1.
Which is true?
a. Rotary
vane steering gear generally operates at high oil pressure than RAM type
b.
RT
> RV
c.
RT=RV
d. None
of the above
2.
Which part of the liner wear due to
catalytic fines in fuel
a.
Upper
part
3.
Besides raising the liner wall
temperature to sulphur corrosion
a. Increase
cylinder feed
b. Increase
scavenge air temperature
c.
Improved separation of water
d.
All
the above
4.
Functions of attemprator
a. Increase
boiler feed water temperature
b.
Decrease
super heated steam out temp and protect secondary stage superheat
c.
Control super heat steam out
temp and protect secondary stage superheat
d. Increase
the combustion air temperature
5.
Resin chokes
a. Better
vibration damping
b. Better
compressive strength
c.
Unaffected
by fuel oil and sea water chemicals
d. None
of the above.
6. Exhaust grouping in main engine
a. Better
starting
b. No
need for auxiliary blowers
c.
Pure prime
7.
No change in speed in governor
a. Fine
b. Coarse
c.
Isochronous
d. Unichronous
8. Crank case ventilation for function
as
a. Prevent acc. Of combustion gases
b.
Temp. links oil loading
9. In a fully built or semi built type
crankshaft, how can any slippage at shrink fit be identified?
A.
By inspecting the locking arrangement provided
B.
By checking the dowel provided.
C. By checking the witness mark provided
for reference .
D.
By checking the performance of the engine
10. The flow rate
through a F.O. transfer pump will not be affected by which of the following
factors?
A.
Low F.O. temperature
B.
Low sounding in F.O. tank
C.
Internal leakage within the pump
D. Leaking discharge valve
11. The use of ball and roller bearings in
internal combustion engines is becoming more and more popular for some or all
of the following
(a) The low coefficient of friction
(b) The absence of wear under favorable conditions
(c) The independence in lubrication
(d) The extreme reliability of such bearings
(a) The low coefficient of friction
(b) The absence of wear under favorable conditions
(c) The independence in lubrication
(d) The extreme reliability of such bearings
12. 2 stroke exhaust valve rotates by
a.
rotocap
b. vanes
13.Sulphur and vanadium in F.O
A.Hot corrosion
B.Cold
corrosion
C.Caustic
corrosion
D.Acidic
corrosion
14.Cyl liner material
A.Cast iron
B.cast
steel
15. As per
regulations, the velocity capacity of a steering gear system should be such so
as to be able to turn the rudder__________________________
A.
35 degrees one side to 35 degrees on the other side, in 28 seconds at maximum
service speed
B. 35 degrees one side to 30 degrees on the
other side in 28 seconds at maximum service speed
C.
35 degrees one side to 35 degrees on the other side, in 28 seconds at normal
service speed
D.
35 degrees one side to 30 degrees on the other side, in 28 seconds at normal
service speed
16. Governor
paralleling for generators requires
A.Fine droop/some droop
B.No
droop
C.course
droop
17.In diesel generator,
increasing the fuel due to drop in load , which will --------------------save
machine from damage
A.Limiting load switch
B.Limiting
shredded switch
C.Limiting
<<>> sensor
D.Limiting
<<>>
18.In 2s,getting normal
combustion pr. But reduced in max pr. Due to
A.faulty fuel injection timing
B.exh.
valve leaking
C.Piston
rings faulty
19.TBN value of cyl oil
is too high to sulphur content in fuel oil
A.Alkalinity corrosion
B.Not
a problem
20. Efficiency of
constant pressure T/C is _______ than pulse type T/K
A.less
B.Equal
C.slightly
more
D.Very high
21.Thrust block
bearings
A.Tilted <<>>
B.Flat
pad
C.Roller
D.Ball
bearing
23.Shims are added to
the fuel pump
A.retarding
injection
B.Advancing injection
25.Use of economizer
A.to
reduce exh. Gas temp. so that NOx will reduce
B.To
reduce Sox
C.To increase the efficiency of propulsion
unit
26. when A/E stand by F.O.heater in use of
main engine
a.
