%20scale(3)'%3E%3Cpath%20id='s'%20d='M0,-30%2017.63355,24.27051%20-28.53171,-9.27051H28.53171L-17.63355,24.27051z'%20fill='%23FF0'/%3E%3C/g%3E%3Cuse%20xlink:href='%23s'%20transform='translate(300,60)%20rotate(23.036243)'/%3E%3Cuse%20xlink:href='%23s'%20transform='translate(360,120)%20rotate(45.869898)'/%3E%3Cuse%20xlink:href='%23s'%20transform='translate(360,210)%20rotate(69.945396)'/%3E%3Cuse%20xlink:href='%23s'%20transform='translate(300,270)%20rotate(20.659808)'/%3E%3C/svg%3E){kind=small}
Search for current vacancies:
Show filters
Search in the database of seafarers' resumes:
Online testing: Test online CES 5.1 for Ch-Eng / 2nd-Eng
Select the test mode:
Education
Online test
Description
The test consists of random questions on a selected topic.
Question 1 from 90
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31
- 32
- 33
- 34
- 35
- 36
- 37
- 38
- 39
- 40
- 41
- 42
- 43
- 44
- 45
- 46
- 47
- 48
- 49
- 50
- 51
- 52
- 53
- 54
- 55
- 56
- 57
- 58
- 59
- 60
- 61
- 62
- 63
- 64
- 65
- 66
- 67
- 68
- 69
- 70
- 71
- 72
- 73
- 74
- 75
- 76
- 77
- 78
- 79
- 80
- 81
- 82
- 83
- 84
- 85
- 86
- 87
- 88
- 89
- 90
Among working conditions listed below which one is required for every propulsion engine of lifeboats?
When the lifeboat is flooded
For a period of at least 72 hours
Propeller permanently driven by the engine
Self-starting and launch procedure simultaneous
Which one of the listed requirements regarding lifeboat equipment do not correspond to present regulations? All lifeboat equipment shall:
be made of fire-retardant material
be secured in the lifeboat (except boat-hooks) by lashings, storage in lockers, compartments, brackets or similar arrangement
be as small and of as little mass as possible
be secured in a manner as not to interfere with abandonment procedures
What types of gases are not allowed as fire-extinguishing medium for fixed gas fire-extinguishing system aboard ships? (SOLAS II-2/5.1.1)
Fuel combustion gases
Halogenated hydrocarbon gases
Toxic gases
Carbondioxide gases
What is the maximum allowed suction head for fire pumps? (SOLAS II-2/4.3.3.2.5)
1.5 metros
3 metros
4.5 meters
9 metros
*What is the expansion ratio of the foam produced by the fixed low-expansion foam fire-extinguishing system of an engine room?
Less than 20 to 1
Less than 12 to 1
Less than 5 to 1
Greater than 20 to 1 but less than 50 to 1
If circumstances permit, how should low expansion foam be applied to oil burning in the bulkhead of the engine room?
The foam should be applied to the centre of the fire.
The foam should be aimed at about 45 degrees upwards so that it can drop onto the fire
The applicator should be used in a sweeping motion to spread the foam over the surface.
The foam should be aimed at the bulkhead behind the fire and allowed to spread out slowly over the fire.
The main risk for people when using CO2 as an extinguishing agent in a closed space is:
Air suppression
Toxicity
Reduction of visibility
Low temperature at the nozzle
*The smoke detector (fire indicator) indicates a fire in a cargo hold loaded with general cargo; this is immediately followed by a heavy smell of fire. What action should be taken first?
Inspect the scene before deciding the method to be used for fire-fighting
Start the fire pumps, open the hatches and start fighting the fire with fire hoses
Use the ship's central gas-extinguishing system to put out the fire
Close the ventilation system and other openings to the hold in order to choke the fire
In case of a fire on the line in an oxyacetylene-line gas welding equipment, what action should be taken?
Close the valves on both bottles, first the acetylene and then the oxygen bottle
Do not close any valve and attack the fire, preferably with powder
Close the valve(s) on the acetylene bottle only
Close the valve(s) on the oxygen bottle only
Considering the range of sensitive liquid chemicals which routinely require wall-wash prior to loading, what product is mainly used as the rinsing agent in wall-washing?
Water.
Iso-propanol.
Industrial Ethanol.
Methanol.
What does the term DISCHARGE mean, as used in the Oil Pollution Regulations?
