Question

Admittance of oil between two surfaces having relative motion is called:

1.  lubrication
2.  viscosity
3. coalescence
4. turbidity 

Answer 1

Correct Answer - Option 1 :  lubrication

Explanation:

Lubrication

• It is the admittance of oil between two surfaces having relative motion.

Viscosity 

• It is defined as the measure of the resistance of a fluid to gradual deformation by shear or tensile stress. In other words, viscosity describes a fluid’s resistance to flow.
• the viscosity is the measure of the friction of fluids. There are two ways to measure a fluid’s viscosity as dynamic Viscosity (Absolute Viscosity) and Kinematic Viscosity.

Coalescence 

• It is the process by which two or more separate masses of miscible substances seem to "pull" each other together until they make the slightest contact.

Turbidity

• Turbidity is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye, similar to smoke in air.
• The measurement of turbidity is a key test of water quality.