76. steam stop valve is eased of its seat during boiler

76. Steam stop valve is eased of its seat during boiler start up from cold

A. To allow thermal expansion of parts

B. To allow steam flow during start up

C. To prevent water hammer

D. All of the above

77. Duty of standby person at the entrance of the enclosed compartment during enclosed space entry is

A. To alert others in case of untoward emergency

B. To provide first aid to injured person

C. To assist for the work carried out in the enclosed compartment

D. All of the above.

78. Which of the following statements about the design of D- type boilers, is false?

A. The heavier water in top drum flows back to the bottom drum through the down- comers outsidethe furnace

B. Inside the furnace the water is heated up in the risers

C. The upper drum is the steam/water drum and the lower one is the water drum.

D. The feed water is pumped into the lower drum

79. If the watch keeping engineer encounters a Main Engine Slow down alarm he should__

A. Immediately cancel the slowdown in the control panel

B. If navigation circumstances permit, after consulting chief engineer he should tell bridge to stop engine ,investigate the fault ,rectify it in consultation with senior engineers and then prepare for restarting the engine

C. He should raise engineer's alarm and wait for all engineers to reach the engine room

D. He need not take any action and wait for the alarm to resolve on its own and then cancel the slow down

80. Which of the following types of coatings used in tanks of a chemical carrier provides a comprehensive protection against most solvents?

A. Epoxy coatings

B. Polyurethane coatings

C. Zinc silicate

D. Phenolic resins

81. Presence of catalytic fines in fuel oil is significant to engineers on board because_

A. Catalytic fines tend to impair proper operation of purifiers

B. Catalytic fines lead to abrasive wear in liners , piston rings and fuel injection equipment

C. Catalytic fines necessitate increase in injection temperature

D. Catalytic fines necessitate increase in storage temperature

82. A partial opening of which of the following kinds of valves can lead to wire -drawing of its seat?

A. Globe Valve

B. Butterfly valve

C. Gate Valve

D. Full bore angle valve

83. Which of the following types of steam traps uses the pressure energy of the steam to close the outlet ?

A. Thermostatic trap

B. Thermodynamic trap

C. Mechanical trap

D. Vacuum trap

84. Sequential starting of machineries after black out in engine room is necessary

A. To prevent overload of Generators

B. To quickly restore the failed power supply in order

C. To prevent damage to machinery which has been switched off

D. All of the above

85. Salinity of distilled water produced from fresh water generator onboard depends on

A. Amount of feed set in fresh water production

B. Amount of salt water leaking from condenser if any

C. Temperature of the sea water used

D. Efficiency of brine ejector from the evaporator shell

86. Which of the following is the material used for manufacturing tube plates of a shell and tube typeheat exchanger?

A. Cupro-nickel

B. Aluminum Brass

C. Admiralty Brass

D. Gunmetal

87. How is the water circulated between water and steam drums in a water tube D- type boiler?

A. By the boiler feed water pump

B. By a circulating pump outside the boiler

C. Due to difference in densities of water and steam

D. None of the above

88. The seating material for perfectly sealing type Ball valves is usually made up of

A. Rubber

B. PTFE or Nylon

C. Rubber reinforced with steel wire

D. Stainless steel

89. Air is removed from refrigeration system by (1) ________ at receiver after (2) ________ (3) ___ Gas in receiver.

1. PURGING 2.COLLECTING. 3. CONDENSATING

90. Water leaking from a pump packing gland is kept away from the bearing housing by the use of

shaft sleeves

lantern rings

water defectors

water seals

SECTION 4

TAKEN FROM DG SHIPPING OLD QUESTION

1. Which of the following conditions should be used to support the need to change thelube oil when there has been an increase in the neutralization number?

A decrease in the viscosity of the oil An increase in the viscosity of the oil A change in the cloud point A change in the floc point

2. The purpose of bilge keels as an example is to reduce the amplitude of roll. What arrangements need tobe made on a ship to achieve the following:

lower the center of gravity of the ship reduce pitching reduce yawing

3. A casing drain is provided for axial piston and bent axis variable stroke pumps to ___________. vent off any accumulated air from the system drain off any accumulated water from the pump casing prior to its being started assist the complete removal of hydraulic oil from the system prior to opening for major or

minor repairs prevent damage due to agitation and overheating of oil accumulated in the casing as a result of

minor internal leakage

4. Increasing the speed of a rotary pump above its rated speed will result in most of the followingconditions to occur?

Increased suction Increased clearances Vibrations slippage

5. After packing is added to the stern tube stuffing box, which of the following procedures should beobserved to insure even tightening of the gland?

