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Comp 2 Flashcards

1
Q
  1. The gas turbine will not start simply by turning the burner on. It must be first be motored up to some minimum speed before the fuel is turned on. What is this minimum speed usually called?
    A. Starting speed
    B. Fuel-on speed
    C. Firing speed
    D. Coming-in speed
A

D. Coming-in speed

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2
Q
  1. What is one advantage of flash type evapirators, compared to submerged tube type evaporators?
    A. Less internal corrosion bacause of lower brine density
    B. Less feed water required for a flash evaporator
    C. Less scale formation in a flash evaporator
    D. Higher temperature evaporator for lower salinity of the distillate produced
A

D. Higher temperature evaporator for lower salinity of the distillate produced

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3
Q
  1. How does the desired rudder angle is attained by a typical double ram electro-hydraulic steering gear?
    A. Ram relief valves bypass oil to stop rudder movement
    B. Six-way valve shifts to the neutral position
    C. Follow-up gear takes the hydraulic pump off stroke
    D. Steering pump electric motor is de-energized by the transfer switch
A

B. Six-way valve shifts to the neutral position

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4
Q
  1. A disadvantage of a 4-stroke/cycle ove a 2-stroke/ cycle diesel engine is:
    A. Greater weight per horse power ratio
    B. The required use of scavenging ports
    C. Higher working temperature of piston and cylinder
    D. Intake valve temperatures higher than exhaust valve temparatures
A

A. Greater weight per horse power ratio

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5
Q
  1. The refrigerant gas returning to the compressor should be ______?
    A. Superheated
    B. Dense
    C. Saturated
    D. Flooded
A

A. Superheated

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6
Q
  1. Most large main propulsion diesel engines use a duplex lube oil strainer to:
    A. Decrease the time required between cleanings
    B. Remove all large and small foreign objects
    C. Ensure that all lube oil has been treated twice
    D. Ensure a positive flow of oil at all times
A

D. Ensure a positive flow of oil at all times

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7
Q
  1. Which of the dollowing controls the amount of fuel atomized by a return flow oil burner?
    A. Fuel oil return valve
    B. Atomizer orifice setting
    C. Fuel oil damper setting
    D. Burner register opening
A

A. Fuel oil return valve

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8
Q
  1. If there is more than one combustion fitted to the gas turbine and one of the burners had a ‘flame-out’, what safety measure is employed in order to avoid an eventual explosion?
    A. Steam-injection extinguishing system
    B. Fuel shutdown mechanism
    C. Cross-coupling of the air compressor
    D. Cross-coupling of the combustion chamber
A

D. Cross-coupling of the combustion chamber

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9
Q
  1. In a two stage flash evaporator, where is the heated feedwater vaporized?
    A. Distiller feedwater heater
    B. First and second stage flash chamber
    C. First and second stage vapor separator
    D. Feed inlet box
A

B. First and second stage flash chamber

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10
Q
  1. In refrigeration system the heat normally producing the flash gas at the thermostatic expansion valve, is it obtained from ______?
    A. The portion of liquid refrigerant which does not flash
    B. Exposure to the high ambient tenperature within the coil
    C. Exposure to the high ambient temperature of the cooled space
    D. The hot gas bypass connection at the three way valve
A

A. The portion of liquid refrigerant which does not flash

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11
Q
  1. Fuel oil injected into the cylinder of a diesel engine just after the piston passes top dead center, will.
    A. Increase engine load
    B. Decrease engine power
    C. Improve fuel economy
    D. Increase engine power
A

B. Decrease engine power

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12
Q
  1. You observed an efficiency drop caused by compressor fouling of the gas turbine. What is the most effective counter measure to carry out?
    A. Off-line washing
    B. On-line washing
    C. Turbine washing
    D. Compressor washing
A

A. Off-line washing

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13
Q
  1. In a 2-stage flash distilling plant, which pumpnis vented to the shell of the second stage in order to remive vapor from the pump suction?
    A. Feedwater heater drain pump
    B. Condenser circulating water pump
    C. Distillate pump
    D. Air ejector condenser drain pump
A

