Lubricating oils - Study guides, Class notes & Summaries
Looking for the best study guides, study notes and summaries about Lubricating oils? On this page you'll find 137 study documents about Lubricating oils.
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ABSA 4B Exam Questions and Answers 100% Pass
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ABSA 4B Exam Questions and Answers 100% Pass 
Which of the following pump designs has a spiral casing with an increasing cross 
sectional area? 
1. rotary pump 
2. rotary gear pump 
3. rotary lobe pump 
4. reciprocating pump 
5. volute pump - Answer- 5. volute pump 
A clear line of sight to the flame is required by a(n): 
1. Flame scanner 
2. Thermopile 
3. Flame rod 
4. Thermocouple 
5. All of the above - Answer- 1. Flame scanner 
A ____ is installed to start a large diesel engine. 
1. electric...
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Lubrication Systems Questions and Correct Answers Latest Update, Graded A+
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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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Essentials of Fire Fighting 7- Chp 6, Section F Questions And Answers
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Class K rated portable fire extinguishers work because of: 
A. Cooling 
B. Smothering 
C. Saponification 
D. Chemical flame inhibition - C. Saponification 
Fires involving lubricating oils and liquefied petroleum gas (LPG) are classified as 
A. Class A 
B. Class B 
C. Class C 
D. Class D - B. Class B 
For which classification of fire do portable extinguisher ratings take into account the reactions between 
the metal and the agent? 
A. Class A 
B. Class B 
C. Class C 
D. Class D - D. Class D 
For...
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ABSA 4B EXAM QUIZ BANK | 1566 QUESTIONS | WITH ALL CORRECT SOLUTIONS
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ABSA 4B EXAM QUIZ BANK | 1566 QUESTIONS | WITH ALL CORRECT SOLUTIONS. 
 
Internal ____ is not required for dynamic type compressors. 
 
seals 
lubrication 
pressure monitoring 
corrosion monitoring 
temperature monitoring 
b 
Low pressure or high pressure are the two primary classifications of ____. 
 
centrifugal pumps 
sump pumps 
boilers 
draft fans 
pressure controllers 
e 
The boiler feedwater becomes increasingly ____ as it approaches the measurement of zero. 
 
acidic 
neutral 
softer 
ba...
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ABSA 4B Exam Questions with 100% Correct Answers 2024/2025
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ABSA 4B Exam Questions with 100% 
Correct Answers 2024/2025 
Which of the following pump designs has a spiral casing with an increasing cross sectional area? 
1. rotary pump 
2. rotary gear pump 
3. rotary lobe pump 
4. reciprocating pump 
5. volute pump - answer5. volute pump 
A clear line of sight to the flame is required by a(n): 
1. Flame scanner 
2. Thermopile 
3. Flame rod 
4. Thermocouple 
5. All of the above - answer1. Flame scanner 
A ____ is installed to start a large diesel engine. 
1...
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BECC MOD 2 questions with verified solutions 2023/2024
- Exam (elaborations) • 9 pages • 2023
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BECC MOD 2How long are engineering legal records retained on board for? - correct answer 3 Years 
 
How long are operating logs retained on board for? - correct answer 6 Months 
 
What is the record where all speed changes for each individual shaft are recorded? - correct answer Bell Log 
 
What is the log that provides the day to day record of events pertaining to the engineering plant? - correct answer Engineering Log 
 
(T/F) Erasure are allowed on logs? - correct answer False 
 
Which report...
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Industrial Mechanics Chapter 8 Completions Practice Questions and Answers
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ABSA 4B Exam Questions with 100% Correct Answers 2024/2025
- Exam (elaborations) • 231 pages • 2024
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ABSA 4B Exam Questions with 100% 
Correct Answers 2024/2025 
Which of the following pump designs has a spiral casing with an increasing cross sectional area? 
1. rotary pump 
2. rotary gear pump 
3. rotary lobe pump 
4. reciprocating pump 
5. volute pump - answer5. volute pump 
A clear line of sight to the flame is required by a(n): 
1. Flame scanner 
2. Thermopile 
3. Flame rod 
4. Thermocouple 
5. All of the above - answer1. Flame scanner 
A ____ is installed to start a large diesel engine. 
1...
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ABSA 4B EXAM QUIZ BANK | 1566 QUESTIONS | WITH ALL CORRECT SOLUTIONS
- Exam (elaborations) • 381 pages • 2024
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Propane 
Butane 
Ethane 
Methane 
All of the above -Answer-e 
Although ____ is created, high viscosity oils are still preferred for low speed/high load systems. 
lower floc point oils 
lower oil friction 
high pour point oils 
high velocity oils 
higher oil friction -Answer-e 
Every shift the boiler water should be ____. 
filled with dissolved solids 
tested 
condensed 
replaced 
evaporated -Answer-b 
Sodium sulphite is a commonly used ____ in boilers. 
oxygen scavenger 
carbon dioxide scavenger...
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Lubrication systems test 2023 with complete solution
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Lubrication systems test 2023 with complete solution 
Listfive functions ofthe oil in an engine lubrication system.: Cools, Cleans,seals and cushions, 
prevents corrosion, and reduce friction. 
2. The resistance of an oil to flow is known as its .: Viscosity. 
3. Oil that flows freely has a viscosity.: Low. 
4. The oil used in reciprocating engines has a relatively (high or low) 
viscosity.: High. 
5. The measure ofthe change in viscositywith a given change in temperatureis know as the 
.: Visco...
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