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The shaft, as given in Figure is driven by pulley B from an electric motor. Another belt drive from pulley A is operating a compressor. The belt tensions for pulley A are 1500 N and 600 N. The ratio of belt tensions for pulley B is 3.5. The diameter d of pulley A is 150 mm and the diameter d of pulley B is 480 mm. The maximum allowable tensile stress for the shaft material is 170 MPa and the allowable shear stress is 85 MPa. Taking bending and torsion factors as 1.25 and 1.75 respectively, Evaluate the shaft diameter. Also search out the dimensions for a hollow shaft with outside diameter limited to 30 mm. Compare the weights of the two shafts.
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Q. Seismic Loads For Structure-Mounted Equipment? For equipment mounted in a structure above grade, the governing equation for seismic force is: F p = A v C c Pa c W c , wh
Data given for gear problem T P = 30 TG = 80 φ = 20o m = 12 mm Addendum = 10 mm then determine the length of path of contact, length of Arc of contact and contact Ratio.
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Q. Explain about Napthenic Acid Corrosion? Some crude oils contain napthenic acids, which, at elevated temperatures, may contribute to more active corrosion with or without the
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What is load? Sol. : A load can be defined as the combined effect of external forces acting on the body. The load is applied on body whereas stress is induced in material of
Tachometer: This is used to measure the speed (revolutions) of an engine in revolutions per minute (RPM). This is shown in Figure. Figure : Tachometer
Imperfect Frame - truss: Imperfec t Frame An Imperfect frame is one that does not satisfies relation between numbers of members and number of joints given by equation
Specific volume of the superheated steam: It is volume occupied by unit mass of superheated steam corresponding to given pressure of superheated steam generation. Superheated
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