DieselShip's Online Content Library

Q1. a) Describe principle of arc welding, with diagrams. (6)

b) Describe equipment used in arc welding. (6)

c) Describe health hazards and precautions to be taken. (4)

Q2. Describe the following properties of steel and which components are most considered with advantages & disadvantages.

a) Ductility (4)

b) hardness (4)

c) Malleability (4)

d) Toughness (4)

Q3. Describe materials used with composition and reasons for use with following components of Diesel Engine Plant:

a) Gudgeon pins and connecting rod bolts. (4)

b) Gear Wheels (4)

c) Upper Piston Parts. (4)

d) Fuel Nozzles. (4)

Q4. a) Describe how leak in leaky tube in Heat exchanger is detected? How to rectify leaky tube? (8)

b) Describe how division plate on the inlet and outlet end is detected? (4)

c) Describe reasons for poor performance of heat exchanger and action to rectify the same. (4)

Q5. a) Describe onboard main Air Compressor maintenance schedule. (8)

b) Describe malfunctions observed on Main Air Compressor. (8)

Q6. a) Describe all parts of Gear Pump. Explain how pumping is carried out by gear pump? (8)

b) By suitable drawing describe what is BACK LASH, it's importance. How BACK LASH is measured? (4)

c) What checks will be carried out during overhauls. (4)

Q7. a) How leaks are detected and rectified on refrigerating plant? (4)

b) Describe how Suction & Discharge valve are tested for tightness? (4)

c) Describe how refrigerant charging is carried out? (8)

Q8. a) Describe by drawing a suitable diagram, Bilge water System of an ocean-going ship. Name each part/equipment with its function. (10)

b) Describe problems associated with Bilge water system and their solutions. (6)

Q8. (a) Describe maintenance required on auxiliary boiler burner. (8)
(b) Describe safety features provided on fuel burning system of auxiliary boiler (8)

Q1. (a) Under which all circumstances, drydocking of a vessel is required. (8)

(b) What all repair and maintenance works are expected to be carried out in Dry Dock? (8)

Q2. (a) Describe with suitable schematic diagrams inspections and checks to be conducted on Tail Shaft, highlighting areas to be attended. (10)

(b) Describe the procedure for repair in way of shaft CONICAL AREA. (6)

Q3. a) Describe 2 stroke Main Engine cylinder liner diameter measuring procedure. (8)

b) What is the modern system for liner Diameter Measurement? (4)

c) What are the advantages of modern system over old system? (4)

Q4. a) What is non-destructive testing? What are non-destructive methods used in practice? (6)

b) What are the advantages of non-destructive testing? (6)

c) What are limitations of non-destructive testing (4)

Q3. Describe following metal finishing processes and objectives:

a) Honing (4)

b) Lapping (4)

c) Polishing (4)

d) Buffing (4)

Q6. a) What is the principle of gas cutting? (4)

b) Describe how gas cutting is carried out with Oxygen and Acetylene flame? (8)

c) State the pressure levels for Acetylene & Oxy cylinders for gas cutting operations. (4)

Q7.a) Describe uses of packed gland seal, which all machinery they are in use? In a running pump, how the gland packing is lubricated and kept cool? (6)

b) Describe advantages of using gland packing. (5)

c) Describe disadvantages of using gland packing. (5)

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)

Q9. With reference to centrifuges

a) How is the vertical Height is measured and why vertical Height of the spindle is so critical? (6)

b) Describe the troubles occurring on centrifuges during their operation and their rectification procedure. (10)