Listen for a smooth, regular sound. Measure the distance between the gland and the stuffing box with a rule. Judge by feeling the gland for an increase in heat as it is being tightened up. Open the drain connection to allow seawater to flow in and make the distance even.

6. The temperature at which water vapor in the atmosphere begins to condense is called the____________.

dew point temperature

condensation temperature psychometric temperature absolute humidity temperature

7. One function of the air receiver in a compressed air system is to _____________. dry the air discharged from the intercooler minimize the system's line pulsations receive exhaust air from pneumatic accessories remove all traces of oil from the air

8. Which of the following statements describes the purpose of the split inflatable seal installed aft of theprimary seal assembly for the propeller shaft?

To serve as a seal when adding packing to the stuffing box. To allow repair or replacement of the primary seal elements when the ship is waterborne. To eliminate leakage via the propeller shaft when the shaft is not rotating. To provide a ready means for the entry of cooling water.

9. Why should a person performing maintenance on an air compressor wire and tag the system valvesclosed?

To prevent the unexpected. To protect the equipment. To protect the operator performing the maintenance. Each of the above is correct.

10. One of the main differences between the various types of screw pumps is in the __________. stuffing box diameter direction of rotation of the screws pitch of the screws type of driving gears

11. The FIRST thing to do to ensure that a refrigeration unit will not start while undergoing repairs, is to____________.

secure and tag the electrical circuit place a crow bar in the flywheel of the unit inform all persons in the area not to start the unit make a log book entry

12. At which of the following locations would a duplex pressure gage most likely be located? Fuel oil service pump discharge flange Fuel oil strainer Fuel oil heater Fuel oil flow meter

13. In any air system a safety device should be placed between any two points where air can be trapped between any two valves.(a) Which can be closed manually.(b) Between a non –return valve and a screw down valve.(c) Between a non-return valve and a U-bend of a pipe.(d) Between any valve and a nozzle.

14. Some of the following are preferred refrigerants of the future(a) Carbon dioxide

(b) Refrigerant 11

(a) Refrigerant 502(b) Ammonia(c) Bromine(d) Argon

15. In the air conditioning of a ship a “Comfort Zone” constitutes(a) Low humidity, low room temperature(b) Low humidity, moderate temperature(c) High humidity, moderate temperature(d) Very low temperature, moderate humidity

16. The passenger spaces of a passenger ship is protected against major fires by a (a) High expansion foam system(b) High density CO2 system(c) By a mixture of fire detection, fire retardant, ‘A-1 class bulkhead, fire doors, fire insulation and

elabrate sprinkler system.(d) High pressure steam system.

17. Sand impregnated with chemicals is kept in metal containers with a shovel, in the engine room, for the following purposes(a) to cover small oil spills(b) to use along with cement for doing repair jobs.(c) for making the floor anti-skid by giving more friction.(d) for use as grinding paste in case of emergency.

18. Which of the processes listed, consumes the greatest amount of power while producing the greatestamount of heat? Overcoming sliding friction Overcoming rolling friction Overcoming fluid friction Overcoming oil wedge friction

19. Which of the following guidelines is considered to reflect good design practices of shipboard steamheating systems?

Provide constant steam service for equipment operating throughout the year. Provide either a common or individual reducing station for each group of units requiring the

same operating pressure. Run all piping so it may be drained by gravity. All of the above.

20. A distinguishing feature of an eductor, when compared to other pumps, is the ______________. discharge end being smaller than the suction end small size of impeller lack of moving parts ease at which the wearing rings may be changed

21. When securing a flash-type evaporator for an extended period of time, you should _____________. fill the unit with saltwater fill the unit with descaling compound completely drain the unit tightly seal the unit to exclude air

22. The portion of a hydraulic hose that determines its overall strength, is the _____________. inner tube braided inner layer(s) outer cover outer armor

23. Which features of a centrifugal pump reduce the need for renewing worn impellers and pump casings? Close radial clearance between impeller hub and casing Low rotational speed of impeller Removable end plate Replaceable impeller and casing wearing rings

24. An acceptable method of dealing with accumulated oil found in the pump room bilges is to ______________. transfer the oil to the sea chest pump the oil into the slop tanks discharge the oil over the side on an outgoing tide pump the oil into a clean ballast tank

25. A ship is required to carry an Oil Record Book, and must maintain the book as per rules on board for _______________.

