What are Oil Record Book (ORB) entries as per Marpol Annex 1 for ships

Every oil tanker of 150 tons gross tonnage and above and every ship of400 tons gross tonnage and above other than an oil tanker shall be provided with an Oil Record Book Part I and Every oil tanker of 150 tons gross tonnage and aboveshall also be provided with an Oil Record Book Part II


Entries for machinery space operations ORB part 1 (all ships):
(i) ballasting or cleaning of oil fuel tanks;
(ii) discharge of dirty ballast or cleaning water from tanks
(iii) disposal of oily residues (sludge);
(iv) discharge overboard or disposal otherwise of bilge water which has accumulated in machinery spaces
(v) Fuel oil bunker and bulk lube oil;

Entries for cargo/ballast operations ORB Part 2 (oil tankers):
(i) loading of oil cargo;
(ii) internal transfer of oil cargo during voyage;
(iii) unloading of oil cargo;
(iv) ballasting of cargo tanks and dedicated clean ballast tanks;
(v) cleaning of cargo tanks including crude oil washing;
(vi) discharge of ballast except from segregated ballast tanks;
(vii) discharge of water from slop tanks;
(viii) closing of all applicable valves or similar devices after slop tank discharge operations;
(ix) closing of valves necessary for isolation of dedicated clean ballast tanks from cargo and stripping lines after slop tank discharge operations;
(x) disposal of residues.

Marine engineering knowledge (Motor) MEK MCQ for MEO class 4 online questions for marine engineers in india

• Online question 1
• Online question 2
• Online question 3
• Online question 4
• Online question 5
• Online question 6

MEK Motor e pariksha online questions for class 4 engineers

1) Which of the following statements is true, about slow speed engines?
A.A scavenge fire can lead to a crankcase explosion
B.A scavenge fire can lead to deformation of diaphragm plate
C.A scavenge fire can lead to damage to tie rods.
D.All of the above.

2) When using low sulfur fuel oil for Emission Control Areas (ECA???S), ideally the TBN of the cylinder oil used should be:
A.Lower than normal
B.Higher than normal
C.Same as normal
D.Same as normal if the feed is kept higher

3) For a two stroke engine two o-rings are provided on the liner. The function of the top o-ring is to ___________ and function of the lower o-ring is to ____________
A.Seal jacket cooling water, act as secondary seal in case 1st o-ring leaks
B.Seal jacket cooling water, Seal scavenge air
C.Seal scavenge air, Seal Jacket cooling water
D.Seal combustion gases, Seal jacket cooling water

4) The coating which is provided on the valve stem of exhaust valves of modern marine diesel engines is of:
A.Nickel
B.Stellite
C.Chromium
D.Nimonic

5) If the combustion control system of an automatically fired auxiliary boiler fails to sustain burner ignition after a normal shutdown, you should check for a/an
A.faulty photocell detector
B.low steam pressure
C.high voltage on the ignition electrode
D.open air damper

6) What do you mean by surge limit of a turbocharger ?
A.Characteristic curve of a turbocharger
B.Portion of compressor characteristic curve which lies on the left side of the point of maximum pressure
C.A line joining all the points of maximum pressure on compressor characteristic curves , drawn at various speeds of operation
D.Maximum rpm limit of T/C above which surging will start

7) A large, low-speed, main propulsion diesel engine uses sea water to directly cool the
A.cylinder heads
B.exhaust valves
C.scavenging air
D.injectors

8) Exhaust Grouping is required in case of ______________ turbocharging in order to _____________________
A.Constant pressure , prevents shockwave generation
B.Pulse pressure , prevent interference with scavenging of other cylinders
C.Constant pressure, prevent interference with scavenging of other cylinders
D.Pulse pressure , prevents shockwave generation

9) Function of a de-superheater is to :
A.Protect superheater from overheat
B.Control superheater steam outlet temperature
C.Increase the efficiency of the boiler
D.Reduce steam temperature for auxiliary uses after steam superheater

10) Which of the following statements is false?
A.Oxidation of lubricant leads to decrease in its viscosity
B.Formation of oxidation acids, sulfuric acid leads to depletion of TBN of lubricant
C.Contamination with water will lead to decrease in the load carrying capacity of a lubricant .
D.Build up of insolubles will lead to increase in viscosity of a lubricant

11) Which of the following conditions is responsible for the fuel oil to atomize when using a steam atomizer in anauxiliary boiler?
A.Expansion of the steam in the furnace.
B.Expansion of the steam in the whirling chamber.
C.Expansion of the steam in the orifice plate.
D.All of the above.

