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Q1. Draw cooling water system of main engine and naming each component and describe flow of cooling water through the system. (16)

Q3. Describe following procedures for rudder maintenance in a dry dock.

a) What is Jumping Clearance and why is it considered a valve of importance? (8)

b) What is Rudder Drop and describe the procedure for measuring the rudder drop? (8)

Q4. Describe the following non-destructive test methods:

a) Dye penetration test principle, and method in details. (8)

b) Magnetic particle testing principle and method in detail. (8)

Q5. a) Describe types of arc welding processes. (8)

b) Describe what level of temperatures are reached during arc welding. (4)

c) Describe precautions taken to avoid health and shock hazards during welding. (4)

Q6. A Centrifugal pump has been opened up due to abnormal noise:

a) List the checks you will carry out on various parts (4)

b) Name the parts which may require replacement. (4)

c) Checks to be carried out after assembly. (4)

d) Operational parameters, which may be required to be compared with manufacturers test records. (4)

Q7.a) Describe how A. E, crankshaft deflections are measured. (6)

b) State how the measurements can be checked for accuracy. (5)

c) Specify with reasons other checks that should be made on the crankshaft. (5)

Q8. a) Describe the working of a Mechanical Shaft seal with a diagram. How working fluid leak is prevented? (8)

b) What are causes of Mechanical shaft seal failure? (4)

c) Describe for Mechanical shaft seal usage

i) Advantages (2)

ii) Disadvantages (2)

Q9. With reference to lifeboats and davits describe (a & b) with the aid of sketches:

a) The purpose and types of “limits switches”. (6)

b) The centrifugal brake and state the method of testing. (5)

c) Enumerate routine maintenance of lifeboat engine & life boat winch. (5)