Sudden opening F.O. inlet valve pressurized and damage the heater
b.
F.O. in vapour lock inside heater allow steam
c. F.O. inlet valve causes pressure drop
M/E F.O. pressure standby water is not pressurized may cause sudden change in
engine /per load/rpm
d.
heater leaking.
1.
Temperature at which hazing of oil
is called
i.
Haze
point
ii.
Cloud point
iii.
Floc point
2.
Operating pressure of which type is
greater?
i.
Ram
type
ii.
Rotary vane
iii.
Both are almost same
iv.
None of them
3.
Which steering gear type is electro
hydraulic?
i.
Ram type
ii.
Rotary type
iii.
Both
iv.
None
4.
Sealing arrangement of T/C of Main
engine.
i.
Compressed air with 30 bar
ii.
Control air
iii.
Air comes
directly from compressor of T/C.
5.
when cross head bearing of a large
2 stroke marine engine on a cargo ship is opened up for survey is mandatory for
the cross head to be inspected by the
i.
port state inspector
ii.
cargo gear surveyor
iii.
ISM auditor
iv.
Attending workshop superintendant
6.
The temperature, at which a fuel will
start to burn under given conditions, is called its, ignition temperature. This
temperature varies greatly with
(a)
Composition of the air-fuel mixture.
(b)
Amount of excess air.
(c)
Size, shape and temperature of the compression space.
(d) All the above
7.
VESSEL IS AT DRYDOCK , WHO ISSUE
HOT WORK PERMIT…???
I.
Options were CE
II.
2E
III.
shipyard engineer
IV.
Ship superintendant.
8. Following method is
sometimes used in constant pressure turbochargers of a 4-stroke diesel alternators
during starting and rapid acceleration:
A.
Auxiliary electrical blowers assisting turbochargers during starting
B.
Auxiliary shaft driven blowers assisting turbochargers during starting
C.
Auxiliary air drive for turbocharger acceleration during starting
D. Variable geometry turbocharging
9. Automatic combustion
control systems for some auxiliary boilers are designed to cycle burners on in
response to
I. A. low fuel pressure
II. B. fuel return pressure
III. C.
low steam pressure
IV. D. furnace air pressure
10. A normal manometer
reading of turbocharger air suction filter and normal speed of the turbocharger
but reduced scavenge air pressure may be due to:
A.
Fouling of the nozzle ring
B.
Fouling of diffuser or compressor wheel
C.
Fouling of the turbine
D. Cold climate
11. Abnormal wear
occurring in engines due to localized welding and fracture is known as
A.
Scoring
B. Scuffing
C.
Peeling
D.
None of the above
12. The bearings used
to support the crankshaft are generally called
A.
line shaft bearings
B.
connecting rod bearings
C. main bearings
D.
support bearings
13.Which of the
following statements is true?
A.
A fuel with high cetane index has longer ignition lag and is associated with
better combustion.
B. A fuel with high cetane index has
shorter ignition lag and is associated with better combustion.
C.
A fuel with low cetane index has longer ignition lag and is associated with
better combustion.
D.
A fuel with low cetane index has shorter ignition lag and is associated with
better combustion
14.The flame safeguard
control system of a large automatic auxiliary boiler will provide fuel shut off
in the case of high
A.
water
B.
voltage
C.
fuel pressure
D. steam pressure
15. What prevents
rotation and fretting between a thin shell bearing and its housing ?
A.
Location tangs or pegs
B. The nip or crush of the bearing
C.
A special kind of adhesive
D.
Any of the above
16.Which of the
following can be a consequence of worn scraper rings and sealing rings of a
piston rod stuffing box?
A.
Increased risk of scavenge fire
B. Increased risk of crankcase explosion
C.