1. one year2. two years3. three years4. four years

26. Which of the following actions, pertaining to saltwater lubricated stern tube stuffing boxes, is usuallyobserved when the ship is expected to be in port for an extended period?

The stuffing box is continually flushed. The drain connection is left opened. The stuffing box gland is tightened. The packing is adjusted for greater cooling or replaced.

SECTION 5

1. A high pressure differential in a main engine fuel oil filter onboard can be best reduced by

A. Back flushing the filter manually

B. Stopping the main engine to change the filter element

C. Changing over to stand by filter if provided

D. None of the Above

2. Inert Gas System should be capable of delivering Inert Gas at the rate of atleast____________________________

A. 110% of the maximum rate of cargo discharge capacity of the ship

B. 133.33% of the maximum rate of cargo discharge capacity of the ship

C. 125% of the maximum rate of cargo discharge capacity of the ship

D. 90% of the maximum rate of cargo discharge capacity of the ship

3. The static positive suction head of a pump is the

A. distance of the suction liquid level above the center line of the pump

B. distance the suction liquid level is below the center line of the pumps

C. force necessary to overcome frictional losses in the pump and piping

D. amount in inches of mercury the total suction head is below atmospheric pressure

4. When overhauling engines in bad weather onboard

A. Use additional lifting equipments

B. Use heaving line to prevent moving of item

C. Use chain block if required to restrain moving of parts


5. Two compressors should not be run in parallel because

A. It is not efficient to run two compressors

B. It will give over capacity in the system

C. There is possibility of losing oil from the compressors

D. A and B

6. The term referring to the number of teeth per inch on a hacksaw blade is known as the

A. Set

B. rake

C. pitch

D. thread gauge

7. The ash content of a fuel oil is significant to the operating engineer because it

A. is an indication of the amount of noncombustible material present in the oil

B. indicates the quantity of energy released by burning a unit amount of the fuel

C. is useful for determining proper atomization temperatures

D. reflects the overall thermal efficiency of the fuel oil service system

8. Air conditioning system air handling units must have their air filters cleaned at regular intervals in order to prevent______

A. Growth of microorganisms and bacteria harmful to human beings

B. Restriction to air flow and hence reduced efficiency of the plant

C. Growth of mites and other allergens

D. All of the above

9. Amount of distilled water produced in fresh water generator onboard decreases with

A. Increase in vacuum in the fresh water generator shell

B. Decrease in sea water temperature

C. Decrease in efficiency of heat exchanger

D. Increase in sea water temperature

10. Before any work is to be carried out on a burner in an automatically fired auxiliary boiler, you should always

A. block all control system relays closed

B. allow the boiler to cool completely

C. close all manually operated fuel valves

D. lock all safety interlock switches closed

11. Soot blowing of boilers onboard can be carried during

A. Port operations

B. Sailing

C. During indications of a uptake fire

D. Inerting operations in oil tankers

12. Which of the following components in an Inert Gas system ensures that vapours are vented well clear of the working deck? i) High velocity vents ii) Mast risers

A. Only i)

B. Only ii)

C. Both i) and ii)

D. Neither I) nor ii)

13. Which of the following is most suited to act as a deck air compressor?

A. Lobe type

B. Reciprocating type

C. Screw type


14. Safety of Gas cylinders used for cutting and welding is ensured

A. By fitting of flash back arrestor

B. By using color codes for gas pipe connections

C. By using trolley???s when transferring cylinders

D. All of the above.

15. Pumps impart energy to a fluid but the energy required to bring the fluid to the pump may be provided by________________

A. Gravitational Head

B. Atmospheric pressure

C. Another pump

D. Any one or a combination of above

16. Injecting water into the combustion chamber of marine engines is a primary method of reductionof which of the following air pollutants?

