Lubrications Exam Test Questions and Correct Answers Latest Update, Graded A+

List five functions of the oil in an engine lubrication system. o :## Cools, Cleans, seals and cushions, prevents corrosion, and reduce friction. The resistance of an oil to flow is known as its ________. o :## Viscosity. Oil that flows freely has a ____ viscosity. o :## Low. The oil used in...

Since the early 1960s, road draft tubes have been used to replace PCV systems T or F o :## False Tech A says additive packages make up as much as one third of the volume of a container of oil. Tech B says friction modifiers added to oil help the oil stick to metal surfaces. Who is right? o ...

Which of these characteristics is desirable in turbine engine oil? A- Low flash point B- High flash point C- High volatility o :## B The type of oil pumps most commonly used on turbine engines are classified as o :## positive displacement What is the source of most of the heat that is absorbe...

A reciprocating engine is found to have excessive oil consumption without evidence of any oil leaks. What is the likely cause? o :## The piston rings are worn or broken. What are the functions of lubricating oil in reciprocating engines? o :## To reduce friction between moving parts and remove ...

1. What will be the result of operating an engine in extremely high temperatures using a lubricant recommended by the manufacturer for a much lower temperature? o :## *c. The oil pressure will be lower than normal. 2. (1) Gas turbine and reciprocating engine oils can be mixed or used interch...

Reducing friction between moving engine parts is one of the functions of which system? o :## lubrication system Why is engine oil pumped through a filter? o :## the filter cleans it When does most engine wear occur? o :## when a cold engine is started up, before the oil reaches its normal o...

On most modern diesel engines, the main and connecting rod bearings receive their lubricating oil by __________. o :## pressure feed A well-lubricated bearing surface always appears __________. o :## highly polished Proper lubrication of the main bearings is more easily obtained in a single ac...

The function of engine oil is/are o :## To reduce friction, acts as a cushion between metal parts, cools the engine, cleans motor, and prevents corrosion. What effect does temperature have on lubricating oils? o :## The viscosity of oil is affected by temperature. When the letter W is incorpor...

Friction o :## The resistance to movement between two parts in contact with each other Name two kinds of friction o :## A. Wet o B. Dry Name two types of bearings o :## A. Friction o B. Anti Friction Give an example of each type of bearing o :## A. Friction example - a crankshaft o B....