Dumping
All the other alternatives
Leaking
Spilling
For how long is the health certificate valid for a seafarer in foreign trade?
No time limit.
Two years.
One year.
Three months.
Who is responsible for keeping the required official publications onboard?
The radio officer.
The owner.
The authorities.
The master.
In US waters "Oil Pollution Act of 1990" was activated in August 1993. What is the main issue for the introduction of the act?
To prevent oil spills in US waters?
To enforce owners to use equipment of higher standards that those of today?
To encourage owners to build double hull vessels for trading US waters?
To improve safety measures onboard?
Unconscious casualties who are breathing and whose hearts are beating should be placed in the Recovery Position. Why is this position so important?
The position ensures that an open airway is maintained.
Because it keeps the heart beating.
The recovery position makes it easy to maintain any kind of bleeding.
The position prevents the patient from falling asleep.
What is the first sign and symptom of a Cardiac Infarction?
Skin may be red and loss of movements in the right arm may occur.
Possible frothing at the mouth.
Strong and painful pulse.
Sudden crushing, vice-like pain in the centre of the chest.
There are three levels of burning, namely:*Superficial *Intermediate*Deep burns (also called full-thickness burns) A large burn will almost certainly contain areas of all three grades. How many per cent of the body may be burned before the danger of lifethreatning shock occurs?
15 percent.
4 percent.
9 percent.
35 percent.
During loading of oil, you notice oil on the water near your vessel. What should you do first?
Notify the terminal
Search the vessel for leaks
Notify the Coast Guard
Stop loading
You are on a vessel 60 nautical miles off the coast of the nearest land, Algeria, in the Mediterranean Sea. Are you allowed to dump empty glass bottles overboard ?
Yes, the bottles can be dumped if they are ground so that the resulting particles can pass through a screen with 25 mm openings
Yes, the bottles can be dumped if they are ground so that the resulting particles can pass through a screen with 50 mm openings
Yes, glass bottles can be dumped overboard
No, glass bottles can not be dumped overboard
Give the meaning of the following symbol
CO2 horn
CO2 battery
Portable fire extinguisher
Area protected by CO2
Give the meaning of this symbol:
lifebuoy with light
Llfebuoy with light and smoke
lifebuoy with line
lifebuoy with line and light
*You are on board a cargo ship. The ship is heavily listing to starboard, making impossible the launching of the survival craft stowed on this side. Lifeboats and liferafts are equally distributed on each side of the vessel. What should be the total number of persons that can be accommodated in the remaining survival craft stowed on the port side ? (*) N is the total number of persons that vessel is permitted to carry.
at least 150 % N (lifeboat capacity: 100 % N; liferaft capacity: 50 % N) (*)
at least 200 % N (lifeboat capacity: 100 % N; liferaft capacity: 100 % N) (*)
at least 100 % N (lifeboat capacity: 50 % N; liferaft capacity: 50 % N) (*)
at least 150 % N (lifeboat capacity: 50 % N; liferaft capacity: 100 % N) (*)
Which of the following features is required for an anti-exposure suit ?
has inherent buoyancy of at least 70N
is marked with the name of the vessel to which the appliance belongs
is made of such a material that it cannot be torn
can be continously worn without impeding every duties to be performed by the wearer when in normal watch on the bridge
The thermal insulation provided to the wearer of an anti-exposure suit is sufficient to ensure that the wearer's body core temperature does not fall at a rate of more than:
0.5°C per hour after the first 1.5h immersion in calm water at a temperature of 5°C
1.5°C per hour after the first 2,5h immersion in calm water at a temperature of 5°C
1.5°C per hour after the first 0.5h immersion in calm water at a temperature of 5°C
1°C per hour after the first 2h immersion in calm water at a temperature of 5°C
*Give the meaning of the following symbol
Release bowsing tackles
Release grips
Release painters
Release falls
Which part of the human body out of the list given after is not considered to allow maximum heat exchange with the surrounding fluid (air/water)?
groin
feet
abdomen
face
Which of following items shall be included in an abandon ship drill?
Checking the distress signal rockets and other distress signals.
Checking passenger's immersion suits.
Checking the lifeboat provisions and supplies.
Checking that lifejackets are correctly donned.
The Training Manual shall contain instructions and information on the life-saving appliances and the best method of survival. The training manual shall contain detailed explanations of crew duties in relation to emergency situations. Which of the following tasks or duties shall be included in the manual according to present regulations?