12) After prolonged operation, jerk type fuel pumps wear on the top edge of plunger and edges of spill ports and helix due to erosion by high pressure fuel as it spills. This wear would result in _________________
A.Late start of injection and early end of injection
B.Early start of injection and late end of injection
C.Early start of injection and early end of injection
D.Late start of injection and late end of injection

13) It is a known fact that centrifugal pumps require priming for pumping liquids , as they cannot handle air and will lose suction due to air entry . But on the other hand T/Cs use centrifugal
compressors for supercharging . Which of the following do you think makes a centrifugal compressors to pump air and behave differently than the centrifugal pumps?
A.Presence of air cooler
B.Presence of Labyrinth seal
C.High speed of rotation , very fine internal clearences and large impeller diameters
D.Difference in principle of operation

14) If an operating auxiliary boiler has a water pH reading of 7, you should
A.bottom blow the boiler
B.treat the water with caustic soda
C.treat the water with chemical scavengers
D.reduce the water alkalinity to recommended readings

15) Even if there is an oil mist concentration inside a crankcase, and there is also a hot spot, crankcase explosion will only take place when_________________
A.The hot spot provides the ignition temperature for the oil mist concentration
B.When the oil mist - air mixture is in the flammable range
C.Both A and B
D.None of the abov

16) In case of 2-stroke marine diesel engines, the top part of the liner forming the combustion chamber experiences very high pressure induced mechanical stresses as well as high thermal stresses. Which of the following is a correctly designed liner for catering both the above stresses ?
A.Thick top portion with jacket cooling to take care of both the high mechanical and thermal stresses
B.Thick top portion to take care of high mechanical stresses while bore cooling to reduce thermal gradients
C.Thin top portion to reduce thermal gradients and hence thermal stresses while supporting ribs to take care of mechanical stresses
D.Thick top portion to take care of high mechanical stresses with jacket cooling combined with allowance for thermal expansion to minimize the thermal stresses

17) Which of these fuel oil impurities can cause maximum abrasive damage?
A.Water
B.Ash
C.Catalytic fines
D.Sodium

18) 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

19) Irregular circumferential wear of liner due to diminishing neutralizing capacity of cylinder oil away from lubricating holes is known as:
A.Micro seizure
B.Scuffing
C.Scoring
D.Clover leafing

20) Which of the following is a reasonable statement about water washing of turbine side of a T/C ?
A.It leads to thermal shock and reduces the life of the T/C
B.It leads to thermal shock and not so effective as solid washing
C.If properly carried out keeping rpm , load ,temperature limits & other factors into account , it is quite safe and more effective than solid washing
D.It should never be carried out as most of the engine manufacturers recommend against the same

Marine Engineering knowledge (Motor) online questions

1.Which standards govern the specifications for supply of Residual Marine Fuels and Distillate Marine Fuels onboard merchant ships?
A.ISO 3012:1999
B.ISO 3648:1996
C.ISO 8216-1:2010
D.ISO 8217:2010

2.Crank web deflection readings will give a positiveindication of
A.worn main bearing journals
B.torsional stress deformation
C.slack thrust bearings
D.bearing shells shim dimensions

3.ESD stands for which type of boiler
A.External superheater D-type
B.Emergency shutdown Boiler
C.Extreme Superheat type
D.External Superheat De-superheater type

