DieselShip's Online Content Library

Q1. a) Describe various types of valves used in Engine room. State reasons for their use particular type of valves. (8)

b) Describe Materials used for different parts of each design. (8)

Q2. Describe safety precautions with gas cutting/welding equipments.

a) For storage of gas cylinders. (8)

b) Transportation on ship for working. (4)

c) During gas cutting & welding operation. (4)

Q3. Describe following metal finishing processes and objectives:

a) Honing (4)

b) Lapping (4)

c) Polishing (4)

d) Buffing (4)

Q4. a) Describe procedure for safe Isolation of Centrifugal Pump prior maintenance work. (6)

b) Describe in detail routine maintenance carried out on the pumps. (10)

Q5. a) Describe shell and tube type heat exchanger and its function with the aid of a diagrammatic sketch, naming each part. (8)

b) Describe the physical cleaning procedure of cleaning tubes. (4)

c) Describe the Chemical cleaning of the shell side of the heat exchanger. (4)

Q6. a) Describe the hazards while working on electrical machinery. (4)

b) What is Lock out / Tag out system used for safety operation on electrical machinery. (8)

c) Describe machineries where Lock out / Tag out system will prevent accident. (4)

Q7. a) Describe following terms used for pumps,

i) Flow Rate. (2)

ii) Pressure. (2)

iii) Head. (2)

iv) Net Positive Suction Head. (2)

b) During watch keeping round what checks are required on a running centrifugal pump? (8)

Q8. a) Describe what is Slipping of Crank web and its effect on main engine. (4)

b) What actions are required if crank web slipping has occurred? (4)

c) Describe reasons for Slipping of web on the journal. (4)

d) Describe precautions against prevention of slipping crank web and journal. (4)

Q9. a) Describe maintenance to be carried out on safety valve of Auxiliary Boiler to keep them in good order.

b) Describe procedure for setting safety valve. (6)