The use of oars and other propulsion equipment for survival crafts.
Best use of the survival craft facilities in order to survive.
The use of navigational equipment for survival crafts.
The use of on-board communication equipment.
Breathing apparatuses is an important piece of equipment for being able to fight a fire onboard a vessel. What routine precautions to be observed with regard to use and maintenance of such equipment?
That personnel having a beard are not selected as smoke divers.
All the mentioned alternatives.
That the equipment always to be kept cleaned,checked and bottles are recharged immediately upon use, and frequently inspected.
That personnel that are appointed as smoke divers, primarily are given a shore based proper basic education and training.
Anyone of the crew who is assigned to watch duties in ports has a number of important tasks to carry out. Which one of the listed tasks has to be included in the watchman's duties?
Checking the trim of the vessel.
Checking the moorings for tightness/slack.
Checking the number of persons entering/leaving the vessel.
Checking the safe and secure handling of cargo.
For which duties are gear and screw pumps normally employed?
Bilge pumping.
Main sea water circulation systems.
Fuel and lubricating oil services.
Jacket cooling water circulation for diesel engines.
At what temperature is it recommended that frozen fish is stored?
0degrees Celsius.
Between 1 and 4 degrees Celsius.
-2 degree Celsius.
-20 degrees Celsius.
A large electric motor is being removed from a main seawater pump with the aid of the engine room crane. Which is the best method of starting the lift from the options given?
Use the 'inch up' facility on the crane to 'break' the motor free after slackening all of the retaining bolts.
Use a suitable chain block suspended from the crane hook to 'break' the motor free after slackening all of the retaining bolts.
Use the full hoist facility on the crane to 'break' the motor free after slackening all of the retaining bolts.
Use the full hoist facility to lift the motor clear in one action after removing all of the retaining bolts.
It is important that tools are in good condition when they are being used for maintenance. Incorrectly sharpened tools can be dangerous. Which of the following tools can be safely sharpened using a pedestal grinder?
Steel drill bit.
Brass chisel.
Hacksaw blade.
Wooden wedge.
Sounding pipes in the engine room are normally fitted with deadweight cocks and screw caps. Which of the following statements is correct?
Caps and cocks should be closed at all times, except when sounding tanks, to prevent ingress of water or oil into the engine room in case of tank bottom damage or overflow.
Deadweight cocks should be fastened in the open position to save time when sounding the tanks.
It does not matter where the cocks/caps are unless the tank is in use.
Caps should be placed on top of sounding pipes to keep the engine room tidy.
Many modern large slow speed diesel engines used for main propulsion operate with a so called constant pressure turbocharging system. What is meant by constant pressure when used to describe such a turbocharging system?
Pressure variations in the scavenge air supply are avoided by supplementing the air supply with air from the auxiliary blowers so keeping a constant pressure across the load and speed range.
Pressure variations at the turbocharger inlet are damped out due to the large volume of the exhaust receiver and the short lengths of pipe from individual cylinders.
The exhaust pipes from groups of three cylinders are joined together before entry into the turbocharger so that the exhaust pulses from each cylinder cancel each other giving a constant inlet pressure.
The exhaust gas pressure is maintained constant by using a bypass waste gate to dump excess pressure at high engine loads.
During inspection of a cylinder of a large slow speed diesel engine it is noted that there are hard deposits around the upper part of the piston crown above the top ring groove and also some evidence of scuffing on the liner wall. From the options given select the one which is the most likely cause of this problem.
The piston cooling is inadequate causing overheating.
The fuel oil being used has too high a sulphur and ash content.
Insufficient cylinder oil is being supplied.
Cylinder oil with TBN to great for fuel grade is being used.
How should packaged units be secured below decks?
By means of adequate timber shoring and wedging for individual units
By means of adequate wire lashings for units grouped together
By making a chock-a-block stow so that units will not shift
By means of adequate timber shoring and wedging for units grouped together
In a closed loop control system the error signal is derived from which of the following?
The tolerance of the feedback sensor
The process and the feeedback sensor
The demand and the feedback signal
The process and the demand
A deaf man is reading the paper in the lounge when the emergency alarm sounds. How do you expect him to react?
He will ask the crew for help.
He will get up and go to the muster station.
He will ask someone what is going on.
He will continue reading the paper.
