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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.
Equations of static equilibrium: In particular, if the forces are parallel and we take z-axis parallel to them, then the first, second and last equations are identically satis
actual division 2km is shown as 1 cm in a map.construct a clean scale to measure km which can travel a distance upto 30 km.Show measurement of 18 km in the scale
Q. What is the use of welding electrode? An electrode is a piece of wire or a rod (of a metal or alloy), with or without flux covering, which carries current for welding. Its o
Machine and Tool Selection The quality of a product largely depends on the type of machine, the type of process, machining conditions and the right selection of tools. The cur
a) Draw a diagram of a simple carburettor and briefly explain its function. b) What are the basic characteristics of fuels for CI engines.
Supports for Rigid Bodies (Space Structures): The primary step in solving equilibrium problems is to draw free-body diagram. Isolate the body through its surrounding. Replace
Calculate the angular acceleration of the pulleys: The compound pulley system has a mass of 30 kg and a radius of gyration of 450 mm. Calculate the tension in each cord and th
How to drill 500 sheets paper ?in 4 mm dia , holes are same distance as its dia (4mm) in one line.
A copper bar 80 mm by 60 mm in cross-section (k = 370 W/m ºC) is lying in a insulated trough so that the heat transfer from one face both the edges is negligible. It is seen that w
Define strain: Sol. : STRAIN(e) : When the body is subjected to some external force, there is some change in dimension of body. The ratio between change in the dimension of b
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