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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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Maintenance of Bridges and Culverts: Careful inspection of bridges and culverts at periodic intervals can detect cracks, foundation settlement, scour, malfunction of bearings
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Sleepers: The sleeper is the part of the track on which the rails rest. Its functions are : (a) To hold the rails to the correct gauge. (b) To transmit and distribute t
Q. Scraper Launchers and Receivers? Scraper launchers and receivers associated with the pipelines shall be located in open, well-ventilated areas with the opening directed away
(a) Write short note on following : (i) Ericsson cycle (ii) Diesel cycle (iii) Stirling cycle (b) The swept volume of a diesel cycle engine working on dual cycle is 0.0
Find the distance of weight ‘x’ from support: The t wo weights C = 2000N and D = 1000N are located on horizontal beam AB as shown in the figure given below. Find the d
a) Answer the following equations by Gauss-Jordan method x 1 +2x 2 +x 3 =8 ; 2x 1 +3x 2 +4x 3 =20; 4x 1 +3x 2 +2x 3 = 16 b) Answer the following equations by Relaxation m
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What is Spot welding equipment? Spot welding machines may by classified as follows on the basis of mechanical Construction; 1. Rocker-arm Machines 2. Press-type machin
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