Related MCQs

• For a hydrostatic thrust bearing, Thrust load=450kN, shaft speed=730rpm, shaft diameter=450mm, recess diameter=310mm,film thickness=0.15mm,viscosity of lubricant=160SUS and specific gravity=0.86.Calculate frictional power loss.
• For a hydrostatic thrust bearing,Thrust load=450kN, shaft speed=730rpm, shaft diameter=450mm, recess diameter=310mm,film thickness=0.15mm,viscosity of lubricant=160SUS and specific gravity=0.86.Calculate power loss in pumping.
• For a hydrostatic thrust bearing,Thrust load=450kN, shaft speed=730rpm, shaft diameter=450mm, recess diameter=310mm, film thickness=0.15mm, viscosity of lubricant=160SUS and specific gravity=0.86.Calculate flow requirement
• For a hydrostatic thrust bearing,Thrust load=450kN, shaft speed=730rpm, shaft diameter=450mm, recess diameter=310mm, film thickness=0.15mm, viscosity of lubricant=160SUS and specific gravity=0.86.Calculate supply pressure
• In hydrodynamic lubrication, film thickness remains unaffected by change in speeds.
• Which of the following are not true for petroff’s equation?
• Viscosity is defined as the external resistance offered by a fluid to change its shape or relative motion of its parts.
• The space between two plates (20cm*20cm*1cm), 1 cm apart, is filled with a liquid of viscosity 1 Poise. The upper plate is dragged to the right with a force of 5N keeping the lower plate stationary.What will be the velocity in m/s of flow at a point 0.5 cm below the lower surface of the upper plate if linear velocity profile is assumed for the flow?
• The shear stress at a point in a liquid is found to be 0.03 N/m2. The velocity gradient at the point is 0.15 s-1. What will be it’s viscosity (in Poise)?
• The kinematic viscosity of a fluid is 0.1 Stokes. What will be the value is m2/s?