A. SOx

B. Particulate matters

C. Unburnt Hydrocarbons

D. NOx

17. In case of failure of control air supply ,some valves continue locked in the position they were at the time of failure . They are said to be-

A. Fail-safe

B. Fail -proof

C. Fail-set

D. Fail -blocked

18. Old machinery space log book are kept in safe custody

A. To refer and clarify in case of any query

B. For purpose of internal and external audits

C. To safeguard the chief engineer???s competence


19. If the superheat value of a thermostatic expansion valve is set too low________

A. The suction line of the compressor will be too hot

B. The suction line of the compressor will be too cold

C. The discharge line of the compressor will be too hot

D. The discharge line of the compressor will be too cold

20. Which of the following chemical compounds prevents caking of powder in dry chemical powder fire extinguisher?

A. Sodium Stearate

B. Sodium Bicarbonate

C. Magnesium Stearate

D. Magnesium Bicarbonate

21. The primary advantage of a central cooling system is______________________

A. A more simplified cooling circuit.

B. Most part of the cooling system being fresh water based,corrosion is minimized

C. It allows better control of temperatures by using fewer controllers

D. All of the above

22. Refractory damage in boiler furnace onboard is caused due to

A. Presence of moisture in the boiler before startup

B. Rapidly fluctuating temperatures inside boiler furnace

C. Overheating of boiler tubes due to lack of heat transfer from tubes due to scale

D. Boiler panting and vibrations

23. Which of the listed conditions can lead to cavitation in a centrifugal pump?

A. Vapor pockets formed in the suction flow stream

B. Rough casing volute surfaces

C. Worn wearing rings

D. Heavy fluid in the flow stream

24. A major controlling factor in the location of the condensate return piping from a heating system is/are

A. the requirement for a gravity return

B. the requirement for short laterals run

C. the requirement to minimize conflict with headroom and other services

D. all of the above

25. To maximize the effectiveness of soot blowing onboard

A. Ensure Boiler is firing at high load

B. Ensure Boiler is firing at low load

C. Ensure combustion parameters maintained normal


26. Isolation of filters onboard prior to cleaning is done by

A. Closing of inlet and out let valves

B. Switching of the relevant pump and system valves

C. Opening of drains and vent valves

D. All of the above

27. Which of the following type of pumps is most suited to act as Waste Oil Sludge Pump?

A. Centrifugal pump

B. Screw pump

C. Gear Pump

D. Progressive cavity pump

28. In the Alcap principle of centrifugal separation______________________

A. Water is only discharged when desludgeing is activated by the control unit

B. The valve at the water outlet is opened periodically based on timer action

C. The valve at the water outlet is opened on the basis of signal of water content to the control unit from the water transducer at the clean oil outlet

D. The centrifuge works as a clarifier with no water outlet

29. High pressure cut out of a refrigerant system can activate due to which of the following faults?

A. Improper cooling due to a dirty condenser

B. Overcharge

C. Air in the system

D. All of the above

30. To prevent electric shock during electric arc welding

A. Wear dry clothes

B. Wear insulated shoes

C. Keep first aid equipment ready


31. A record of the types and strengths of steels used on a MODU must be included in the

A. General plans

B. Builder's documentation

C. Certificate of Inspection

D. Construction portfolio

32. Water hammer in a steam heating system can be caused by

A. filling the auxiliary boiler with cold water

B. steam admitted to a cold pipe

C. filling the auxiliary boiler with hot water

D. draining a soot blower line before cracking the steam supply valve

33. What is a function of the wearing rings used in most centrifugal pumps?

A. Absorb erosion of high velocity discharge stream

B. Seal pump shaft against entry of air

C. Isolate the discharge side from the suction side

D. Dampen the turbulent discharge flow

34. Which combination of the main shaft segments listed below, that are located furthest from the main engine, are connected by the inboard stern tube shaft coupling?

A. Line shaft and thrust shaft

B. Line shaft and stern-tube shaft

C. Thrust shaft and stern-tube shaft

D. Stern-tube shaft and tail shaft

35. An auxiliary engine turbo-charger makes strange noises when the load changes. The engine parameters however are absolutely fine. An external examination of turbocharger parameters as stated in the manual also reveals nothing. Would you

(a) Continue to run the engine and wait for some time

(b) Stop the engine for a while and make some checks

(c) Reduce the load of the engine

(d) Run it on steady load to make some checks.

