1) According to ISO 8217 : 2010
CCAI lower limit
a) 350 upper
b) 350 lower
c) 370 upper
d)
370 lower
2) Purpose of anti-polishing
a)
Liner cleaning
b) Used below the piston ring to
reduce cylinder oil feed
3) At what stroke 4 stoke
gudgeon pin is lubricated
a) Suction and compression
stroke
b) Suction and exhaust stroke
c) …
d)
All stroke
4) Another name of auto back
wash filter
a)
Hot filter
b) Strainer
c) Separator
d) Cold filter
5) F.O having CCAI no. less than
870
a)
Good
b) Excellent
c) Bad
d) Very bad
6) What does grease property
number indicates
a)
Fluid or non fluid
b) Load bearing capacity
c) …
d) …
7) Crank pin lubrication in MAN
B & W engine
a)
Telescopic pipe
b) Drilled bore in crankshaft
c) …
d) …
8) Exhaust valve hydraulically
operated and closed by = valve air spring
9) Comparison between piston
ring and cylinder linear material with respect to hardness
a) Same
b)
Higher
c) Lower
d) …
10) What is the % of bore
diameter with linear wear per 1000hrs
a) 0.01
b) 0.02
c)
0.1
d) 0.2
11) Effective stroke of constant
pr. T/C ________ than the same size pulse T/C
a) Very short
b) Shorter
c)
Longer
d) Not related. Shorter or
longer
12) Transverse girder support
what kind of bearing
a) Saddle bearing
b) Pedestal bearing
c)
Main bearing
d) Thickshell bearing
13) Main bearing load transfer to
bed plate
a)
Saddle bearing
b) Underslung
c) Pedestal bearing
d) Thickshell bearing
14) In which type of engine oil
control ring is used
a) 2 stroke
b) 4 stroke
c) Both
d)
Splash lubricated trunk type
15) Reason for increases in
clearance between rocker arm and push rod
a) Valve seat worn out
b)
Presence of dirt
c) Both
d) …
16) ESD stands for= external superheat D-type
17) Extreme additive oil used in=gear oil
18) How cross head lubrication
takes place
a) Cavity form
b) Permanent cavity
c) Viscosity increased
d) Molecular layer
19) What is the function of
piston ring coating
a)
To prevent scuffing
b)
To prevent corrosion
c) To prevent bedding
d) All of the above
20) Purpose of piston ring
coating
a)
For running in
b)
Corrosion resistance
c) Stress failure
d) None of the above
21) During running in period L.O
doses between piston and liner
a)
Increases
b) Decreases
c) Same
d) None of the above
22) Grease semi solid to liquid
a)
Drop point
b) Flow point
c) …
d) …
23) Which kind of F.O is required
in SECA areas
a) SAE 30 , TBN 60
b)
SAE 40 , TBN 50
c) SAE 30 , TBN 70
d) SAE 40 , TBN 60
24) sCrosshead bearing material= tin-Al-white metal thin shell
bearing
25) Which type of lubrication
takes place between piston ring and liner
a) Hydrodynamic lubrication
b)
Boundary lubrication
c) Elasto hydrodynamic
lubrication
d) None of the above
26) Which type of lubrication
takes place between pin and bearing
a)
Hydrodynamic lubrication
b) Hydrostatic lubrication
c) Elasto hydrodynamic
lubrication
d) None of the above
27) Main bearing lubrication
a)
Hydrodynamic lubrication
b) Elasto hydrodynamic
lubrication
c) …
d) …
28) Crosshead lubrication
a) Elasto hydrodynamic
lubrication
b)
Boundary lubrication
c) …hydrostatic
d) …hydrodynamic
29) When 2 surfaces are rubbing
each other, which type of lubrication takes place
a)
Wedge lubrication
b) Splash lubrication
c) …
d) …
30) When to carry out polishing
of liner
a) As recommended by manufacturer
b) Reconditioned
c) When wear takes place
d) …mirror finish occur
31) How saddle bearing is
supported
a)
Transverse girder
b) Longitudinal girder
c) Bed plate
d) None of the above
32) Viscosity index of cylinder
lube oil
a) 50
b) 70
c) >75
d) >95
33) Flash point of cylinder lube
oil
a) >150
b)
>200
c) >50
d) >100
34) Pig iron manufacture_________
process __________furnace
a) Forging , cupula
b) ……….. , puddling
c)
Smelting , blast furnace
d) ….
