161.
162.
Question Sr 9 2009, Sr 12 2007, Sr 8, 7 2007, Oct Sr 8 2006
Sketch a Jacket water cooling system.
State why chemical treatment of the J.C. W. is nccessary.
What test are carried out
163.
164.
Question Sr 9 2009, Sr 12 2007, Sr 8, 7 2007, Sr No 2 2005
Describe the crankcase inspectionot an auxilhary cngine drivng an alternator, under cach
of the following headings
(a) Safety
(6) Timing gears
(c) Running gcars
(d) Oil pipes and system
165.
166.
Question Sr9 2009, Sept 2006
when are tappet ckearances taken in a 4 stroke dicscl generator enginc?
What will be the effect of the following on engine performance?
Too large clearuncess
Too small clearances
What are the other routincs carricd out on auxiliary cngincs and after what time period?
167.
168.
Qucstion Sr 9 2009, Sr 3 2009, Sr 11, 10, 6, 4 2008, Sr 12 2007, Sr 5 2006
Write bricf notes on the adversc cffcct that a fucl containing high valucs of the following
ay cause
V ISCOSty
Density
Sulphur
Conradson carbon residuc
Ashphaltenses
Vanadium and sodiumn
sh
169.
170.
Question Sr 9 2009, Sr2 2009, Sr l11, 10, 6 2008
Make a report to the C/E of your vessel about malfunctioning of low lubricating oil
pressurc akarm for the main enginc obscrvcd during your watch.
71.
172.
Qucstion Sr 9 2009, Sr 8 2006, Scpt 2006
Explain the reasons for starting air line cxplosion.
What preventive maintenance is requircd to avoid the samc?
173.
174
Qucstion Sr 9 2009, Sr 10 2005
Sketch a water-cooled piston showing the direction of coolant flow.
Show in details the location and nature of the water scals.
Describc how the coolant is conveycd to and from the piston.
Explain how it s cnsurcd that the erown reccives an adequate supply of coolant
175.
176
Question Sr 8 2009, Sept 2006
With reference to turbochargers explain:
Why air cookrs are fitted?
Why excessive cooling of air should be avoided?
How turbine glands are sealed?
How bearings are lubricated?
77.
78.
Question Sr 8 2009,
Compare the functions & characteristics of lubricants for:
Cylinder liner
Large slow specd engine crankcase
Small high speed engine crankcase
lurbochargers bearing
179.
80.
Question Sr 8 2009, Sr 4 2009, Sr 8 2008,
Sketch a block diagram showing a bridge control system for propeller pítch engine speed
and load
Describe the operation of the system sketched
What are the requirement to be fulfilled on an UMS classed vessel for operating “un-
manned engine room watch”
