(3) A Ø60mm shaft is driven @ 3,600rpm by a 300kW motor. The shaft drives a 120cm diameter chain sprocket having an output efficiency of 85%. Verify if the shaft size is safe to use if allowable torsional deflection is 1°, the maximum allowable stress is 70x10'kPa, & modulus of rigidity of G= 90x10 kPa.

A shaft is loaded by a torque of 5 KN-m. The material has a yield point of350 MPa. Find the required diameter using(a) Maximum shear stress theory(b) Maximum distortion energy theoryTake a factor of safety of 2.5.

0.6- 0.3 1.0 4.2 320 lb 1:25- 5.25 340 lb 2 1.0 1.95 0.3 B 0.6

A cylindrical steel shaft is required to transmit a bending moment of 1000 Nm and a torque of 2200 Nm with a safety factor against yielding of 3. If the steel has a yield stress of 250 MPa, find the minimum permissible diameter for the shaft. Use von Mises’ theory of yielding.

Design a shaft and flange for a Diesel engine in which protected type of flange coupling is to be adopted for power transmission. The following data is available :for design Power of engine = 75 kW; speed of engine = 200 r.p.m.; maximum permissible stress in shaft = 40 MPa; maximum %3D %3D permissible twist in shaft = 1° in length of shaft equal to 30 times the diameter of shaft; maximum torque = 1.25 x mean torque; pitch circle 3 x diameter of bolts %3D diameter of shaft; maximum permissible stress in bolts = .20 MPa Find out : 1. Diameter of shaft, 2. number of bolts, and 3. .diameter of bolts

A section of a rotating shaft is under an alternating bending moment of 70NM and a torque of 35NM. The yield strength of the material is 560 MPa and the ultimate tensile strength of the material is 700 MPa. The estimated actual endurance strength is 210 MPa. Stress concentration factor is 1.5 for well rounded fillet. Design Factor = 2. The minimum diameter of the section of the shaft is: (Use mm as the unit for your answer)

A drive shaft running at 2500 rpm has outer diameter of 80mm and innerdiameter of 60mm. The allowable shear stress in the shaft is 40MPa. Determine themaximum power that can be applied.

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