Test: Viscosity - Mechanical Engineering MCQ
10 Questions MCQ Test - Test: Viscosity
Viscosity is defined as the external resistance offered by a fluid to change its shape or relative motion of its parts.
Stream line flow happens when intermediate layers move with velocities proportional to the square of distance from the stationary plate.
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Newton law of viscosity states that shear stress is proportional to rate of shear at any point in the fluid.
Viscosity of lubricating oil decrease with increasing temperature.
Which of the following lubricant has least rate of change of viscosity w.r.t temperature.
In hydrodynamic lubrication, film thickness remains unaffected by change in speeds.
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
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
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