The earth lamps in a 3-phase system indicate as follows: Red= bright Yellow= dark Blue= dim . Which fault condition shown as red - yellow - blue is correct?
light earth - hard earth - no fault
no fault - hard earth - light earth
hard earth - light earth - no fault
light earth - no fault - hard earth
During synchronising, the incoming generator should be running slightly "fast" compared to the busbar frequency.This is to ensure that the:
Incomer picks up as a generator
Incomers reverse power trip is tested
Incomer picks up as a motor
Most rapid synchronising action is achieved
How many fast rescue boats are required to be carried by a passenger ship of 500 GRT and above?
One fast rescue boat on each side of the vessel
One fast rescue boat and one rescue boat on each side of the vessel
Fast rescue boat to accommodate 50 % of the passenger on each side
At least one of the rescue boats shall be a fast rescue boat
If a cargo is heated, which of the following happens?
Its weight does not change, but its volume increases - it expands.
Its volume does not change, but its weight decreases - it gets lighter.
Its weight does not change, but its volume decreases - it contracts.
Its volume does not change, but its weight increases - it gets heavier.
This circuit consists of a voltage source V, a change-over switch S, a resistor R and an inductor L. The voltage/time figures 1 to 4 show possible changes in the voltage V(L) in case the switch S is suddenly shifted from position 1 to 2 at time t = 0. Only one of the diagrams is correct. Which?
Figure 4
Figure 2
Figure 3
Figure 1
Which symptoms would indicate piston blow-by when operating a 4 stroke trunk piston type engine ?
Increased pressure in the air inlet manifold.
Increased pressure in the crankcase and smoke at the crankcase vent.
Smoke and sparks from the scavenge manifold drains..
Increased temperature in the inlet air manifold on the engine.
What is the definition of DEAD BAND?
The largest difference in the output signal for the same change in the input signal.
The change needed in the input signal to produce a change in the output signal.
The change in the output signal produced by a certain change in the input signal.
A missing electrical signal.
What temperature defines "hot" water in the context of tank washing on a chemical tanker?
A minimum of 10 degrees Celsius above the discharge temperature of the cargo.
At least 40 degrees Celsius.
At least 60 degrees Celsius.
At least 70 degrees Celsius.
In the figure, which letter indicates what is known as "mooring bits"?
The mooring bits are indicated by B, in the figure
The mooring bits are indicated by C, in the figure
The mooring bits are indicated by D, in the figure
The mooring bits are indicated by A, in the figure
On a container vessel what effects would exposure to anhydrous ammonia in moderate concentrations have?
Unconsciousness
Loss of memory
Death
Choking and possible loss of eyesight
How should additional lashings be applied to vehicles if they do not have sufficient lashing points?
Pass lashings over the vehicles’ axles
Pass lashings over the body of the vehicles
Secure the vehicles’ wheels
Secure the front and rear bumpers
When would the Chief Officer wish to consult the First Engineer?
The Chief Officer would wish to consult the First Engineer whenever a hydraulic tank need to be filled.
The Chief Officer would wish to consult the First Engineer on all matters related to pollution.
The Chief Officer would wish to consult the First Engineer when the cargo hold bilges are not emptying, despite the bilges being pumped out.
The Chief Officer would wish to consult the First Engineer when items of engine room machinery require maintenance.
What is the purpose of the accumulation test required by Classification Societies for boiler safety valves before the valves can be approved?
To check the pressure at which the safety valve will reset.
To check that the valves have sufficient discharge capacity when operating to limit the build up of pressure when the boiler is on full firing rate.
To check how high the boiler pressure will go before the safety valve operates.
To check that the maximum firing rate can raise the pressure above normal working pressure.
On a General Cargo Vessel, what do Tonnes per Centimeter Immersion (TPC), Moment to Change Trim by one Centimeter (MCTC) and Longitudinal Centre of Floatation (LCF) have in common?
They vary with small angles of heel
These vary with the gross tonnage of the vessel
They vary with changes in displacement
They remain unaffected by changes in displacement
What causes cargo sweat on a Bulk Carrier?
Cold and moist air introduced into a warm cargo hold
Warm, dry air being introduced into the cargo hold
Warm air introduced into a cargo hold
Warm and moist air introduced into a cooler cargo hold
With reference to using centrifuges for cleaning fuel and lubricating oil what is the difference between a purifier and a clarifier.
