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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.
Derive the characteristic equations of motion for the underdamped, critical damped and overdamped free damped vibration system. Write short notes on i. Fourier series and har
Seismometer : this is a transducer in which signal is proportional to the displacement. Accelerometer : This is a transducer in which signals is proportional to the a
(a) What is cushioning effect of a tyre? (b) What are the desired properties of a wheel?
Q. Working of Burner Assembly in steam generators? The Steam Generators shall be equipped with a packaged burner assembly consisting of a burner, combustion air fan, ductwork,
Q. What is Issued for Approval? This initial formal issue of the P&IDs to the Customer incorporates the process development agreed to in the approved IFD level PFDs. In additi
‘coefficient of insensitiveness’ of governors
Reassembly Position of Critical Parts: Care should be taken to note the position of the unidirectional parts while dismantling the engine. This will ensure dimensions (depth, dis
Types in trusses
Series Spot Welding In series welding, a portion of the secondary current by passes any weld nugget being formed. And This shunt current passes through one of the panels being
with usual notations the effort lost due to friction is given by A) P-W/V.R B) P×V.R-W C) P-W×V.R D) P+W/V.R
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