%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}
Suche nach aktuellen Stellenangeboten:
Filter anzeigen
Suche in der Datenbank der Lebensläufe von Seeleuten:
Online-Test: Test online CES 5.1 for Ch-Eng / 2nd-Eng
Wählen Sie den Testmodus:
Ausbildung
Online-Test
Beschreibung
Der Test besteht aus zufälligen Fragen zu einem ausgewählten Thema.
Frage 1 aus 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
Which one of the listed requirements regarding the construction of lifeboats do not correspond to present regulations? The lifeboat shall:
have hull of fire-retardant or non-combustible materials
be capable of being launched and towed when the ship is making headway of 5 knots in calm weather
have permanent boarding arrangements on both sides to enable persons in the water to board the lifeboat
have sufficient strength to be safely lowered into the water with full compliment
Buoyant smoke signals shall be so designed as to burn or emit smoke:
continuously after having been immersed for a period of 1 minute under 1m of water
only when not in the water
continuously after having been immersed for a period of 10 seconds under 100mm of water
when underwater
Give the meaning of the following symbol
Line throwing appliance
Rocket parachute flares
Lifeboat hand flare
Survival craft distress pyrotechnic signals
Which of the following names is given to the basic types of foam as far as they are differentiated according to the way bubbles are obtained:
AFFF foams
Polar foams
All answers are good
Chemical, physical or mechanical foams
*In a ship that is not fitted with a main fire control room, where is the control panel of a fixed fire detection system located?
Antwort
*Which of the following requirements applies to the inert gas system of a tanker?
Inert gas must be delivered at a rate of at least 125% of the maximum rate of discharge capacity of the ship expressed as a volume
All these requirements apply
The oxygen content of the inert gas must not exceed 5%
The oxygen content of the atmosphere of any part of any cargo tank must not exceed 8%
*Which bulkhead is the most efficient to fight against spread of fire?
Class D bulkhead
Class A bulkhead
Class B bulkhead
Class C bulkhead
Fixed pressure water-spraying fire-extinguishing systems are widely employed in all kinds of vessels, mainly passenger ships and ro-ro ships, with a high degree of success. The aim of these systems is to put out a fire but they may also be very useful even if they only ensure
the control of temperatures of surrounding areas
the structural protection of the vessel
all the answers are good
the confinement of a fire
A standard self-contained breathing apparatus is capable of functioning for at least
90 minutes
30 minutes
60 minutes
45 minutes
You are carrying out a search in a smoke filled compartment wearing BA. At what stage should you start to make your way out of the compartment?
15 minutes after starting to use the set as this leaves you with five minutes air left.
Wait for the appropriate signal on your safety line as the personnel outside will be keeping a track of the time you have spent inside.
Regularly check your pressure gauge and note how much air you used to reach your work area. Start to return when you have this amount left plus a reasonable reserve.
Wait until the BA set warning whistle sounds.
"A" Class divisions in ships are constructed so that they are capable of preventing the passage of smoke and flame to the end of a standard fire test held for how many minutes?
60 minutes
30 minutes.
45 minutes.
15 minutes
How often must a crew member participate in a fire drill?
Once every 6 months
Once every two weeks
Once every month
Once every year
Regular ‘updating’ of a vessel’s position in an Inmarsat-C installation is among others things important:
To guarantee reception of NAVTEX-reports in areas where normal NAVTEX-facilities are not available
To guarantee reception of NAVTEX-reports
To guarantee assistance in emergency
To restrict NAVARAE-reports
Name three international conventions that cover the international shipping trades?
The three international conventions that cover the shipping trade is SOLAS 74/78, STCW 78/95 and MARPOL 73/78
The three international conventions that cover the shipping trade is SOLAS 74, STCW 78 and MARPOL 73
The three international conventions that cover the shipping trade is SOLAS 74, SOLAS 78 and STCW 78
There isn’t any international conventions that cover the shipping trade
You are part of a team of two First Aiders in a resuscitation situation. What is the rhythm of resuscitation with two First Aiders?
5 compressions after every 1 inflation
7 inflations before every 5 compressions
10 compressions within every 3 inflations.
3 compressions after every 1 inflation
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
Once a ship (equipped with self-stowing auto-tension winches) is moored alongside a loading or discharging berth, it is recommended that:
All winches to be left with the manual brake on and out of gear.
