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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.
Find an approximated probability: Sixteen numbers are selected independently and at random from the interval [ 0, 1 ]. Find an approximated probability that the mean of these
Process Selection in Making a Simple Part You should first determine the part's function, the types of load and environment to which it would be subjected, the dimensional to
What'' is balancing and vibration in machines Need of balancing? Causes of vibration and their harmful effects and remedies?
Static Friction: When applied force is less than limiting friction, body remains at rest and this type of frictional force is called as static friction and this law is called as l
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Find out the smallest force: A block weighing 800 N is raised up with the help of two 6o wedges B and C of negligible weights as illustrated in Figure. If the coefficient of s
Basic Concept: Proper care and maintenance are essential for trouble free operation and optimum performance of the motorcycle. A quality repair ensures that excess wear and tear i
what is the least count of following instrument? vernier caliper micrometer bevel protractor dial
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