Exam Question
(a) Explain briefly how the different moving parts of a main engine are subjected to various stresses. (8)
(b) Name the stresses and justify by stating how they originate. (8)
Class 4 (4th Engineer)
MEKM
📅 Feb 2026
Reference Answer
### **Analysis of Stresses in Main Engine Moving Parts**
A marine diesel engine's moving parts are subjected to complex and cyclical loads originating from three primary sources: Gas Pressure, Inertia Forces, and Thermal Loading. These loads induce various stresses which the components must be designed to withstand.
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#### **1. Crankshaft**
A marine diesel engine's moving parts are subjected to complex and cyclical loads originating from three primary sources: Gas Pressure, Inertia Forces, and Thermal Loading. These loads induce various stresses which the components must be designed to withstand.
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#### **1. Crankshaft**
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