Q2. State with reasons, how cracking in EACH of the following location is caused, rectified and avoided
a. “A”-frame. b. Bedplate longitudinal girder. c. Bed plate transverse girder.
Q3. Damage has occurred to the main engine valves and the fuel supplied at a particular port is suspected. The owner’s case, however, in the subsequent dispute may be weak because the fuel was ordered specifying only type and viscosity.
A. Apart from fuel specification, describe how you, as Second Engineer, should have assisted the owners’ case when receiving the suspect fuel.
B. Describe the ISO fuel standard that is to be used when ordering bunker fuel.
C. Explain how the correct fuel standard is selected.
D. Suggest, with reasons, why particular mention should be made of certain elements that might not be included in the fuel standard.
Q8. a) Explain why pilot injection is required for a Dual fuel engine when burning natural gas. (8)
b) Describe, with the aid of a sketch, the arrangements for a dual fuel engine which is capable of burning natural gas on
a) The Otto cycle.
b) The Diesel cycle. (8)
Q5. a) How is the power to weight ratio of an engine sought to be increased by continuous development? (8)
b) Discuss the limiting factors, what is the typical power to weight ratio of a slow speed marine diesel engine of current generation? (8)
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