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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.
Give a generalized definition of factor of safety. Illustrate the factors responsible for Un-certainities in design necessitating a suitable factor of safety. How is ‘factor of saf
(a) Illustrate reversible, irreversible and Quasi-static process with examples. (b) What do you mean by terms change of state, path, process, property, cycle. (c) Distinguish
‘coefficient of insensitiveness’ of governors
Evaluate the least pull, through the center of wheel: A uniform wheel having 600 mm diameter, weighing 5KN rests against rigid rectangular block of 150mm height as shown in t
Describe vibration, How to calculate vibration?
Screw Driver: Screwdrivers of different sizes are used to tighten or loosen screws. These are made of vanadium steels. A typical screw driver is shown in Figure. Fig
In general, gear drive is useful for power transmission among two shafts, which are near to each other (at most at 1m distance). In addition, it has maximum efficiency whereas tran
Q1. A short vertical column consists of a channel section with the dimensions shown in Figure 1(a). The column (part of a system used to support a machine) carries a compressive p
describe about pendulum pump mechanism and diagram
sir/madam, i would like to teach online how can i have to proceed
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