Increased Lube oil consumption
D.
All of the above
17. Which of the
following types of crankshafts is much lighter at similar power requirements?
A.
Fully built type
B. Semi built, all welded type
C.
Semi built type
D.
Solid forged type
18. Which of the
following types of scavenging systems is most popular in modern engines?
A.
Loop scavenging
B.
Cross flow scavenging
C. Uniflow scavenging
D.
Reverse scavenging
19. Steam temperature
control for the ESD boiler is achieved by :
A.
Fitting a de-superheater between 1st & 2nd passes of superheater
B. Fitting an attemperator between 1st
& 2nd passes of superheater
C.
Bypassing the superheater
D.
Gas dampers in boiler uptake
20. Which of the
following statements is true?
A. The TBN value of cylinder oil should be
ideally matched with the sulfur content of the fuel.
B.
The TBN value of cylinder oil is not a function of the sulfur content of fuel
oil.
C.
Cylinder oils with higher TBN values should be used for fuel oils with lower
sulfur content.
D.
The TBN value of cylinder oil is a function of maximum combustion pressure.
21. The super long
stroke slow speed 2-stroke diesel engines when compared to short stroke version
gives:
A.
Poorer propulsive efficiency but better fuel combustion
B.
Better propulsive efficiency but poorer fuel combustion
C. Better propulsive efficiency as well as
better fuel combustion
D.
Poorer propulsive efficiency as well as poorer fuel combustion
22. Coked material
remaining after an oil has been exposed to high temperature, is an indication
of the coke forming tendency of the oil. It can be expressed as
A. Conradson
B.
Ramsbottom
C.
Micro Carbon Residue(MCR)
D.
Any of the above
23. The purpose of
valve spindle rotators in case of exhaust valves of modern two stroke engines
is to:
A.
Improve engine efficiency by allowing even temperature distribution through the
combustion chamber
B. Allow even temperature distribution
along the disc of the valve spindle, even wear rate and removal of any deposits
C.
Utilising waste energy in the exhaust gases to increase the engine efficiency
D.
Allow exhaust gases to exit in a rotational motion, inducing good draught of
scavenge air for better mixing of air and fuel for effective combustion
24.In modern 2-stroke
marine diesel engines the exhaust valves are:
A.
Mechanically actuated
B.
Pneumatically actuated
C. Hydraulically actuated
D.
Electrically actuated
25.Which of the
following is a proper practice to follow in the event of discovery of a small
soot fire in exhaust gas boilers?
A.
Repeated soot blowing
B.
Stopping cooling water circulation
C. Reducing main engine speed
D.
Opening the inspection doors and extinguishing the fire
26. An additive added
to a lubricant to keep engine parts clean is known as ______________
A.
Dispersant
B. Detergent
C.
Cleaning agent
D.
None of the above
27. The scavenge ports
of a uniflow scavenged 2-stroke engine cylinder liner are machined at an
oblique angle to the axis of the cylinder, why ?
A.
To prevent exhaust gases from coming out of scavenge ports
B.
To allow rotary motion to scavenge air to reduce exhaust gas temperature for
reduced NOx emission
C. To allow rotary motion to scavenge air
for better scavenging and better air-fuel mixing
D.
To allow rotary motion to scavenge air for better cylinder oil distribution on
the liner walls and better turbocharger performance
28. Both power units of
a steering gear system need to be switched on ______________
A.
When the ship is within 12 nautical miles from shore.
B.
When pilot is on board
C.
When navigational circumstances demand caution
D. ALL
29. The kinetic energy
imparted to air by the compressor impeller of a turbocharger is converted into
pressure energy at the:
A.
Nozzle ring
B. Diffuser ring
C.
Inducer ring
D.
None of the above
30. Which of the
following is one of the disadvantages of cast iron chokes, used in holding down
arrangement of engines?
A.
Poor compressive strength
B.