A. Feedwater heater drain pump

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14
Q
  1. Why are removable sleeves installed on centrifugal pump shafts?
    A. They increase the strength of the pump
    B. They can be economically replaced as they wear out
    C. They can be removed when it is necessary to lighten the weight of the pump
    D. They make it easier to replace the pump shaft packing
A

B. They can be economically replaced as they wear out

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15
Q
  1. To prevent air pockets from foaming in cetrifugal pump suction line installed angled from normal, any gate valve should be installed with the _______.
    A. Stem pointing upward at right angles to the pipe
    B. Stem horizontal or pointing downward below the pipe
    C. Bonnet above suction
    D. Centerline above the suction pipe centerline
A

B. Stem horizontal or pointing downward below the pipe

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16
Q
  1. Why does cebtrifugal bilge pump requires priming?
    A. Primarily to lubricate the shaft seals
    B. To intially unload the pump by having its head pressure equal to discharge the pressure
    C. Due to inability of this type of pump to lift water to cover the suction (eye) of the impeller
A

C. Due to inability of this type of pump to lift water to cover the suction (eye) of the impeller

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17
Q
  1. What should probably occur if excessive misalignment existed between a centrifugal pump and its power source?
    A. Shaft bearing will overheat
    B. Flashing will occurate the impeller eye
    C. Power consumption will be reduced
    D. Pump cavitation will increase
A

A. Shaft bearing will overheat

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18
Q
  1. If a centrifugal pump operating with a positive suction head vibrates, or becomes noisy, the cause could be______.
    A. Worn wearing rings
    B. Air leakage into suction line
    C. Excessive pump speed
    D. Insufficient venting
A

D. Insufficient venting

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19
Q
  1. How will you operate a centrifugal fire pump at reduced capacity?
    A. Adjust the relief valve
    B. Throttle the discharge valve
    C. Throttle the suction line
    D. Open the priming line
A

B. Throttle the discharge valve

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20
Q
  1. Which of the following type of valve best suited for throttling gas or liquid flow in a pipeline?
    A. Globe valve
    B. Plug cock
    C. Check valve
    D. Gate valve
A

A. Globe valve

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21
Q
  1. A centrifugal pump may fail to deliver water when first started if the ______.
    A. Seal ring is improperly located
    B. Pump is not primed
    C. Impeller is flooded
    D. Water seal pipe is plugged
A

B. Pump is not primed

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22
Q
  1. The net positive suction head of a boiler centrifugal feed pump should be calculated over and above the ______.
    A. Speed of the impeller
    B. Impeller ratio in the pump
    C. Pump capacity in GPM
    D. Feed water vapor pressure
A

D. Feed water vapor pressure

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23
Q
  1. Which pump installation would require an external source of sealing water?
    A. Auxiliary condensate pump
    B. Bilge pump
    C. Main circulator pump jacket water cooling
    D. Salt water service pump
A

B. Bilge pump

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24
Q
  1. What is the maintenance policy where the maintenance schedule is decided based on manufacturers’ recommendation or use of analytical techniques such as analysis of mean time between failures (MTBF) and reliability analysis?
    A. Planned maintenance
    B. Condition monitoring
    C. MTBF maintenance
    D. Breakdown maintenance
A

A. Planned maintenance

25
Q
  1. The aft stern tube seals are designated as No. 1, No. 2, No. 3, and No. 3S rubber lip seals, enclosed in a seal casing assembly, pressing against a rotating cylinder liner. What does No. 3S seal ring means?
    A. No. 3 Spare
    B. No. 3 shaft
    C. No. 3 Secured
    D. No. 3 Spring
A

A. No. 3 Spare

26
Q
  1. What activity is considered a major project where large expenses for repairs and off-hire are incurred over a short possible period?
    A. Dry-docking
    B. Propeller polishing
    C. Underwater hull cleaning
    D. Afloat repairs by shore gangs
A