36. 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

37. Which of the following can lead to premature failure of roller bearings?

A. Misalignment

B. Contamination

C. Shrinkage

D. Over greasing

38. WHICH PROCESS IS NOT DONE ON MILD STEEL?

A. Hot plating

B. Electrolysis

C. Explosion bonding

D. Metal spraying

39. Boiler not starting in 2 -3 times, what we do,

A. check fuel ignition system,

B. check fuel burning system

C. check furnace

D. all of the above

40. Sewage Plant Efficiency is gauged by

a) Suspended Solid

b)Coli count

c)Biological Oxygen Demand(BOD)

d)All

41. When oil carried over in steam drum

A. overheating of tubes,

B. corrosion of tubes

C. density of water is reduced

D. all of the above

42. Steam drum is used for

A. collecting of steam

B. collecting of water

C. equalising water in the tubes

D. collecting of precipitated salts of water

43. Steam drains should be

A. drained by gravity

B. short lateral length

C. should cover less head space

D. all of the above

44. Which of the group of method are used for priming of centrifugal pumps onboard ships?

A. Gravity tank, attached vacuum pump

B. Attached Vacuum pump, filling pump casing using a fresh water hose

C. Central priming system, attached vacuum pump, sea water priming


45. The crank web deflection readings of a diesel engine would be erroneous in which of the following conditions?

A. When the draught of the vessel has changed while readings were being taken

B. When cargo loading and discharging has been too rapid

C. When the crankcase temperature has changed substantially during the process of taking the readings.


46. Which of the following will be required to be done in order to reduce sulphur corrosion of Main Engine Components?

A. Increasing the atomization pressure of fuel injectors

B. Fitting exhaust valves with valve rotators

C. Running engine at or near normal sea load

D. Decreasing the F.O. purifier feed rate, running two purifier in series one acting as purifier and other as clarifier

47. 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

48. 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

49. about emergency fire pump...?

A)out of engine room

b)self priming

c)power should be outside e/r

d)all the above

50. Double entry impellers have a distinct advantage over single entry impeller. What is it?

A. They balance out the axial thrust

B. It gives a higher pumping efficiency

C. It is cheaper and easier to manufacture

D. The need of installing line bearing onto the pump shaft is eliminated

51. A refrigerant compressor will run continuously when there is

A. Too heavy cooling load on the systemB. Air in the systemC. Insufficient refrigerant in the systemD. Any of the above

52. Cause why cascade tank water temperature is high? OR What could be the reason why the feed pump can hardly pump in water to the auxiliary boiler causing the cascade tank water level to rise &temperature too high?

A. High ambient temperatureB. Clogged condenser water tubesC. Filter dirtyD. Low cascade water level

53. Where is the location of the backfire valve?

A. Boiler furnace

B. Scavenging area

C. Gas cylinder

54. During departure from a 2 weeks anchorage, the reason why the windlass cannot lift the anchor up is

A. Low lube oil tank levelB. Windlass defective by pass valveC. Anchor drag sunken objectD. Too cold hydraulic oil

55. A ballast pump is being used to deballast a fore peak tank which is full. It is seen that suction pressure is positive and discharge pressure is very low compared to rated discharge head. It indicates that:

A. Pump is not operating satisfactorily and pumping capacity is too low

B. Pump is not operating satisfactorily and pumping capacity is higher than rated, throttling of discharge valve is required

C. Pumping capacity is not affected by suction and discharge pressures

D. Pump is operating normally

56. What attachment can you find in air reservoir?

I – Safety/Relief valveII – Fusible plugIII – Bursting disc

57. Cavitation erosion occurs due to

A. Chemical action

B. Physical action

C. Chemical OR physical action

D. Combination of chemical or physical action

58. The lowest temperature at which a liquid as listed on the MSDS, gives off enough vapor to ignite in the presence of an ignition source is called its _______.

A. Flash point

B. Fire point

C. Ignition point

D. None

59. Boiler secondary drum pressure ............than primary drum pressure

A. Less

B. More than

C. Equal

60. Hydrophore frequent cut in and out. Why?

A. Air less

B. Air more

C. Setting diff close

61. When main engine is running in emergency condition which of the alarm can’t be bypassed.

A. LO low pressure

B. JCW high temp

C. Piston cooling water high temp

D. All

55. Why we do not prefer to run air two compressor together because

A. All below points

B. Too much maintenance

C. Too much power consumption

D. Loss of lube oil

SECTION 6

JANUARY 2013

1. The master or person in charge of a MODU is required to log

A. the date and hour of each fire drill

B. the names of all persons on board

C. only casualties which occur while underway

D. every event occurring on board

2. A simultaneous rise in stern tube forward seal tank and drop in level of header tank indicates_

A. Aft seal ring of forward seal assembly damaged or sealing disturbed by foreign object

B. Forward seal ring of forward seal assembly damaged or sealing disturbed by foreign object.

C. Either of the above


3. Bearing damage in a diesel engine onboard is indicated by

A. White metal in the crankcase

B. White metal in the lube oil filter

C. Knocking sound from the engine crankcase

D. Any of the above

4. In a D- type water tube boiler with a secondary steam drum and super- heater, the steam is heatedabove the boiling point of water in the _______