4 )The advantage of tie rods over an engine without tie rods is that:
A.The engine is very easily aligned after any misalignment has taken place between different components of the engine
B.The engine doesn???t require thrust pads for transmission of thrust to the ship???s hull as the same is being taken care of by the tie rods
C.The engine components are much lighter leading in overall reduction is engine weight with a high power generation with the elimination of fatigue stresses
D.There are no advantages of engines with tie rods, because tie rods require regular maintenance and replacement like connecting rods and overall engine becomes more expensive to operate

5) Which of the following is an example of a solid bearing?
A.Piston pin bushing
B.Turbo-generator turbine bearing
C.Spring bearing
D.Thrust bearing

6) In order for microbiological growths to thrive in a fuel tank it is necessary for
A.high temperatures to exist
B.low temperatures to exist
C.small amounts of water to be present
D.large amounts of water to be present

7) Marine boilers burning H.F.O. face a problem of cold corrosion due to high sulphur content. The minimum flue gas temperature within any boiler part is kept above due point of H2SO4. The actual dew point of H2SO4 in flue gases depends on the :
A.Boiler furnace temperature
B.Ambient air temperature
C.Boiler operating pressure
D.HFO sulphur content and moisture in combustion air

8) The purpose of an air cooler in a supercharging system is to :
A.Reduce temperature of supercharged air in order to condense and remove maximum possible moisture from the air prior entry to the engine
B.Reduce the temperature of the supercharged air in order to increase the density & also to cool down below dew point to remove moisture from air prior entry to the engine
C.Cool supercharged air to increase its density such that the dew point is not reached to avoid entry of moisture into the engine
D.Cool supercharged air to increase it???s density and also to keep the peak temperature and exhaust gas temperature within limits


9] Use of Halon as fire extinguishing medium has been discontinued because________________
A.It is highly toxic
B.It is expensive
C.It has high Ozone depleting potential
D.It leads to acid rains

11) In comparison to exhaust valves, intake valves of diesel engines may be fabricated from low-alloy steels because
A.the beveled edges of the intake valves provide forself-centering during seating
B.intake valves utilize stellite-coated valve seat insertswhich reduce wear
C.the volume of air passing through intake valves is less than the volume of air passing through exhaust valves
D.intake valves are less affected to the corrosive action of exhaust gases

12) Why is it essential to renew turbocharger bearings after a preset number of hours of running even if the bearings are in seemingly perfect condition?
A.Because they are prone to failure due to prolonged exposure to high temperature conditions.
B.Because they are subject to cyclic loading and are prone to failure due to metal fatigue.
C.It is not essential to renew if condition monitoring suggests perfect condition.
D.Lube oil contamination is bound to occur and affect the condition of the bearings.

13) Which of the following statements is true?
A.The rotary vane type steering gear generally operates at higher oil pressures than the ram type .
B.The ram type steering gear generally operates at higher oil pressures than the rotary vane type .
C.Both ram type and rotary vane type steering gears generally operate at similar oil pressures
D.None of the above

14) What is the purpose of the inlet grid provided within the exhaust gas casing in the gas flow path ,prior entry to turbocharger ?
A.To filter out any unburnt carbon
B.To absorb and dampen the pressure fluctuation
C.To reduce noise in the constant pressure exhaust piping
D.To prevent any broken piston rings finding their way to turbine

15) Which of the following is a disadvantage of water as cooling medium for pistons, when compared to oil?
A.Chemical treatment is required
B.Higher thermal stresses in piston
C.Piston of more complicated design
D.All of the above

16) How is the concentration of dissolved oxygen in the feedwater of an auxiliary boiler maintained at acceptable limits?
A.Feedwater is cycled through a DC heater.
B.Feedwater is treated with phosphates.
C.Oxygen is liberated in the three-stages of feedwater preheating.
D.Oxygen is liberated by maintaining the highest practical feedwater temperature

17) In a 2-stroke marine diesel engine if the o-ring for Jacket cooling water sealing is leaking then:
A.The water will leak directly into the crankcase
B.The water will leak into the underpiston space
C.The water will come out through tell-tale hole provided between the two o-rings
D.The water will come out from the top of cylinder jacket