A. Dry-docking

27
Q
  1. What is the easiest way of finding a crack on a very large rudder blade?
    A. By subjecting it to hydrostatic head pressure
    B. By Dye penetrant test
    C. By magnetic particle imaging
    D. By close visual inspection via an erected staging
A

A. By subjecting it to hydrostatic head pressure

28
Q
  1. During the ship’s dry-docking, why is it necessary to have facility of adjusting the height of the blocks on the ship’s bottom?
    A. In order to provide access for cleaning and painting the whole area of the ship’s bottom
    B. In order to distribute the load on the blocks due to uneven bottom plates
    C. In order to gain access to all the ship’s bottom plugs
    D. In order to gain access for repairing any distorted bottom plates
A

B. In order to distribute the load on the blocks due to uneven bottom plates

29
Q
  1. What the main advantage of predictive maintenance?
    A. Reduced requirement for sending the vessel to dry-dock
    B. Spares can be procured long before any maintenance schedules
    C. Avoidance of unnecessary maintenance work if it is still in good working condition
    D. Requirement for additional engine staff can be avoided
A

C. Avoidance of unnecessary maintenance work if it is still in good working condition

30
Q
  1. Generally done while the ship is in dock, what kind of repair method is done to replace the stern tube sealing rings with the shaft and the propeller in place?
    A. Inserting oversized seal rings to have a good tight fit
    B. Bonding repair by vulcanizing the new seal rings
    C. Removing the intermmediate rings and renewing the seals keeping it in intact condition
    D. Removing the cylinder liner for skimming and renewing the seals keeping it in intact condition
A

B. Bonding repair by vulcanizing the new seal rings

31
Q
  1. Sample of lube oil used within the steering system would be sent for analysis on a regular 3-monthly basis to detect contaminants, wear particles, and oil characteristics such as viscosity. The results will indicate the quality of the oil and presence of any internal wear so that internal inspection can be wavered by the Classification Society. What will only be required by the Class at the survey date?
    A. Non-follow up test
    B. Operational test
    C. Auto-isolation test
    D. Trip test
A

B. Operational test

32
Q
  1. Which part of the human body has the least resistance to electrical current?
    A. Fat nerves
    B. Skin
    C. Muscles
    D. Bones
A

D. Bones

33
Q
  1. What is the unit of conductance?
    A. Ampere
    B. Henry
    C. Farad
    D. Siemens
A

D. Siemens

34
Q
  1. What is called a survey based on Chief Engineer’s inspection report?
    A. Confirmatory Survey
    B. Conclusive Survey
    C. Special Survey
    D. PMS Survey
A

A. Confirmatory survey

35
Q
  1. What special tool is used to determine whether there is an abnormality with the stern tube bearing metal by measuring the variation in the clearance between the stern tube bearing and propeller shaft?
    A. Wear-down guage
    B. Depth guage
    C. Vernier caliper
    D. Dial type outside micrometer
A

A. Wear-down guage

36
Q
  1. Which is the simpliest, most obvious and most logical maintenance program that can be created which can immediately produce substantial energy savings on steam plants?
    A. Fouling reduction program on boiler tubes and furnace
    B. Adjustment of combustion air in relation to fuel flow program
    C. Insulation inspection program
    D. Leak detection program for hot water and steam on piping, flanges, and valves
A

D. Leak detection program for hot water and steam on piping, flanges, and valves

37
Q
  1. What are placed under the keel and bottom plates arranged on the bottom of the dry-dock, made of steel with wooden tops, and serve to support the vessel during the whole period of dry-docking?
    A. Stagings
    B. Wooden blocks
    C. Keel supports
    D. Keel blocks
A

D. Keel blocks

38
Q
  1. As per Classification Society Rules on Dry-docking, how many docking surveys are required in each five-year Special Survey, one of which is to coincide with the Special Survey?
    A. Two
    B. Five
    C. One
    D. Three
A

