
Lubricating system wrong and mixed
Authored by Миленна Кара
Specialty, Special Education
Professional Development
Used 6+ times

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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Most of the world’s deep sea trading vessels are powered by:
High speed four stroke engines
Steam turbines
Medium speed 4 stroke engines
Slow speed two stroke engines
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the cross head bearing on two stroke diesel engine is difficult to lubricate?
Water can get through from the rudder
The connecting rod stops adequate lubrication reaching the surfaces
Oscillating movement prevents a dynamic oil film being formed
It is very large and heavy
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How fast does a slow speed 2 stroke engine go?
10-30 rpm
500-800 rpm
30-50 rpm
18-300 rpm
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary fuel source for most deep sea trading vessels?
Electricity
Coal
Diesel
LNG
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
At what speed does a medium speed 4 stroke engine typically operate?
100-300 rpm
500-800 rpm
30-50 rpm
10-20 rpm
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main challenge in lubricating the cross head bearing on a two stroke diesel engine?
Water ingress from the propeller
The large size and weight of the bearing
Oscillating movement preventing proper oil film formation
Excessive heat generation
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of the cooling system on a ship's engine?
Generate electricity
Regulate fuel consumption
Remove excess heat from the engine
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