18) The lube oil pump used in a diesel engine is a
A.volute pump
B.centrifugal pump
C.diaphragm pump
D.gear pump

19) Prior to lighting off a cold automatically fired auxiliary boiler, you should
A.check and regulate the water level
B.close the air cock once fires are lit
C.blowdown the gage glass
D.crack the steam stop to assure protective steam flow

20) Steam temperature control for the ESD-II boiler is achieved by :
A.Fitting a de-superheater between 1st & 2nd passes of superheater
B.Fitting an attemperator between 1st & 2nd passes of superheate
C.Gas dampers in boiler uptake
D.Bypassing the superheater

Ship Construction and Stability MEO Class 4 e-pariksha online questions and Numerical for Marine Engineers exam in MMD India

• Question Paper 1
• Question Paper 2
• Question Paper 3
• Important Numericals 

Numericals- Ship Construction Naval Architecture e-pariksha MEO class 4 online numerical questions

1) transverse areas at different stations are given as follows:
 AP      1          3          4          FP    
3.4 m2           4.1 m2           5.8 m2           2.8 m2           1.4 m2
 Length of the vessel is 24m. Find the Displacement of vessel
 A. 360.1 tonnes
 B. 345.2 tonnes
 C. 382.8 tonnes
 D. 350.0 tonnes

2) The tables 1 and 2 of a vessel are half breadths of water plane between perpendiculars and appendage respectively. The lengths between perpendiculars and appendages are 60m and 7.5m respectively. Find the LCF of the water plane from mid ship

Table 1	Station	AP	1	2	3	4	5	FP
	?? Breadths	2.5	4.73	5.88	6.0	5.09	3.11	0.0
Table 2	Station	AP	-1	-2	-3
	?? Breadths	2.5	1.88	1.25	0.63

 
A 4.87 m towards ford
B 4.23 m towards ford
C Midship
D 4.04 m towards aft

3) A barge of length 6.5 m beam 10.2 m and draft 4m in even keel condition the ship is in water of density 1.006t/m^3 find the bodily sincage of the mean draft if the displacement is constant
a)0.086   b)0.076   c)0.095   d)0.075

4) A vessel loaded to summer load line. Summer load line Displacement= 15,000 t, TPC=26.2, ship’s mean draft= 6.2 m. Ship is going in Winter Region…what is the New Displacement?
a) 14112.3
b) 14878.8
c) 14655.1

5) Find the Cw of the following
AP-2-3-4-Fp
0.6-1.1-1.6-0.9-0.1
Breadth is 15
a) 0.82  b)0.72   c)0.62   d)0.52

6) The RD solid block of wood is 0.75. All sides are equal to 1.0m. The block is floating in mercury. The RD of mercury is 13.4. What will be weight of a steel block just to submerge the block?
A  12.6 tonnes
B  13.5 tonnes
C 14.2 tonnes

7) A box barge, length 35m and beam 7m, is floating at draft 3m in brackish water, density 1.012t/m3. The length of mid-ship compartment is 10m and full depth. The compartment is bilged. Find the new draft.
A.4.2 m;
B.4.4 m
C.4.3 m;
D 4.1 m

Find the TPC of the water plane. Length between perpendiculars is 15 m.
Station: AP 2 3 4 FP
 half breadth (m): 0.6 1.1 1.6 0.9 0.1
A.0.5 tonnes/cm
B 0.4 tonnes/cm
C.0.3 tonnes/cm
D.0.2 tonnes

8) Find the TPC when offset of water plane is as follows:
Station AP 2 3 4 5 FP
Half breadth (m) 0.9 1.5 2.1 1.6 0.9 0.1
Length of water plane is 15 meters.
A.0.2 t/cm
B.0.3 t/cm
C.0.4 t/cm
D.0.5 t/cm

9) The main dimension of a vessel is 150 m long, 30 m beam and is floating at draft 10 m. The block coefficient and mid-ship section coefficients are 0.86 and 0.95 respectively. A constant section, length 30 m, is added at mid-ship. Find the new block coefficient
a 0.925
b 0.900
c 0.875
d 0.850