35) Mitsui bishi 2 stroke crank
pin lubrication
a) Swinging arm
b)
Telescopic pipe
c) …drilled passage
d) None of the above
36) In T/C bearing how is roller
bearing fitted
a)
Leaf spring b/w bearing and bearing
housing
b) Rubber pad b/w bearing and
bearing housing
c) Coil spring b/w bearing and
bearing housing
d) Casing
37) Injector temp. is the
function of
a)
Viscosity
b) Ignition
c) Specific gravity
d) All of the above
38) F.O high pr. Pipe to be
protected from vibration using
a)
Flexible non metallic material
b) Aluminium with expansion ends
c) Welded Flange joints
d) ….
39) Insufficient axial thickness
of piston ring may cause
a)
Jamming in groove
b) Scrapping from liner
c) Does not form oil wedge
d) All of the above
40) Crankcase L.O viscosity
decreases what will be the cause
a) Liner L.O contamination
b)
D.O contamination
c) …heavy oil contamination
d) None of the above
41) In (PLAN /75*60) what is the
unit of P
a) Pascal
b) Bar
c)
Kg/cm2
d) N/m2
42) Vessel is rolling and the
effect of rolling on main engine is prevented by
a) Partially by liner and piston
skirt and partially by crosshead guide
b) Partly by crosshead guide and
shoe
c) Only by liner
d) None of the above
43) HVOF= high velocity oxygen fuel
44) L.O best property
a) Oiliness
b)
Detergency
c) Antifoaming
d) Dispersancy
45) Main engine cylinder L.O
property
a)
Oiliness
b) Detergency
c) Antifoaming
d) Dispersancy
46) L.O property
a) Detergency, Dispersancy
b) Viscosity, SAE 40
c) TBN 15-30
d) All of the above
47) 2 stroke engine cylinder oil
a) SAE 30
b) SAE 40
c)
SAE 50
d) SAE 60
48) 2 stroke engine crankcase L.O
a) SAE 20
b)
SAE 30
c) SAE 40
d) SAE 50
49) What is the use of double
injection in electronic engine
a) Reduce SFOC
b) Reduce ignition delay
c) …
d) None of the above
50) Main starting airline
safeties= non return v/v,
bursting disc, flame arrestor
51) Types of turbine in T/C
a) Pr. Compounded , impulse type
b) Velocity compounded , impulse
type
c) Velocity compounded ,
reaction type
d) Pr. Compounded , reaction
type
52) Turning gear motor
a) High speed , high torque
b)
High speed , low torque
c) Low speed , high torque
d) Low speed , low torque
53) What is governor sensitivity
when overloaded
a) Quick response and over load
changes
b) …
c) …
54) Dual cycle efficiency
a) More than otto cycle
b) More than diesel cycle
c)
More than diesel cycle but less than
otto cycle
d) More than otto cycle but less
than diesel cycle
55) In crank case L.O testing
lead is found, what can be the reason
a) Gear wear down
b)
Bearing wear down
c) Liner wear down
d) Piston ring wear down
56) In crank case L.O testing
chromium is found , what can be the reason
a) Gear wear down
b) Bearing wear down
c) Liner wear down
d) Piston ring wear down
57) In 2 stroke crank case L.O if
silicon is found , what can be the reason
a) Sea water
b) Fresh water
c)
Cylinder L.O
d) …
58) Recommended T/C turbine side
washing
a) Water washing
b) Solid grit washing
c)
Water and solid grit washing
d) None of the above
59) Exhaust valve open due to
hydraulic pr. And close by
a) Coil spring
b)
Air spring
c) Both of the above
d) None of the above
60) In cold condition for good
startibility of main engine the compression ratio should be
a) 10 : 1
b) 12 : 1
c)
14 : 1
d) 16 : 1
61) Sulzer engine main bearing
pr. And crosshead pr.
a) 12-16 bar , 12-16 bar
b) 3-3.5 bar , 3-3.5 bar
c)
3-3.5 bar , 12-16 bar
d) 4-5 bar , 7-8 bar
62) From where to take main
bearing clearance
a) Forward
b) Aft
c) Either forward and aft
d)
Both forward and aft
63) Where you can find guide shoe
a)
A-frame
b) Entablature
c) Bed plate
d) None of the above
64) What is free
turbocharging = when ship
is stop T/C rotates due to inertia
65) 4 stroke connecting rod
__________ because subjected to __________ load
a)
I-section , axial
b) Circular section , radial
c) I-section , radial
d) Circular section , axial
66) How sodium is contaminated in
L.O of 4 stroke
a) Oxidation
b)
Salt water
c) Cylinder oil
d) …
67) If degree of overlapping is
higher then
I. Deficient scavenging takes
place
II. Cooling of internal component
a) I is true
b)
II is true
c) Both I and II true
d) Both I and II false
68) Why VIT is used
a) To make high peak pr.
