At the first critical speed a shaft will

Related MCQs

• A solid shaft and a hollow shaft are to be of equal strength in torsion. The hollow shaft is to be 10% larger in diameter than the solid shaft. The ratio of the weight of the hollow shaft will be (both shafts being made of same material)
• A key and a shaft are made from the same material. The key is rectangular with a width of D/4 and a height of 3D/16. The shaft is under torsion only. The necessary length of the key for equal strength of the shaft and key will be
• The critical speed of a shaft is affected by
• The critical speed of a shaft can be increased by
• A solid shaft of 100 mm diameter transmits 100 HP at (450/?) r.p.m. The torque in kg-m on the shaft would be
• If a square key and the shaft are to be of the same material and of equal strength, the length of key would be (d = dia. Of shaft)
• Approximate horse power that can be transmitted by a shaft 60 mm diameter at 180 r.p.m. with permissible shear stress of 850 kg/cm2, would be
• While designing a shaft pulley and key for a system
• Which of the following key permits axial relative motion between the shaft and the hub?
• The usual clearance provided in hydrodynamic bearing per mm of diameter of shaft is