A. Two

39
Q
  1. The Class may accept UWILD which can be done during the intermediate docking between Special Surveys. What is the meaning of UWILD?
    A. Unforseen Wastage In Loaded Draft
    B. Under Water Inspection in Lieu of Dry-docking
    C. Un-obstructed Water Inspection in Lieu of Dry-docking
    D. Un-interrupted Way of Inspection in Lieu od Dry-docking
A

B. Under Water Inspection in Lieu of Dry-docking

40
Q
  1. What is a maintence policy where the basic preventive maintenance rountines, such as lubrication and machine adjustment are applied to the system at regular intervals, however, the repair or replacement is performed only when failure occurs?
    A. Corrective maintenance
    B. Unplanned maintenace
    C. Condition monitoring
    D. Planned maintenance
A

B. Unplanned maintenace

41
Q
  1. The stern tube aft seal consists of 4 rubber lip seals resting against the cylinder liner which rotates with the propeller shaft. In case the cylinder liner surface has worn out in way of the seal, what is done in order to relocate the seal to a new liner position?
    A. Install additional distance pieces in between the propeller boss and the seal casing assembly to move the seals aft to a new cylinder liner position.
    B. Remove the No. 1 intermediate ring and replace with a thinner one to relocate the No. 1 seal ring.
    C. Remove the two-part distance piece, then tighten the securing nut to displace the seal casing assembly forward to a new cylinder liner position.
A

C. Remove the two-part distance piece, then tighten the securing nut to displace the seal casing assembly forward to a new cylinder liner position.

42
Q
  1. What is a maintenance policy where the maintenance decision is based on the current condition or reliability of the system or equipment and where this policy stipulates the monitoring of the machinery and acting only upon its condition?
    A. Breakdown maintenance
    B. MTBF maintenance
    C. Predictive maintenance
    D. Unplanned maintenance
A

C. Predictive maintenance

43
Q
  1. What document does shipyard, who built the vessel provides, which gives information on the exact locations where the blocks should support the hull when the vessel is dry-dock?
    A. Docking plan
    B. Shell expansion plan
    C. General arrangement plan
    D. Ship’s particulars
A

A. Docking plan

44
Q
  1. What is termed as the inspection of the outside of the ship’s bottom while afloat in lieu of a dry-docking measurements of shaft and rudder bearing clearances as applicable?
    A. Underwater Survey (UWS)
    B. Continuous Hull Survey (CHS)
    C. Underwater Examination (UWE)
    D. Dry-docking Survey (DDS)
A

A. Underwater Survey (UWS)

45
Q
  1. Oil rankers, including ore/oil and ore/bulk/oil ships, chemical tanker and bulk carriers are required to have their intermediate docking between Special Survey in drydock once they are over ______.
    A. 5
    B. 20
    C. 15
    D. 10
A

C. 15

46
Q
  1. Classification Society will allow some machinery items to be surveyed in rotation, over a number of annual cycles. There surveys are done over the five year cycle of surveys. What is this called?
    A. Continuous Survey of Machinery
    B. Annual surveys
    C. Continuous Hull Survey (CHS)
    D. Confirmatory Surveys
A

A. Continuous Survey of Machinery

47
Q
  1. What is the importance of rudder bottom plug?
    A. If accummulated water comes out from the plug, it indicates the rudder plating is cracked and hence sea water has found its way into the rudder causing its sluggish movement.
    B. In order to determine if only air is present inside the rudder to ensure that it is balanced.
    C. If no water comes out from the plug, it indicates loss of vacuum insidebthe rudder.
A

A. If accummulated water comes out from the plug, it indicates the rudder plating is cracked and hence sea water has found its way into the rudder causing its sluggish movement.