b) To make high compression pr.
c)
Low
specific F.O consumption
d) For better combustion at part load and full load
69) What is meaning of
hydrodynamic lubrication
70) How piston cooling is done = Jet shaker effect
71) If fuel is advanced
a) Power decreases
b) Exhaust temp. increases
c)
Power increases
d) Exhaust temp. decreases
72) Bedding in of piston ring and
liner
a) Gas pr. That exists
b) Elasticity of springs
c) Combination of springs
d) …
73) T/C impeller
a) Axial
b) Radial
74) Gudgeon pin bearing
a) Sleeve
b) Angular contact
c) Roller
d)
Solid
75) When L.O is injected from
Lubricating quills
a) Once in a stroke
b) Twice in a stroke
c) Once in a cycle
d) Twice in a cycle
76) When bore polishing occurred
a)
Excessive lubrication
b) Poor lubrication
c) Worn out piston rings
d) …
77) SAE of crankcase L.O
a) 50
b)
30
c) 40
d) 20
78) Where does the fuel injection
culminates
a)
Helix when coincides with spill ports
b) When the fuel rack is at zero
position
c) Upper phase coincides with
spill ports
d) …
79) Corrosion wear in cylinder
liner in mid point
a)
No other special arrangement for this,
increase JCW temp. as high as possible and use high TBN
b) It is ok with option (a) but
it is sure that there is no need of other mechanical arrangement.
c) …
d) …
80) Life boat engine
a) 4 stroke ignition engine
b)
4 stroke diesel engine
c) 2 stroke ignition engine
d) 2 stroke diesel engine
81) Contamination of cylinder L.O
with crankcase oil
a) Cocking in piston
b) Bearing damage
c)
TBN value changes
d) …
82) New 2 stroke engine piston
design having 3 injectors
a)
Toroidal
b) Cylindrical
c) Spherical
d) Spheroidal
83) Where crankcase doors
situated
a) Bed plate
b) Cylinder head
c)
A-frame
d) Entablature
84) If high ignition lag takes
place what will be your action
a)
Advance timing
b) Retard timing
c) …
d) …
85) Crankcase relief v/v free
space
a) 110mm2
b)
115mm2
c) 120mm2
d) 130mm2
86) In 2 stroke why we use
different cylinder L.O
a) 2 stroke are long stroke
b) Diaphragm used to separate
c) …
d) …
87) Why supercharging is the best
form of turbocharging= because
engine efficiency can be increased exhaust gas.
88) Crosshead guiding shoes also
known as
a) Slipper pad
b)
Sliding pad
c) Thrust pad
d) …
89) How to prevent polishing of
liner by putting
a) Carbon cutting ring
b) Fire ring
c)
Both (a) and (b)
d) None of the above
90) To prevent polishing of liner
a) Carbon removing ring used
b) Flame band used
c) Both (a) and (b)
d) Either (a) or (b)
91) Why fitted bolt is used to
fastened bed plate to tank top
a) Short length
b)
Easy installation
c) Better to transfer propelling
thrust
d) …
92) Bore polishing definition
93) Piston cleaning ring also
known as
a) Oil cleaning ring
b) Piston cleaning ring
c)
Anti-polishing ring
d) …
94) If shims added to fuel pump
then
a) Advance
b)
Retard
c) Max combustion pr.
d) Less combustion pr.
95) Finishing of liner surface
a)
Top land carbon deposits
b) After reconditioning of liner
c) Corrosive wear
d) …
96) After running in a liner wear
set on constant rate
a)
0.05-0.1mm/1000hr
b) 0.5-1mm/1000hr
c) 0.02-0.42mm/1000hr
d) …
97) Cylinder liner material
a)
Cast iron
b) Cast steel
c) Mild steel
d) None of the above
98) What is the importance of
firing order
a) To start engine at any angle
b) Reduce bending moment
c) …
d)
All of the above
99) Why chrome liner seal ring is
used
a) Sealing of oil
b) Protection against corrosion
c) …
d)
Both (a) and (b)
100) How to reduce main engine F.O
pr.