A. Primary steam drum

B. Risers

C. Super- heater

D. Secondary steam drum

5. Which of the following statements is false about corrosion due to galvanic action?

A. Metals close to the anodic end of galvanic series corrode in preference to the ones close to the cathodic end.

B. When any single metal exists in a system, it cannot corrode due to galvanic action.

C. Zinc is anodic to steel and is often used as a protective coating

D. Corrosion rate is affected by temperature

6. Which of the following statements is FALSE regarding gas carriers?

A. Shipboard generation of inert gas for cargo tanks is a requirement .

B. Shipboard generation of inert gas for inter tank barriers and holds is a requirement .

C. Gas carriers do not use ship's main boilers for generation of inert gas.

D. Gaseous nitrogen is produced on board in many gas carriers

7. Which of the following factors will have the greatest effect on the heating load within a conditioned space?

A. Solar gain

B. Infiltration and ventilation air

C. Occupants inside the space

D. Entertainment equipment within the space

8. During major repair work in enclosed space onboard

A. Keep log of entry and exit time of personnel

B. Keep adequate first aid equipment at the entrance

C. Provide refreshments


9. Before the longitudinal carriage feed of a lathe is engaged, you must be certain the

A. spindle clutch is disengaged

B. carriage clamp screw is loosened

C. carriage stop clamp is tightened

D. thread dial indicator is zeroed

12. In a compression type grease cup, the lubricant is forced into the bearing by

A. gravity flow

B. spring force

C. a pressure gun

D. a zerk fitting

13. Type of the tank is fitted semi and fully pressurized gas carrier

A. Type a

B. Type b

C. Type a and b

D. None

14. Surging indicates

A. Scavenge fire

B. exhaust manifold fire

C. Fault in fuel system

D. All

15. Engine cylinder relief valve lift indicates abnormal of what.

A. Fuel supply

B. Fuel injection

C. Exhaust temp

D. Exhaust pressure

16. Hydride formation in gas carrier can lead to a

A. Contamination of cargo

B. Seize of pump

C. Exothermic reason

D. None

17. Deep well cargo pump used in

A. Chemical carrier

B. Product carrier

C. LNG

D. All

SECTION NEW - 1

1. Which of the following statement is true if the oil temperature is allowed to become excessively high in the heaters?

A. Excessive temperature will increase oil viscosity that results to poor combustion

B. Excessive temperature will cause the oil to crystallize resulting in pulsating fires

C. The fuel will carbonize and its heating ability will be reduced

D. The fuel will ignite even it has not reached point of ignition

2. A drop in compression pressure in one cylinder of a diesel engine can be caused by ___________.

a. only fuel injection

b. burned valves

c. too late fuel injection

d. low fuel penetration

Some diesel engines are fitted with a thermometer in the cooling water outlet from each cylinder. If the cooling temperature from an individual cylinder begins to rise, what should you suspect?

a. That there is an overloading of cylinder

b. That there is an overloading of the adjacent

cylinder

c. That there is an increase blow-by of the cylinders

d. That there is an incomplete combustion in that cylinder

Which of the listed actions should be carried out if a ship is to be laid up for an indefinite period of time ______.

I – Boilers to be laid up wet should be completely filled

II – All fuel tanks should be cleaned & gas freed

III – All potable water tanks should be cleaned & disinfected

A. I only

B. II only

C. I & II

D. I, II & III

Adding trisodium phosphate in boiler water will _______.

