, Np=1.0 C. Radial flow, 6 blades, diameter = 0.48 m, Np=6.3 D. Radial flow, 6 blades, diameter = 0.61 m, Np 6.3 Answer the following: 3. What is the rotational speed (n) in rps? b. What is the power required in kW for impeller option A? What is the power required in kW for impeller option C? C. d. What is the power transferred to the water from the selected motor in kW? e. Which impeller should be used?…