01
A raw water pump impeller has failed, shedding several blades. The engine is overheating. After replacing the impeller, what is the most probable location of the old impeller fragments?
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Topic
Marine Engine Theory (AEC2): Cooling Diagnostics revision questions
7 Marine Engine Theory (AEC2): Cooling Diagnostics questions sit in the Amidships bank, each written in plain English and explained rather than just marked. This page shows a sample you can work through right now. The topic appears in AEC Marine Engine.
- Questions in the bank
- 7Questions in the bank
- Subtopics
- 1Subtopic breakdowns
- Exam levels
- 1Exam levels covered
Sample questions
Answer in your head first, then reveal. If the explanation surprises you, that is the topic to drill.
02
An engine is running hotter than normal. The raw water system is confirmed to be working correctly. What is the standard method for testing a suspect thermostat?
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03
The pressure cap on a freshwater header tank is persistently releasing steam and coolant when the engine is under load. What is the most likely underlying cause?
exam standard
How this topic is examined
The bank splits Marine Engine Theory (AEC2): Cooling Diagnostics across 0 recall questions, 0 applied questions and 0 harder judgement questions. Recall gets you the marks you cannot afford to drop; the applied and judgement questions are where candidates lose the exam. Work the recall until it is automatic, then spend your time on the rest.
Practise this properly
Reading is not revision. Answer questions, get them wrong, read the explanation and meet them again. Amidships tracks readiness topic by topic so you know where you stand.