10) Find CWP and TPC of a vessel whose ?? breadths of the water plane as follows:
Station: AP 1 2 3 4 FP
half Breadths (M) 1.0 1.44 1.55 1.33 0.89 0.2
Length between perpendiculars is 14 meters.
Consider the nearest value.
0.56 tonnes/cm
0.34 tonnes/cm
0.43 tonnes/cm
 0.65 tonnes/cm


 

E-Pariksha Ship Construction and Stability online questions for MEO Class 4

1) Air pipes in tanks are generally located:
A.Near filling pipes
B.Near pump suctions
C.At the opposite end of filling pipes and/or the highest point in the tank
D.At the lowest point in the tank


2) The surface of each blade of propeller when viewed from aft is known as the __________________
A.Back
B.Leading edge
C.Trailing edge
D.Face

3) The cyclic angular motion of a ship about the ford ???aft axis under the action of waves is known as:
A.Pitching
B.Yawing
C.Rolling
D.Heaving

4) Curves of immersed cross-sectional area of a ship , plotted against draught for each transverse section ,
are known as
A.Cross curves of Stability
B.Displacement Curves
C.Hydrostatic Curves
D.Bonjean Curves

5) Peak tanks are tested by:
A Hose test
B.By filling them with water up to load water line
C.By filling them with water up to the maximum head which can come on them in practice or 2.44 m above tank crown, whichever is higher
D.None of the above

6) Plates used to connect stern frames to flat plate keel are called:
A.Shoe plates
B.Coffin plates
C.Stealer plates
D.Boss plates

7) Thickness of strakes of bottom plating is increased in which of the following regions of the ship?
A.Pounding region
B.Over 40% of ship???s length amidships
C.Over 40% of ships length forward
D.Both A and B

8) In a shell expansion plan, plate D5 refers to:
A.Fourth plate from aft and fifth strake from keel
B.Fifth plate from aft and fourth strake from the keel
C.Fourth plate from forward and fifth strake from keel
D.Fifth plate from forward and fourth strake from keel

9) The mass of a ship without cargo, fuel, stores, water, crew etc that a ship carries is known as:
A.Deadweight
B. Lightweight
C.Displacement
D.Tonnage

10) Why the frictional resistance increases when the draft increases?
A.Dead weight of the vessel increases.
B.Length of water plane increases.
C.Wetted surface increases.
D.Temperature of water reduces as draft increases.


11) As per conditions of assignments, the minimum height of air pipe openings must be ________ on the freeboard deck
A.380 mm
B.450 mm
C.600 mm
D.760 mm


12) The primary purpose of fitting a bulbous bow is to:
A.Improve the appearance of the ship.
B.Strengthen the bow
C.Improve propulsive efficiency
D.Improve resistance to pounding

13) The purpose of providing tumble home is to:
A.Improve the appearance of the ship
B.Help drain off water from deck easily
C.Reduce the volume of water coming on deck
D.Help drain tanks to bilges


14) GM of ship will change with
a) Shifting of weight longitudinally
b) Shifting of weight transversely
c) Shifting of weight vertically
d) All of the above


15) In longitudinally framed double bottoms, in frame spaces where there are no solid floors, the brackets
on tank sides and center girder should not be more than ___________ apart.
A.2.5m
B.3.7m
C.3.8m
D.1.25m


16) In longitudinally framed double bottoms, solid plate floors are fitted at _________ frame space in pounding region and at ________frame space under the main engine.
A.Alternate, every
B.Alternate, alternate
C.Every, every
D.Every, alternate


17) kg of ship increases with...
a) adding weight above on present kg
b)balasting db tank
c)moving weight in transverse direction
d)moving weight in frwd direction


18.in shipco beam bracket are triangular plates joining the deck beam to a.
a. bulkhead
b. frame
c. stanchion
d. deck longitudinal

19.the bleeder plug or docking plug located on a motor vessel double
bottom tank is used to
1 indicate when the tank is pressed up
2 provide a secondary means of tank sounding
3 vent air from the tank when bunkering.
4 empty the tank when in dry dock