Clarifiers are used when water is present in the oil.
In a clarifier only solids are removed from the oil, whereas in a purifier both solids and water are removed from the oil
Purifiers are used when only solids are present in the oil.
There is no difference, both use centrifugal force
ISGOTT draws attention to the risk of electrostatic potential in a mist produced by using oil and water mixture in Crude Oil Washing operations. How does the Guide recommend this is avoided?
If a slop tank is to be used to supply oil to drive a Crude Oil Washing operation in a cargo tank, then that slop tank must not have contained slops with a water content of more than 2%.
As washing begins, any water observed in the stream should be diverted to a slop tank, before Crude Oil Washing af any cargo compartment is commenced.
Crude Oil Washing, where the oil source is stored in a slop tank or other tank that has previously contained slops, should be avoided.
Before washing begins, any tank that is to be used as a source of oil for Crude Oil Washing should be partly discharged to remove any water that has settled out during the voyage. The discharge of a layer of at least 1 metreis necessary for this purpose.
On a General Cargo Vessel, what should a cargo lashing plan comply with?
The cargo securing manual
Master's instructions
Charterers? instructions
Shipper's instructions
Measurement of oil cargoes is often achieved with a "UTI" device. What do the letters "UTI" stand for?
Uniform Tank Indicator.
Uncorrected Tank Innage.
Ullage Topping Instrument.
Ullage Temperature Interface.
When 3 phase alternators are operating in parallel, it is very important that the reactive load is evenly shared so that the total alternator loads are evenly shared. If the total alternator load is the vector sum of active and reactive loads, which side of the vector diagram (power traingle) shown represents the reactive load?
Either (X) or (Y)
None of the mentioned alternatives
(X)
(Y)
For a low pressure boiler, after testing the water cloride level, it is found to be 500 PPM, what action would You take?
Do nothing.
Increase dosage.
Decrease dosage.
Blow down boiler and check condenser for leakage.
On the figure there are four (4) possible definitions of the term "AFT" shown. Which one is the correct one?
Aft is defined as B on the figure
Aft is defined as D on the figure
Aft is defined as C on the figure
Aft is defined as A on the figure
What is the purpose of a fire wire?
A wire for pulling fire-hoses up to the top bridge
A wire for pulling burning ships off the pier
A wire for handling fire buckets
A wire for securing the Fire Tug alongside a burning ship
Is it required to have supplementary emergency electric lighting on board passenger ships?
No, passengers should bring their own flashlights
No, reflective marking indicates the escape routes
Yes, all passenger public spaces and alleyways shall be provided with supplementary electric lighting
What causes deterioration of a hatch cover hydraulic system?
Extremes of weather
Repeated hatch cover operations
Ice accretion on piston jackets
Dust and cargo particles around the piston seals
You have made a turning circle at full speed in deep water. You are now going to make one with initial speed, slow ahead. Do you think the diameter will differ from that of initial full ahead?
Yes, it will be much smaller with slow ahead
Yes, there will be a large difference in the turning diameter between full and slow ahead
Yes, it will be much greater with slow ahead
The diameter will be the same whatever initial speed we have when starting the turn
Which of the following symptoms would indicate that the filter drier in a refrigeration circuit has become blocked?
A hammering noise from the drier.
A pressure rise before the drier.
A large temperature drop across the drier.
A hammering noise from the compressors.
When will a ‘D’ ring not be an effective lashing point?
When painted
When it is oil-stained
When it is covered in grease
When its retaining collar is torn
Which is the most important factor in the safety awareness of the ships crew?
The safety awareness of the senior officers
The level of emergency-preparedness
The quality of emergency drills
The shipboard training provided
Under which IMDG Class is fishmeal carried when not treated with anti-oxidant?
Class 9 - Miscellaneous dangerous substances and articles
Class 4.1 - Flammable solid
Class 4.2 - Flammable solid
Class 5.1 - Oxidizing substance
To prevent inadvertent leaks, bunker manifold not in use should:
Have blank flanges fitted and tightened with some bolts in place
Have blank flanges fitted with gaskets and tightened with all bolts in place
Have blank flanges fitted with gaskets and tightened with some bolts in place
Have blank flanges fitted and tightened with all bolts in place
What is the minimum information to be given on a dangerous goods declaration on a General Cargo Vessel?