I – Decrease salinity

II – Increase salinity

III – Decrease alkalinity

A. I only

B. II only

C. I & II

D. I, II & III

A shortage of refrigerant in the refrigeration system is indicated by ___________.

a. the compressor short cycling

b. high head pressure

c. high suction pressure

d. bubbles in the sight glass

Directional control v/v used in hydraulic p/p is contrlled

a)manually

b)mechanically

c)electrically

d) all

1. Electric and electro-hydraulic steering gear motors are required by Coast Guard Regulations (46 CFR) to be _________.

A. protected by a circuit breaker set at 125% and a thermal overload device

B. provided with a running motor overcurrent protection device

C. served by a single two conductor cable

D. served by two feeder circuits

Dezincification of brasses may be prevented by introducing which of the following additives during manufacturing brass?

A. 0.04% Nickel

B. 0.04% Cobalt

C. 0.04%Arsenic

D. 0.04%Tungsten

One cause of leaky valves in a low pressure air compressor may be attributed to

A. running with an air filter element different from that required by the original manufacturer's specifications

B. excessive operating hours without carrying out preventive maintenance

C. the compressor running too fast

D. excessive discharge pressure

The static suction lift of a pump is the difference in elevation between the

A. centerline of the pump and the level of the liquid in the suction well when the source of liquid is below the pump

B. centerline of the pump and the suction liquid level when

the source of liquid is above the pump

C. centerline of the pump and the level of the discharge liquid

D. liquid levels of the suction and discharge

Plate type heat exchangers are preferred over shell and tube type ones because____________

A. They can be cleaned more thoroughly .

B. Their capacity can be altered by adding or removing plates.

C. Turbulent flow and more margin for increased fluid velocity ensures less deposits and hence longer timeinterval between cleanings.

D. All of the above

Inert Gas System should be capable of delivering Inert Gas at the rate of at east_________________

A. 110% of the maximum rate of cargo discharge capacity of the ship

B. 133.33% of the maximum rate of cargo discharge capacity of the ship

C. 125% of the maximum rate of cargo discharge capacity of the ship

D. 90% of the maximum rate of cargo discharge capacity of the ship

Preferential tripping of electrical machineries prevents

A. Overloading of generators

B. Black out in engine room

C. Allows starting of large machineries


Which is the only gas product ,allowed by gas codes, to be burnt in ship's boilers?

A. LPG

B. Ethylene

C. Butane

D. LNG

Frequent cutting- in & cutting -out of a fresh water pump on a hydrophone system indicates which of the following?

A. Nothing abnormal

B. Excessive air charge

C. Insufficient air charge

D. The differential setting between cut-in and cut out is too low

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

35.You must have worked with mooring winch and windlass hydraulic systems. The cooling of hydraulic oil for the above system on large merchant ships is provided by:

A. There is no cooling arrangement as the system doesn???t require cooling

B. Air cooled hydraulic reservoir

C. Water cooled plate or shell type heat exchangers

D. Radiator and fan arrangement

1.In case of failure of the control system of a centrifuge,the correct sequence for manually desludginga purifier would be-

A.Stop feed-give sealing water-close sealing water -shut operating water-open and close desludging water quickly

B.Stop feed- shut operating water-open and close desludging water quickly

C.Shut operating water-stop feed- open sealing water for a short time then close-open and close desludgingwater quickly

D.Shut operating water- stop feed- open and close desludging water quickly

3.Liquid ring primer used for priming main and emergency fire pumps onboard

A.Is to be filled with water in the water tank to maintain water level

B.Is to be capable of automatic engagement and disengagement with drive shaft

C.Is to have sufficient capacity to exhaust air out from pump in all sea conditions

D.All of the above.

5.To prevent electric shock during electric arc welding

A.Wear dry clothes

B.Wear insulated shoes

C.Keep first aid equipment ready

D.None of the above

6.Back pressure valve in a refrigeration system with multiple chambers is fitted_____________

A. At the refrigerant exit end of evaporator of each chamber

B. At the refrigerant exit end of evaporators of chambers with higher temperature settings

C .At the refrigerant exit end of evaporators of chambers with lower temperature settings

D .None of the above

7.Inert Gas System on board tankers is used during which of the following operations-

A. Inerting of empty tanks

B. Inerting during crude oil washing

C. Purging before gas freeing

D.All of the above

22.To prevent main engine stoppage during periods of bad weather

A .Ensure lube oil level is topped up

B. Ensure over speed trip override switch set up to rough sea setting

C .Ensure reduced speed setting to prevent overload

D. All of the above

23.Subsequent to a oil spill in Engine Room and ingress of oil in the bilge wells ,the best course of action is to _______________________________

