1. a) Briefly explain the Concept of Integrated
Bilge Water Treatment System (IBTS). [4
Marks]
b) Sketch and
describe a Pre-treatment unit for oil separation which can be used incorporated with IBTS [4 Marks]
c) State the
definition of “Oil residue sludge)” [3
Marks]
d)
Draw a flow diagram of oil residue (sludge) collection and disposal
arrangement which can be used incorporated with IBTS [5 Marks]
2. a) 1) List the safety devices fitted
on fuel-oil settling tanks, daily service tanks. 2) State the reasons for
fitting such safety devices. marks]
3) State what attention
requires for above safety devices. [2 marks]
b) Describe with aid of a sketch a fuel oil
supply line to a 2-Stroke Cross head type
Marine Diesel Engine indicating the safety devices, position and type of
valves were fitted to ensure satisfactory operations of the fuel oil supply
system. [6marks]
c) State the routine
maintenance and inspections on above (b) mentioned fuel oil supply system to
avoid/control any flammable oil spillage. [6
marks]
3. a) State how is the capacity of an
air compressor specified [2 Marks]
b) Describe with an aid of a line
diagram, the compression process of a two-stage air compressor indicating each
stage air pressure and temperature.
[3
Marks]
c) Describe how is the running
gear of reciprocating air compressors lubricated [3 Marks]
d) Describe the bearing
replacement procedure of a two-stage air compressor mentioning the necessary
inspections and calibrations of its components. [8
Marks]
4. a) Briefly explain with the aid of
sketches, the control mechanism of following Electronic Control Equipment;
1) A digital sequential control
device [3 Marks]
2) An integrated Automation
Control and Monitoring System (IACMS) [3 Marks]
3) A Computer programmable [3
Marks]
b) State how Electronic control
equipment cited above (a) are utilized for main and auxiliary machineries [3
Marks]
c) Draw and explain a flow chart
indicating automatic control system for main engine or generator control
system. [4
Marks]
5.
a) Briefly discuss the effects
of Ozone Depletion substances on human health and environmental. [2 marks]
b) Explain how to collect the
refrigerant into a recovery bottle form a refrigerator plant
[3 Marks]
c) State how make the following
leak tests for a refrigerator plant;
1) Pressure test [2 Marks]
2) Vacuum test [2
Marks]
d) Explain how to charge
refrigerant into a refrigerator plant [3
Marks]
e) 1) State the preparation and precautions
for starting a refrigerator plant
[2 Marks]
2) State how operating
condition of a refrigerator unit is identified in a good working order. [2
Marks]
6. a) Define followings, for an elastic
material subjected to a tensile load;
1) elastic limit [1
Mark]
2) yield point [1
Mark]
3) breaking strength [1 Mark]
b) State how vibration is caused
on the elastic materials [3 Marks]
c) Describe the main sources of
ship vibration 5 Marks]
d) Explain how ship vibration
may be reduced. [5
Marks]
7. With reference
to a hydraulic system, suitable for the operation of deck machinery.
a) Sketch a line diagram
showing the layout and components [8 Marks]
b) Describe the operation of
the system sketched in above (a) [8
Marks]
Section-B
8. a) name the materials commonly used
for the following part of cables.
1) Conductors
[1 Mark]
2) Insulation [1
Mark]
3) Sheathing [1 Mark]
b) Explain the following electrical
diagrams
1) Block Diagram
[2 Marks]
2) System Diagram [2
Marks]
3) Circuit Diagram
[2 Marks]
4) Wiring Diagram
[2 Marks]
c) Sketch a circuit diagram for the
following wiring diagram [5
Marks]
9 a) Explain the following
characteristics of semiconductors
1) photoelectric
effect [2 Marks]
2) thermoelectric
effect
[ 2 Marks]
3) Communicating action [2
Marks]
4) hall
effect
[2 Marks]
b) 1) Define Integrated Circuit
(IC) and Large Scale Integrated Circuit (LSI) as circuit elements
[2 Marks]
2) Describe the structure of
an IC
[3 Marks]
3) Describe briefly the
functions of the following types of IC Complementary Metal-Oxide Semiconductor
(CMOS)
[3 Marks]
Section-C
10. a) 1) Define
the propeller singing [2
Marks]
2) Explain generation mechanism of
propeller singing and preventive measures. [2 Marks]
b) Describe with aid of sketches, a controllable
pitch propeller (CPP) and its mechanism of changing blade Angle [ 6 Marks]
c) Explain how propellers fit on
propeller shaft. [6 Marks]
11. Explain how
external hull corrosion is inhibited by EACH of the following.
a) Design and maintenance. [6 Marks]
b) Impressed current system. protection. [5 Marks]
c) Cathode [5 Marks]