IMO Class, weight, cargo brand name, stowage requirement
Gross and net weight, volume of cargo, proper shipping name
IMO Class, UN Number, Gross weight, number of units of cargo, Proper Shipping Name
UN Number, Volume of units, stowage requirements, weight, centre of gravity
Which electronic component or system of components is this graphical symbol illustrating ?
Battery charger
Auto transformer
Inverter
Low pass filter
What effect would a blocked steam connection to a boiler water level gauge glass have on the visible water level in the glass?
The level in the glass would be higher than the actual level in the boiler
There would be no or very little water shown in the glass because it would be air locked.
The level in the glass would be less than the level in the boiler due to the water in the glass evaporating into the empty steam space.
The level in the glass would be the same as the level in the boiler since the water connection is still clear.
What is the possible concern if fuel tanks on a Bulk Carrier, which are close to cargo spaces containing grain, are excessively heated?
The grain cargo may produce methane gas
No damage should occur
The grain cargo may be heated and damaged
The cargo may liquefy
A high speed diesel engine has been subject to a major overspeed incident due to governor failure. During checks for damage it is found that some of the bottom end bolts have slackened off slightly. There appears to be no other damage to any of the bearings, the running gear or to the crankshaft. From the options given select the action to be taken before bringing the engine back into service.
Renew all of the bottom end bolts.
Retighten the bottom end bolts that were slack back to the recommended torque.
Renew all of the running gear for the engine including the crankshaft and bearings.
Renew all of the bottom end bolts that were found slack.
Due to the safety of the ship its crew and passengers it is only permitted to ……… in designated areas onboard
ead magazines and newspapers
Use mobile telephones
Drink
Smoke
After discharge of a bulk cargo by grabs and bulldozers (bob cats), which part of the hold must be checked very carefully for damage?
Hold lighting
Access ladders
Corrugated bulkheads
Beam knees and upper hoppers
What does this flag mean?
My vessel is stopped and making no way through the water.
Yes (affirmative).
I wish to communicate with you.
I have a diver down; keep well clear at slow speed.
Which of the following has the highest fat content?
Sardines
Rainbow trout
Hake
Plaice
It is necessary, prior to loading a refrigerated cargo on a conventional reefer vessel, to prove that the hold bilges are clear and that the bilge system is functioning correctly. Which of the cargo types given in the options would be expected to produce the most water during a voyage?
A cargo of fruit loaded at field temperature.
A cargo of fruit loaded pre-cooled.
A cargo of hard frozen perishable goods.
A cargo of chilled meat.
What kind of fixed extinguishing plant is installed to use on an oil tanker’s engine room and pump room?
Water spray plant.
CO2 plant.
Foam plant.
Powder plant.
What special design feature is attributed to pure car carriers?
A small GM when fully loaded
Bow doors
A stern ramp
A very large windage area
For which of the workshop machinery listed below, can it be considered as safe not to wear protective goggles when operating?
None of the alternatives.
Grinding machine.
Drilling machine.
Lathe.
The water cooling space on the turbocharger is damaged and you have no spares. The cooling water must be closed. Which steps would you take to ensure least possible damage?
Run the engine at a lower speed.
Make no modifications, but tell the duty engineer to pay special attention for abnormalities.
Cool the turbocharger by means of air.
Dismantle the rotor and assemble the sealing plate.
When opening a Plate Cooler for cleaning, how should the bolts be removed?
Fully slacken and remove top ones first, then middle, then bottom.
Fully slacken and remove middle bolts first, then top, then bottom.
Casually slacken all bolts.
One by one.
What does atomizing mean when we talk about injectors?
That no solid beam of fuel shall be present
The fuel injector is leaking
Very high fuel oil pressure out of nozzle
The injector is extremely hard to open
Generally vertical mounted pumps are used in ship engine rooms. Is it because of:
They require less bearings than horizontal pumps.
Floor space is usually more valuable than height.
They give better performance than horizontal pumps.
It makes maintenance easier.
Which of the following factors affect the separation process
Density, viscosity, flow rate, temperature, gravity disc diameter
Maintenance interval, temperature, feed rate, particle distribution
Discharge interval, temperature, feed rate, viscosity
Gravity, particle size, viscosity, density difference
Water is best removed from lubricating oil by:
Paper filter.
Pressure filter.
Centrifugal separator.
Silica gel cartridges.
This online test consists of 90 random questions from CES 5.1 tests on a topic of your choice.