20). vertical support member used to strengthen bulkheads are called
a stiffner
b panels
c brackets
d stanchions

Marine Engineering Practice (MEP) MCQ for e-pariksha online questions for MEO class 4 engineers

Question Set 1

Question Set 2

Question Set 3

Question Set 4

Question Set 5

Marine Engineering Practice Online Mulitiple Choice Questions for Seafarers of India

1.Why are large centrifugal pumps started with their discharge valves closed?
A. To ensure proper priming
B. To limit sudden rise in discharge rate
C. To limit motor starting current
D. To minimize starting torque on motor shaft

2.Which of the following statements are true as far as painting of steel hull/structure is
concerned? Multiple choice
A. Painting can be done under any weather condition
B. Painting can only be done after proper surface preparation is carried out
C. Painting should only be done on top of appropriate primer coating
D. Several coats of paint can be applied one after the other without any time gap

4. A multistage centrifugal pump is normally used
A. High head
B. High discharge flow
C. High viscous fluids
D. Low viscous fluid

5. In a three phase electrical equipment, the immediate action in the event of a fuse blowing in
one of the phases, would be:
A. To replace with a fuse of correct rating
B. To replace fuses on all three phases
C. To try to repair the fuse
D. To investigate the fault that led to the blowing of the fuse '/

6. A drain cooler is provided with S.W. cooling. What is the best way to increase the temperature
of condensate draining to the hotwell?
A. Throttle the S.W. inlet valve
B. Throttle the S.W. outlet valve
C. Open the condensate Bypass to the cooler
D. Close the condensate bypass to the cooler

7. Which of the following option gives you the correct sequence of the metals in decreasing
order of preferential corrosion when all of them are bonded and immersed in an electrolyte ?
A. Titanium, Mild Steel , Zinc , Stainless steel
B. Titanium , Stainless steel ,Mild Steel ,Zinc
C. Zinc , Mild Steel , Stainless steel , Titanium
D. Zinc , Titanium , Mild Steel , Stainless steel;

8. During auxiliary engine de-carbonization, which of the following checks need to be carried
out?
A. Sounding of all double bottom tanks
B. Connecting rod big end ovality
C. Liner wear
D. Crack detection tests on connecting rod serrations

9.A reciprocating pump is used for Engine room bilge service because:
A. Reciprocating pumps are designed for smoother discharge
B. Only small capacity pumping capacity is required, while other pumps are of higher
capacity
C. It doesn???t churn and mix the bilge water unlike other types of rotary and
rotodynamicpumps
D. Shipbuilding industry is still going on old concept, future ships will have centrifugal pumps
installed

10. The machinery which is usually tested first once the ship reaches a dry dock is
A. Engine room crane
B. Engine room lift
C. Gantry crane for engine room
D. All of the above

11.the size of solid particle contaminants in hydraulic systems is measured in:
A. Millimeter cubed
B. Nano-millimeter
C. Microns
D. Micro millimeter

12.In a reciprocating pump the direction of flow depends upon:
A. Direction of rotation of the pump
B. Position & fixing of suction and discharge valves
C. High pressure to low pressure
D. Whether pump is single acting or double acting

13 .Fire side in boilers gets commonly corroded due to :
A. Galvanic action
B. Formation of Vanadium pentaoxide and sulphuric acid
C. Stress corrosion
D. Crevice corrosion

14.Which of the following statements is False about hydraulic jacks/tensioning tools?
A. The piston of the jack should be turned back by a certain degree after hand tightening to
prevent easy removal after un tightening of the nut.
B. The piston of the jack should not be turned back after hand tightening during un
tightening of the nut
C. The piston of the jack need not be turned back during tightening of the nut.
D. The hydraulic pressure need not be relieved during removal of the jack.


