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Lubrication systems test 2023 with complete solution

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4 pages

Written in 2022/2023

Grade A+

Wiseman

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 acting fourstroke/cycle diesel engine than in a single acting two-stroke/cycle diesel engine because __________. o :## bearing pressure in a four-stroke/cycle single acting diesel engine is conti...

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8 pages

Written in 2024/2025

Grade A+

Axpert

In which of the following situations will the oil cooler automatic bypass valve be open the greatest amount? A. Engine oil at high operating temperature B. Engine off C. Engine oil below normal operating temperature D. Oil cooler malfunction Correct Answer: C. Rationale: The bypass valve opens most when oil is cold to allow it to bypass the cooler and reach operating temperature more quickly. The purpose of a dwell chamber in a turbine engine oil tank is to provide... A. Storage ...

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29 pages

Written in 2024/2025

Grade A+

lisarhodes411

2025 LUBRICATION SYSTEMS TEST QUESTIONS WITH ANSWERS UPDATED GUARANTEED PASS/55 QUESTIONS WITH VERIFIED ANSWERS

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7 pages

Written in 2024/2025

Grade A+

Gradesway

2025/2026 LUBRICATION SYSTEMS TEST |ACTUAL 55 QS &As|ANSWERED 2025 SPRING

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7 pages

Written in 2024/2025

Grade A+

DocWorld

Exam (elaborations) Automotive Lubrication System; Questions and Answers 2 Exam (elaborations) B1 C1 Lubrication Principles; Questions and Answers 3 Exam (elaborations) Chain Drives and Lubrication; Questions and Answers 4 Exam (elaborations) Lubrication systems test; Questions and Answers 5 Exam (elaborations) lubrication systems reviewQuestio

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6 items

FirstClass1

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

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10 items

Axpert

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. Anti Friction example - a wheel bearing What do we use to control friction o :## Lubrication or oil Name three functions of oil 2 | P a g e : 2 0 2 4 | G r a d e A + Master01: DO NOT COPY AND PA...

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4 pages

Written in 2024/2025

Grade A+

Axpert

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 incorporated after the SAE rating, as in, Aeroshell 100 Oil SAE 50W, the "W" means what? o :## Winter use in cold climates The W used in front of the grade or weight number as in, Aeroshell 100 W Oil SA...

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5 pages

Written in 2024/2025

Grade A+

Axpert

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 operating pressure Why should an engine never be overfilled with oil? o :## The oil can foam and interfere with lubrication. Name the two types of oil pumps commonly used. o :## the gear type and t...

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3 pages

Written in 2024/2025

Grade A+

Axpert

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 interchangeably. (2) Most gas turbine engine oils are synthetic. Regarding the above statements, o :## *a. only No. 2 is true. 3. An oil separator is generally associated with which of the following? o ...

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15 pages

Written in 2024/2025

Grade A+

Axpert

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 heat. Name two important characteristics of aircraft engine oil. o :## The oil must be light engough to circulate freely yet heavy engough to provide the proper oil film at engine operating temper...

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4 pages

Written in 2024/2025

Grade A+

Axpert

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 absorbed by the lubricating oil in a reciprocating engine? o :## pistons and cylinder walls What will happen to the return oil if the oil line between the scavenger pump and the oil cooler separates? ...

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17 pages

Written in 2024/2025

Grade A+

Axpert

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 :## Tech A Tech A says when oxygen is mixed with oil, it will extend the life of the oil. Tech B says excessively rich air-fuel mixtures can turn the oil black. Who is right? o :## Tech B Tech A ...

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3 pages

Written in 2024/2025

Grade A+

Axpert

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 reciprocating engines has a relatively _____ (high or low) viscosity. o :## High. The measure of the change in viscosity with a given change in temperature is know as the ______ ________. o :## ...

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8 pages

Written in 2024/2025

Grade A+

Axpert

The two types of constant displacement pumps in reciprocating engine lubrication systems are the _____ and ___________ pumps. o :## gear, gerotor Depth filter o :## Consists of a matrix of fibers which are closely packed to a depth of about one inch. Semi-Depth Filter o :## Made of resin-impregnated fibers surface filtration o :## made of a standard wire mesh edge filters o :## can be either spiral would or CUNO type What component do dry-sump engines have that wet-sump engines don...

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9 pages

Written in 2024/2025

Grade A+

Axpert

The two types of constant displacement pumps in reciprocating engine lubrication systems are the _____ and ___________ pumps. gear, gerotor Depth filter Consists of a matrix of fibers which are closely packed to a depth of about one inch.

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7 pages

Written in 2023/2024

Grade A+

BRAINSCAPE1

LUBRICATION SYSTEMS (Jepp/Prep/Crane);Questions and Answers A reciprocating engine is found to have excessive oil consumption without evidence of any oil leaks. What is the likely cause? The piston rings are worn or broken. What are the functions of lubricating oil in reciprocating engines? To reduce friction between moving parts and remove heat. Name two important characteristics of aircraft engine oil. The oil must be light enough to circulate freely yet heavy enough to provide the prop...

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6 pages

Written in 2023/2024

Grade A+

FirstClass1

; lubrication systems reviewQuestions and Answers What is meant by the viscosity of an engine lubricating oil? The Viscosity of an engine's lubricating oil is a measure of an oils resistance to flow. What is meant by a wet sump lubrication system? A wet sump lubrication system means that the oil in the engine is carried internally in the engine crankcase. Some disadvantages include limited oil carrying capacity, difficulty cooling, and normally higher oil operating temperatures. What is...

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3 pages

Written in 2023/2024

Grade A+

FirstClass1

Lubrication systems test; Questions and Answers List five functions of the oil in an engine lubrication system. Cools, Cleans, seals and cushions, prevents corrosion, and reduce friction. The resistance of an oil to flow is known as its ________. Viscosity. Oil that flows freely has a ____ viscosity. Low. The oil used in reciprocating engines has a relatively _____ (high or low) viscosity. High. The measure of the change in viscosity with a given change in temperature is know as the __...

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4 pages

Written in 2023/2024

Grade A+

FirstClass1

Lubrication Systems Questions and Answers Already Passed What does the term viscosity refer to in engine lubricants? It indicates the oil's resistance to flowing. What defines a wet sump lubrication system? In this system, the oil is stored within the engine itself. What characterizes a dry sump lubrication system? This system involves keeping the oil in a separate tank, not integrated into the engine. How is the temperature of oil regulated in an aircraft engine with a recipr...

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5 pages

Written in 2023/2024

Grade A+

BrilliantScores