Poor vibration damping
C. Cast iron is brittle and prone to crack
D.
All of the above
31.Economisers are
built up with
A.
Copper tubes
B.
Plain steel tubes
C. Stainless steel tubes
D.
Steel tubes fitted with shrunk on C.I. grills
32. Which of the
following is the primary advantage of supercharging the air quantity in a
diesel engine, by means of a turbocharger?
A. It leads to
considerable gain in thermal efficiency.
B. It increases the
maximum pressure generated in a cylinder appreciably.
C. It improves the power
to weight ratio of the engine
D. All of the above.
33. Only a pre
determined fixed amount of water should be used during:
A.
Water washing of the turbine side of a turbocharger
B. Water washing of the blower side of a
turbocharger
C.
Water washing of both blower and turbine sides of a turbocharger.
D.
Exhaust gas boiler water washing.
34. A non water-cooled
turbocharger offers which of the following advantages?
A.
More heat is available for waste heat boilers
B.
Corrosion problems of internal surfaces due to formation of sulfuric acid are
eliminated
C.
Improved thermal efficiency of turbocharger
D. All of the above.
35. Too high Calculated
Carbon Aromaticity index (CCAI) of fuel oil indicates:
A.
Reduced ignition delay
B. Increased ignition delay
C.
Reduced chances of knocking
D.
None
36. high tensile steels
are
a)
high carbon steels with suitably added alloying elements
b)
medium carbon steels with suitably added alloying elements
c) low carbon steels with suitably added
alloying elements
d)
none of the above
37. Which of the
following is a corrosive type of wear of a cylinder liner?
A.
Scuffing
B.
Scoring
C. Clover- leafing
D.
None of the above
38. The common term used for failure of metal and
alloys in a corrosive environment , when subject to high stresses is known as :
A.
Fatigue failure
B.
Corrosion fatigue
C.
Stress corrosion
cracking
D.
Fretting corrosion
39. The steels with a
carbon percentage close to 0.8% have
A.
poor strength but good weldability
B. High strength but poor weldability
C.
Poor strength and poor weldablity
D.
High strength and good weldability
40. The maximum
pressure a centrifugal pump can generate is called:
A. Shutoff head
B.
Total dynamic head
C.
Total head
41. what type of tanks
in pressurized gas carrier
1.A
2.B
3.C
4.D
42. The purpose of
economiser is to:
- Decrease
the capacity and size of the auxiliary boiler
- Cooling
down the exhaust gases in order to reduce NOx emission
- Allowing
Sox to react at low temperatures with water to form acids thus reducing
Sox emission
- Increasing the overall efficiency of
the main propulsion plant
43. The fuel pumps used in modern intelligent engines:
A. Deliver to a common rail
B. Are hydraulically operated
C. Are valve operated
D. Either A or B
44. When fuel is
injected late into a diesel engine cylinder,
a)the
exhaust will be clear
b)fuel
consumption will be low
c)all
the fuel will be burned at top dead center
d)fuel consumption will be high
The direction of flow of cooling
water in an engine is always _________.
A.
From top to bottom
B. From bottom to top
C.
From left to righ
D.
From right to left
In Chain drives, chain damage can
take place:
A.
Only if the chain is too tight
B. Only if the chain is too slack
C.
If the chain is too tight or too slack
D.
None of the above
Which of the following is an
important factor in hydrodynamic lubrication?
A.
Viscosity of the lubricating oil.
B.
Relative speed between lubricated surfaces.
C.
Bearing clearance
D. All of the above.
The purpose of downcomers in a
water tube boiler is :
A.
To allow the steam to rise to the steam drum
B. To allow cold water to sink to the
bottom
C.
To protect the fire wall tubes
D.
They are one type of generating tubes
Which
of the following reduce fatigue endurance limit in engine components?
A.
Surface flaws
B. Stress raisers like oil holes, change in
sections etc
C.
Corrosive environment
D.
All of the above.