B.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Nautical Science
MARINE ENGINEERING AND CONTROL
SYSTEMS — II
(Upto 2015 Batch)
Time 3 Hours Maximum 75 Marks
Answer all questions.
x 15 75)
1. What is effect of carbon presence in steel?
List various types of heat treatment processes.
Or
Briefly describe the how steel is produced.
For what purpose are ceramics used.
2. List major auxiliaries in a ships engine room.
Where is compressed air used in a ships engine
room?
Or
Describe the working of a evaporation type fresh
water generator.
How does a hydrofore for sanitary water work?
Sub. Code
44
CP-8011
2
Ws5
3. With the aid of a line sketch describe the
functioning of a vapour compression refrigeration
system. Also mention the state of the refrigerant at
various stages.
List various types of pumps used in a ships engine
room. Also mention what type of pumps are used for
pumping fuel oil, lubricating oil and fresh water and
sea water.
Or
Briefly describe parts of a electro hydraulic type of
steering gear.
What are the emergency arrangements provided in
case of steering gear failure?
4. How are internal combustion engines broadly
classified?
Describe the four strokes of a four stroke engine and
the processes taking place in each stroke.
Or
What is dual fuel propulsion engine? What is its
relevance regarding pollution prevention?
What is exhaust gas turbo charging? What are its
advantages?
5. Describe how voltages are stepped up or stepped
down. Briefly describe the device which achieves
this information.
What is parallel running of generators?
Or
What are the protection devices provided in the
electric system and components?
Describe the function of a transformer. How is
voltage stepped up or stepped down?
————————