Quiz on Lubrication and Bearings

In the selection of wire ropes, regular lay rope means wire and strands are arranged in which of the following?

• Twisted in the same direction

• Twisted in any direction

• Twisted in opposite directions

• No twisting pattern

The center of wire rope, mainly intended to support outer strands, is known as:

• Strand

• Wires

• Center

• Sheave

The study of lubrication, friction, and wear of moving or stationary parts.

• Lubrication

• Tribology

• Viscosity

• Friction analysis

The process of separating relatively moving parts or elements for the purpose of reducing the friction, wear, and heating of parts.

• Sliding

• Rolling

• Lubrication

• Tribology

Any substance, when inserted between moving surfaces, reduces friction, wear, and heating of the surfaces; and provides smooth running and satisfactory life for machine elements.

• Grease

• Lubrication

• Lubricant

• Oil

The measure of the resistance to flow of the fluid or the property that resists shearing of the fluid or lubricant.

• Viscosity

• Absolute viscosity

• Dynamic viscosity

• Kinematic viscosity

The ratio of the lubricant layer shearing stress to that of its shear strain rate.

• Absolute viscosity

• Lubricant shear strain

• Lubricant ratio

• Kinematic viscosity

The ratio of absolute viscosity and the density of the fluid or lubricant.

• Dynamic viscosity

• Kinematic viscosity

• Shear strain rate

• Absolute viscosity

The ratio of velocity of a particular lubricant layer to that of its perpendicular distance from the stationary surfaces.

• Absolute viscosity

• Dynamic viscosity

• Shear strain rate

• Kinematic viscosity

A tin or lead base alloy that is used as bearing material.

• Aluminum

• Vanadium

• Platinum

• Babbit