A .Use oil spill dispersant chemical in the bilge wells

B. Transfer the oily mixture and let it settle in the bilge holding tank/bilge separator tank

C .Transfer the oily mixture using a portable pneumatic pump to a waste oil tank and then physically demark and clean the bilge wells using environment friendly cleaner

D.Dilute the bilge wells by flooding with water and then use the general service pump to pump out the bilges

24.Amount of distilled water produced in fresh water generator onboard decreases with

A.Increase in vacuum in the fresh water generator shell

B.Decrease in sea water temperature

C.Decrease in efficiency of heat exchanger

D.Increase in sea water temperature

1.In case of an exhaust gas boiler fire ,which of the following is a suitable control measure?

A. Start frequent soot blowing

B. Increase main engine speed to blow away the soot particles on fire

C. Stop cooling water circulation to avoid leakage


3.Refractory damage in boiler furnace onboard is caused due to

A. Presence of moisture in the boiler before startup

B. Rapidly fluctuating temperatures inside boiler furnace

C. Overheating of boiler tubes due to lack of heat transfer from tubes due to scale

D. Boiler panting and vibrations

4.An economizer uptake fire in the engine room is extinguished by

A. Boundary cooling of the uptake

B. Injecting fixed fire fighting system if provided

C. Injecting water from the uptake


LNG STORAGE AND PUMPING DETERMINED BY WHAT PROPERTY

a. VAPR PR

b. PARTIAL VPR PR

FEB 2013

When air at a given temperature, contains the maximum amount of moisture for that temperature, the air is said to be

A. superheated

B. saturated

C. condensing

D. evaporating

Which of the following form of Inert Gas is not used on gas carriers?

A. Inert gas from combustion type generators.

B. Nitrogen from shipboard production system.

C. Pure nitrogen taken from shore.

D. Inert gas generated in ship's boilers.

A general service centrifugal pump used for aft peak ballasting is showing negative suction pressure and zero discharge pressure . What can be the probable cause?

A.Object 2

Discharge valve closed

B.Object 4

Increased clearance between impeller wear ring and casing ring

C.Object 6

Clogged suction filter

D.Object 8

None of the above

When one refrigerating machine serves several compartments and one compartment reaches the desired temperature , the temperature in that compartment is maintained by

A.Object 10

The expansion valve

B.Object 12

The solenoid valve

C.Object 14

The back pressure valve

D.Object 16

Any of the above

A leaking water tube in auxiliary boiler onboard is indicated by

A.Object 18

Increased water make up in the feed filter tank

B.Object 20

Difficulty in maintaining accurate boiler water level

C.Object 22

Decrease in the chloride levels of boiler water

D.Object 24

All of the above.

A leaking starting air valve on the diesel engine is identified by

A.Object 26

High temperature of the pipeline leading to the start air valve during operation

B.Object 28

Abnormal temperature of the starting air manifold during engine operation

C.Object 30

Abnormal exhaust temperature of the affected cylinder

D.Object 32

All of the above.

The heat removed from the refrigerant in the condenser of a refrigeration plant is the

A.Object 34

latent heat of expansion

B.Object 36

sensible heat of condensation

C.Object 38

heat of compression

D.Object 40

all of the above

APRIL 2013

Incresed pressure drop across exhaust gas economizer indication

A. Fouling of exhaust side

B. Fouling of steam side

C. No abnormality

D. Low load main engine

Oily bilge separated onboard permitted

A. Anchorage

B. When sailing coastal water less 12 Nautical mile from land

C. Drifting

D. none

Boiler water level control problem swell and shrinkage

A. Feed water flow

B. Drum level

C. Steam flow

D. None

The problems caused by shrink and swell are dynamic as well. When the amount of steam being withdrawnfrom the SG is suddenly increased, its pressure starts to fall until more heat can be transferred to the water. This drop in static pressure causes the vapor bubbles to expand, lifting more water into the NR area. The swelling-level effect causes the level controller (LC) to reduce feedwater flow at a time when a higher flowis required to match the higher demand for steam. The opposite effect"shrinking level"follows a decrease in steam withdrawal.

Sudden stoppage main engine at sea and same cannot restarted immediately damage

A. Stopping auxiliary boiler to save energy

B. Starting auxiliary boiler

C. Stopping fresh water generator

D. Engaging turning gear

76. steam stop valve is eased of its seat during boiler

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