15.In a shell and type M/E L.O. cooler, the temperature of L.O. is controlled by an automatic
temperature control valve. Out at sea with M/E running at sea load it is observed that the
temperature control valve opening to the cooler is increasing day by until it becomes 100% open
to the cooler. The L.O. outlet temperature _______________ after the above condition has reached
A. Starts decreasing immediately
B. Starts increasing immediately
C. Will be maintained at the set point of the temperature controller
D. Cannot be maintained at the set point and will increase slowly

16.Which of the following is NOT a rotary motion valve?
A. Gate valve
B. Butterfly Valve
C. Ball valve
D. Plug Valve

17.Which of the following can lead to short cycling or frequent cutting in and cutting out of a
fridge compressor?
A. Dirty condenser
B. Air entrapped in refrigerant
C. High cooling water temperature
D. Grossly insufficient charge

18.During shutting down the purifier you find that purifier always vibrates heavily for some time
and then becomes normal until it finally comes to a stop. What is wrong with purifier?
A. The purifier design is faulty
B. The purifier bowl has a heavy sludge deposit and requires cleaning
C. The purifier bowl is not balanced properly
D. During shutting down most of the purifiers pass through the critical speed zone

19.Hot corrosion in exhaust valves and fire side of boiler mainly when :
A. Fuels containing vanadium content with high sodium content are used
B. Fuels containing vanadium content with low sodium content are used(3:1)
C. Fuels containing high vanadium and high sulphur content are used
D. Fuels containing high sulphur content is used and the exhaust temperatures are
uncontrolled and exceed 600 deg. C

20.NPSH and the Total suction head are two terms which are commonly used for pumps. Which of
the following is a true statement?
A. They are one and the same thing
B. Total suction head is greater than NPSH
C. NPSH is always greater than Total suction head
D. Total suction head and NPSH have no relationship

21. Auxiliary engine connecting rod bottom end bolts should be tightened:
A. Only as per the prescribed torque using a torque range
B. As per prescribed torque as well as angular measurements as recommended by the
manufacturer.
C. By following previous match marks on bolt heads and connecting rod body
D. As per prescribed torque and another 10% increase during every subsequent tightening. \

Marine engineering practice e-pariksha online questions

1.For the S.W. side of a M/E L.O. cooler it is noticed that rise in S.W.temperature through the cooler has
decreased from 12 deg. C to 7 deg. C over a period of time, while the drop in temperature of L.O. across
the cooler has also decreased.All other coolers have been reported to be working normal & M/E is also
running at a constant load in calm weather.What is the inference drawn by decrease in the temperature
difference?
A. The cooling S.W. inlet temperature has reduced
B. The efficiency of the cooler has increased over a period of time
C. The cooler has become dirty on the S.W. sideor L.O. side
D. S.W. side of the cooler may be partially blocked with mud and sea shells

2.Surface preparation of steel surfaces , prior carrying out painting is
important because (choose the best alternative) :
A. Any rust and contaminant inclusions may cause local paint film breakdown
B. Too much paint will be consumed if surface preparation is not carried out
C. Surface will be very rough if proper surface preparation is not carried out
D. Surface preparation deposits a chemical onto steel surface which reacts with paint film and causes
strong bonding

3.Vacuum priming pumps which work on the principle of fixed vane pumps require _____________
for___________ clearance between vane tips and casing.
A. Lube oil, lubricating
B. Lube oil, sealing
C. Water, sealing
D. Gland packing, sealing

4.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


5.Which of the following can be done to reduce the cold corrosion of Main Engine cylinder liners using
high sulphur fuel oil :-
A. Increasing cylinder oil feed rate
B. Using high TBN cylinder oil
C. Increasing scavenge air temperature
D. Decreasing cylinder oil feed rate

6.The suction pressure gauge of the Engine room bilge pump is brokenand you don???t have a spare.
Chief Engineer has asked you totroubleshoot the problem with Bilge pump not taking suction
from Fwd.(P) bilge well. You try taking suction from Fwd. (S) & Aft Bilgewell and find that pump is taking
good suction. Thereafter you Try suction from Fwd. (P) bilge well for sometime after priming with Sea
Water but there is no change in level. You inspect the suction filter of the pump and find that it is very
difficult to remove the same,you had to apply too much of force to lift the filter cover while normally it
comes out easily. What does it indicate?
A. It does not indicate anything, sometimes the filter covers are difficult to remove.
B. It indicates that the suction valve of the Fwd. Bilge Pump is leaking
C. It indicates that the suction filter of the Fwd. (P) bilge well is clogged completely
D. Pump suction filter might be clogged


