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問題一覧
1
The most common diesel engine fuel system problems are caused by
dirty fuel
2
If an operating horizontal centrifugal pump becomes air bound, you should vent it at the
top of the casing
3
a bilge pump is able to develop some vacuum, but is unable to sufficiently pump out the bilges, you would check for _
all of the above
4
Which of the following is the purpose of heating the fuel oil?
easy transfer and meet parameter for ignition quality
5
What should you do when bunkering is completed? I - blank the line II - air blow supply hose to ship or shore III- drain the supply hose content to a drip pan
I, II and III
6
What is used to remove the remaining water in the ballast tank when the level is very low?
stripper
7
If auxiliary machinery vital to the main propulsion system is not provided with independent duplicate systems, which of the systems listed would satisfy regulations if serviced by two pumps? (46 CFR)
all of the above
8
Why are removable sleeves installed in a centrifugal pump shafts?
they can be economically replace as they wear out
9
Which of the following is the possible cause why a lube oil pump fails to build up discharge pressure?
suction valve is closed
10
Which of the following types of steam traps operates on the principles that hot water flashes to steam when its vapor pressure is reached?
impulse
11
An independent bilge suction is required for __
machinery space bilges
12
What device is used to monitor the oil content of th ebilge water during pumping out operation?
ODM (Oil discharge monitor)
13
Which of the following physical or chemical property of fuel that greatly affects the good efficiency of the pump during the transfer of fuel oil from one tank to the other?
viscosity
14
Which of the following pumps transfer produced water to the different fresh water tanks?
distillate pump
15
On at two stroke main engine, where is the oil collected when you shut down themain lubricating oil pumps?
in the sump tank
16
Loss of pump efficiency may be the result of
a leak in a gasket on the suction side of the pump
17
Which of the following is used as moisture arrester and dryer in the refrigeration system?
silica gel
18
It is necessary to transfer fuel oil to the settling tanks in order to __
Allow the sediments and water to settle
19
What is fitted on the discharge side of the main sea water pump the prevents the pump to turn to the opposite direction when it is not running?
check valve
20
Who is in-charge of the ballast operation?
Chief Officer
21
On the lubricating oil transfer system where is the strainer fitted?
before the pump
22
Which type of centrifugal pump is used when relatively high pressure and small capacity are required?
diffuser pump
23
Maintaining the proper fuel oil temperature will result in
improved atomization
24
If you are underway at full speed on a vessel fitted with a main propulsion turbine pressure lubrication system, which of the following actions will be necessary upon complete loss of lube oil pressure?
first close the ahead throttle valve, then open the astern guardian valve, and then open the astern throttle to admit astern steam as quickly as possible
25
What will happen if one of the bilge system suction valves does not properly seat?
Bilge system will lose vacuum and prevent the other bilges from being pumped out
26
The minimum temp requirements for fuel oil in storage tanks is related to the
pump-ability of the oil
27
Which sea chest suction is use when the ship is in port?
High suction sea chest
28
Which of the following is provided so that air compressor DOES NOT run continuously when there is demand for compressor air?
air reservoir
29
What is fitted in the fire line to cut off section of the system in case of leak or to increase pressure on another section?
isolation valves
30
Failure of the fuel oil service pump to maintain fuel oil flow to the burner could be caused by
dirty fuel strainers
31
What kind of document do you need to complete prior commencing bunkering operation?
bunkering plan
32
Where would a coarse screen wire-mesh strainer normally be found on a diesel engine lubrication system?
pump suction line
33
An accumulator used in a hydraulic starting system is generally located between the __
pump and the starting motor
34
If a centrifugal bilge pump were continually operated with the discharge valve closed the
pump would overheat
35
The highest pressure in any closed diesel engine fresh water cooling system is at the
cooling water pump outlet
36
Which of the following is fitted in an air tank to eliminate any oil/water accumulation?
drain valve
37
After starting the main lube oil pump in a gravity-type lube oil system, you should verify that the gravity tanks are full by
looking at the overflow sightglass
38
If you completely fill the pressure tank in automatic fresh water steam, what would happen?
pump would stop
39
Is a bunkering checklist required for internal transfer of HFO on boad if you are transferring duel from a storage tank to another storage tank?
only when instructed by the chief engineer