48
Q
  1. Who specifically needs the docking plan in advance so that they can arrange the block accordingly before flooding the dock prior to dry-docking the vessel?
    A. Ship repair manager
    B. Dock master
    C. Dock diver
    D. Vessel superintendent
A

B. Dock master

49
Q
  1. What is the main reason why the Classification Society can allow the Chief Engineer to survey most of the machinery items under his supervision?
    A. To reduce the survey cost to Owners/Operators.
    B. To allow the ship to just operate the machinery without the necessary overhauling.
    C. To allow the Technical managers to know the capabilities of their Chief Engineer on board.
    D. To train tje Chief Engineer insurveys and inspections
A

A. To reduce the survey cost to Owners/Operators

50
Q
  1. What is termed as the inspection of the outside of the ship’s bottom while afloat as part of the Passenger Ship Safety Renewal Survey?
    A. Underwater Diving Operations (UWDO)
    B. Underwater Survey (UWS)
    C. Ship Vertical Bottom Inspection (SVBI)
    D. Underwater Examination (UWE)
A

D. Underwater Examination (UWE)

51
Q
  1. What causes excessive sparking at the brushes of commutator?
    A. A flux in the commutating zone
    B. A loose commutator bar
    C. Worn brushes and reduced spring pressure
    D. A high commutator bar and increased spring pressure
A

C. Worn brushes and reduced spring pressure

52
Q
  1. The Chief Engineer will be instructed by Classification Society that he is eligible to undertake the surveys on Class behalf. However, below are the points which he is supposed to undertake EXCEPT for which one?
    A. He will be informed of specific items he can and cannot survey.
    B. When items are due for survey, it is prudent that they are also required to be overhauled.
    C. The C/E should endeavor to ensure that the overhaul or PMS routine and survey are due within the same time period.
    D. He can survey and witness the opening and setting pressures of boiler safety valves.
A

D. He can survey and witness the opening and setting pressures of boiler safety valves.

53
Q
  1. Dry-docking forms a critical part of the ship’s overall maintenance policy affecting safety, and requires the dollowing EXCEPT which one?
    A. Careful preparation
    B. Detailed planning
    C. Crew change scheduling
    D. Project coat control
A

C. Crew change scheduling

54
Q
  1. What maintenance policy is defined as maintenace carried out after failure detection which is subdivided into “immediate corrective maintenance” (in which work starts immediately after a failure) and “deferred corrective maintenance” (in which work is delayed in conformance to a given set of maintenance rule)?
    A. Corrective maintenance
    B. Unplanned maintenance
    C. Planned maintenance
    D. Condition monitoring
A

A. Corrective maintenance

55
Q
  1. The HSSC Guidance Resolution specifies that a passenger ship’s bottom inspection, as required by SOLAS regulation 1/7 , should be carried out annually, with two inspections in dry-dock in any five year period. What is the meaning of HSSC?
    A. Harmonized Survey on Ship’s Condition
    B. Harmonized System of Survey and Certification
    C. Hull System of Survey and Certification
    D. Hull Safety Survey Condition
A

B. Harmonized System of Survey and Certification

56
Q
  1. What is the main advantage of running the main engine under slow-steaming?
    A. Increase of specific fuel oil consumption.
    B. Big savings on fuel consumption over long days voyages.
    C. Improved engine combustion quality due to running two auxiliary blowers.
    D. Reduces wear on main engine parts.
A

B. Big savings on fuel consumption over long days voyages

57
Q
  1. Which maintenance can affect the ship energy efficiency quite significantly leading to a major energy saving?
    A. Steering gear maintenance
    B. Hull and propeller cleaning
    C. Navigational equipment maintenance
    D. Main engine overhaul, adjustment and tuning
A

B. Hull and propeller cleaning

58
Q
  1. The aft stern tube seals are designated as No. 1, No. 2, No. 3, and No. 3S rubber lip seal, enclosed is a seal casing assembly, pressing against a rotating cylinder liner. Which seal is nearest the propeller?
    A. No. 3 seal ring
    B. No. 3S seal ring
    C. No. 1 seal ring
    D. No. 2 seal ring
A

C. No. 1 seal ring

59
Q
  1. What is a maintenance policy where the approach is based on a model of the time that elapsed between maintenance period which takes into account the mechanisms of failure?
    A. Unplanned maintenance
    B. Failure-based maintenance
    C. Planned maintenance
    D. Conditioning monitoring
A

C. Planned maintenance

Competence (7 decks)

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