a)
Setting relief valve of booster pump
b) Cannot change, refer manual
c) Reduces viscosity
d) …
101) Which statement is not true
a)
Piston ring butt clearance is large
enough for thermal expansion of the ring
b) Piston ring butt clearance as
minimum as possible for minimum blow past
c) …
d) …
102) Which statement is true
a) Crosshead bearing made of 2
half , the upper half has slots to accommodate piston rod foot
b)
Crosshead bearing made of 2 half , the
upper half has slots to accommodate piston rod foot and palm nut
c) Crosshead bearing made of 2
half , the upper and lower half both have slots
d) …
103) Which statement is true
a) Crankshaft is connected to
connecting rod through a crank pin and bearing and gives oscillating motion for
rotating the crankshaft and upper part is connected to piston rod with pin and
bearing.(Ans)
104) Viscosity is controlled by
a) Backwash filter
b)
Heater
c) All of the above
105) CPR function
a) Helps in cylinder lubrication
b)
Release constant pr.
c) …
d) …
106) OROS in MAN B & W which
part
a) Cylinder head
b) Liner
c)
Piston
d) Thrust pad
107) Location of F.O back wash
filter
a) Before circulating pump
suction
b)
After circulating pump discharge
c) After supply pump discharge
d) After viscotherm heater
108) Clover leafing
a)
Low TBN
b) Low viscosity
c) Adequate feed rate
d) All of the above
109) Hydraulic oil given in 4
stroke governor for
a) Lubrication
b) Lubrication and cooling
c) Lubrication and cooling and
maintaining pr. In hydraulic line
d) …
110) Small drop in speed due to
load then governor droop
a) Worse droop
b) Zero droop
c)
Fine droop
d) Heavy droop
111) In modern engine which liner
is used
a) Air cooled
b) F.W dry liner
c)
F.W wet liner
d) S.W wet liner
112) In fuel pump if shims added ,
then fuel timing will
a)
Retard
b) Advance
c) Quantity of fuel may vary
d) No change
113) Liner wear can be reduced by
a)
Controlling feed rate
b) Reducing combustion pr.
c) …
d) …
114) Naturally aspirated engine
exhaust gas goes out by freshly charged air in cylinder
a) Supercharging
b) Undercharging
c) Turbocharging
d) …
{NOTE: (d) option
is not scavenging something other was their}
115) Cylinder lubrication is done
by special injector and hold by air supply given by guides , which type of
lubrication
a) Timed lubrication
b) Swirl injection
c)
Cylinder pr.
d) None of the above
116) Non actuated motor for
cylinder lubrication will work on which principle
a)
Cylinder liner pr.
b) Exhaust valve timing
c) F.O pr.
d) L.O pr.
117) In main engine the gas
inertia acts
a) Power upward and compression
downward
b) Power downward and
compression upward
c)
Power downward and compression downward
d) Power upward and compression
upward
118) 2 stroke main engine max.
compression test and max. firing pr.
a) 80 bar , 140 bar
b)
100 bar , 135 bar
c) 60 bar , 125 bar
d) 120 bar , 180 bar
119) Microbial growth why?
a) Yeast
b) Fungi
c) Bacteria
d)
All of the above
120) High pr. F.O line extra
sheath why?
a) Marpol convention
b)
Solas
c) STCW
d) None of the above
121) Slippage in semi built
crankshaft
a)
Vibration increases
b) Out of balance force
c) …
d) …
122) Extreme pr. (EP) means
regarding
a) Property of hydraulic oil
b) Cylinder oil property
c)
L.O property
d) …
123) Bore cooling of piston
a) Reduction of thermal strain
b) Reduction of gas force stress
c) Reduction in temp. of piston
d) All of the above
124) Which bearing is having
stabilise influence on shaft
a)
Roller bearing
b) Ball bearing
c) Sleeve
d) Any of the above
125) Main engine performance
instrument
a) Clinometer
b)
Indicator
c) Odometer
d) Planimeter
126) In new electronic engine
indicator cock
a) Not required
b)
Required
127) Compression ring major
function
a) Elasticity
b) Spring
c) Gas pr.
d)
Both (a) and (b)
128) Total dissolved solids reduce
a)
Blow down
b) Hydrazine
c) Frequent compounding
d) Chemical cleaning
129) In FWG, the chemical which is
not used
a) Nitrite
b) Borates
c)
Chromates
d) All of the above
130) How is re seating of inlet
valve
a) Spring pr.
b) Gas pr.
c) Push rod
d) …
thanks to the guys who prepared this questions.
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