7.Pump driven clutch type attached vacuum pumps are commonly used for priming ballast pumps and
emergency fire pumps. What is the factor which clutches the vacuum pump clutch to the pump clutch
during start of the pump?
A. Low suction pressure acting against the spring loaded clutching piston
B. High suction pressure acting against the spring loaded clutching piston
C. Low discharge pressure acting against the spring loaded clutching piston
D. High discharge pressure acting against the spring loaded clutching piston


8.It is given that engine room bilge pump has suction manifold on which 3 valves are located. One valve
for the 3 engine room bilge wells suction, another one for Bilge tank suction and the third one is for sea
water suction. It is found that the Bilge pump is unable to take suction from any of the bilge wells, but is
able to take suction efficiently from Bilge tank. What is the most probable cause?
A. Pump suction filter cover gasket leaking
B. Suction filter cover gasket of one of the Bilge wells is leaking
C. Bilge well suction pipeline leaking between individual bilge well valves and suction manifold valve
D. Bilge pump suction pipeline leaking between the manifold and the pump


9.Chromium is a nobler metal when compared to that of steel . In some marine applications Chromium
is electroplated to the steel surfaces . Why?
A. Chromium is a more noble metal so it will not get corroded and thus steel surfaces will remain
protected
B. Chromium plating provides corrosion protection as well as high glossiness and high hardness for better
wear resistance and reduced friction to the steel surfaces
C. Chromium plating is required for providing high glossiness and high hardness for better wear
resistance and reduced friction to the steel surfaces and not for corrosion protection
D. Chromium reacts with steel to form an alloy during electroplating which is corrosion resistant

11.Increasing the rotational speed of a cargo pump the pump flow rate will:
A. Increase in direct proportion to the increase in speed
B. Decrease in direct proportion to the increase in speed
C. Flow rate doesn???t depend upon speed
D. Flow

12.The ballast valve of the fore peak tank is located in the duct keel andcannot be opened or shut by
remote operation. The valves of othertanks can be operated remotely without any trouble Which of the
following will be the best practice?
A. Valve should be checked locally for troubleshooting without which it is difficult to find the
exact problem
B. The actuator must be defective and should be replaced with a new one
C. The control circuit is defective and the PCB should be replaced
D. Shore assistance will be required in such cases


13.It has been reported that Engine room bilge pump was unable to take suction from Fwd. (P) bilge well
while it taking suction efficiently from Fwd.(S) & aft bilge wells. What could be the most probable cause?
A. There is leakage in the bilge suction pipeline somewhere between the bilge wells and bilge pump
B. The Fwd. (P) bilge well suction valve might be leaking
C. The Fwd. (P) bilge well suction filter cover gasket might be leaking
D. The pump needs to be overhauled


14.Which of the following is a correct point for sampling of system lube oil for on board or shore
analysis?
A. Standpipes
B. Purifier outlets
C. Inlet or outlet of L. O. coolers
D. Tank drains


15.After maintaining correct discharge pressure , soon ceases to discharge water what are possible
cause?
A. Pressure gauge wrong
B. Pump sucking air
C. Discharge valve throttled
D. Casing wear ring is worn

16. Which of the following V/V cannot be overhauled in place without removing piping?
A) BallValve
B) Diaphragm valve
C) Globe valve
D) Butterfly valve


17. Copper tubing is used in refrigerant system because
A) It has less internal resistance
B) It is cheaper compared to other materials.
C) It is easier to check leaks in copper based system
D)None of the above

18. When pressure inside a system falls below that of the vapour pressure of the liquid
Cavities r formed, cavities travelling to high pressure region collapses releasing
Considerable energy damage the metal surface which is known as
A) Cavitation
B) Erosion
C) Impingment Corrosion
D) Cavitation Erosion