Lubrication system

Friction that occurs between the layers of oil film is called

• viscous friction

• greasy friction

• dry friction

• boundary friction

The most important property of the lubricant is

• density

• viscosity

• thermal conductivity

• none of the above

The maximum pressure in the lubrication system is controlled by

• oil pump

• oil filter

• valve relief

• supply voltage

The lubricants commonly used in the automobiles are

• animal oils

• vegetable oils

• synthetic oils

• cooking oils

Oil pressure in the dry sump lubrication system is around

• 5 bar – 10 bar

• 11 bar – 15 bar

• 3 bar – 8 bar

• 1 bar

Mist lubrication system is mainly used in

• four-stroke petrol engine

• four-stroke diesel engine

• two-stroke petrol engine

• Wankle engine

The principal surfaces requiring lubrication in an IC engine are

• cylinder head

• crankcase

• inlet and exhaust manifold

• none of the above

Most commonly used lubrication system in automobiles is the

• splash system

• pressure system

• petrol system

• gravity system

Semi pressure system is a combination of splash and pressure systems.

• True

• False

____________ is the property of lubricating oil due to which the oil particles stick with the metal surfaces.

• Oiliness

• Pour point

• Adhesiveness

• None of the mentioned