All mooring winches be left in 'auto-tension' mode
The 'spring' winches be left in the auto-tension mode and all other winches with the manual brake on
The 'breastline' and 'headline' winches be left in the auto-tension mode and spring winches with manual brake on
You are on a power-driven vessel underway in open water. This vessel is sighted on the port bow on a steady bearing. What kind of vessel is it and what will your action be?
This is a sailing vessel not making way through the water. There is no risk of collision and I will maintain my course and speed.
This is a vessel engaged in fishing. It is my responsibility to keep clear under rule 18 and I will alter course to starboard, sounding one short blast.
This is a sailing vessel underway. I am the stand-on vessel and will maintain my course and speed under rule 17.
This is a sailing vessel underway, seen head-on. It is my responsibility to keep clear under rule 18 and I will take appropriate avoiding action.
What transmitting equipment as a rule is not allowed for us in territorial waters:
Inmarsat-C transmitters
Inmarsat-A transmitters
Don't know
MF-transmitters
Give the meaning of this symbol:
lifebuoy with light and smoke
lifebuoy with light
lifebuoy with automatic parachute flare
lifebuoy with line
Give the meaning of the following symbol:
muster station for lifeboat
lifeboat
muster station for rescue boat
rescue boat
The minimum number of lifebuoys required for a passenger ship cannot be less than:
6
8
2
10
Which item among those below is included in the normal equipment of every lifeboat ?
sea-charts and navigating equipment
one life-jacket for each person
an EPIRB
a buoyant bailer and two buckets
What is the meaning of this symbol ?
Survival craft portable radio
Radar transponder
Survival craft pyrotechnic distress signals
EPIRB
*Which one of the following items has to be included in an abandon ship drill?
Starting and operating radio life-saving appliances
Launching and recovery of a survival craft
ensuring that passengers and crew are made aware of the order to abandon ship
Manoeuvring the lifeboat in the water
What special safety measures are required by a seaman when working aloft on a stage?
Safety harness with a rope secured to a safe point above.
No special safety measures required.
A safety harness secured to the stage.
Helmet, safety shoes and gloves.
A triac is used to provide temperature control of an oven. The galley complain that the oven only reaches approximately 50% of demanded temperature. Which of the following is a likely cause?
The voltage supply to the oven controller is reduced by about 50%
Connection between the demand knob and the triac gate terminal has gone open circuit.
One of the main switching elements in the triac has failed.
The triac has completely failed.
If an inhibitor is added to an oil cargo, which of the following is a summary list of items to be included on its accompanying certificate?
Inhibitor name; amount added; date added; period of efficiency; precautions if voyage length exceeds that period; eventual temperature limitation.
Inhibitor class; amount added; date of expiry; minimum period of optimum efficiency; precautions to be taken when added; minimum temperature requirement.
Inhibitor class; percentage blended; date added; maximum period of efficiency and applicable temperature limits; maximum storage period on board; contact number of manufacturer.
Inhibitor name; percentage applied; date of expiry; precautions to be taken on voyage and interval of application; maximum temperature at which continuously effective.
If a vessel is rolling heavily in a seaway and has negative GM and a small Angle of Loll, describe how the vessel will roll.
Roll unevenly flopping over between the Angle of Loll on each side.
Roll evenly either side of the upright position.
Roll evenly each side of the Angle of Loll.
Roll between the Angle of Loll on each side.
When a container is damaged en route, who should be asked to attend on board at the next port?
A surveyor representing the vessel’s P. & I. Club
A surveyor representing the vessel’s hull & machinery underwriters
The classification society surveyor
A surveyor representing the consignee
What does this signal hoist mean?
I require immediate assistance.
Do you require assistance?
Stand by to assist me.
I require medical assistance.
What name is given to an appetizer, served before a meal, usually being small, attractive, savoury snacks, designed to stimulate the appetite?
Hors d'oeuvre.
Order.
Hors de manger.
Hors de combat.
The responsible person for maintaining budget on board normally is:
Chief Engineer
Chief Officer
Master
Chief Steward
A diode is in good condition when the following test results are obtained using a Digital Multi-Meter.
With + to A a reading of about 0.6V, and with probes reversed a reading of O/L.
With + to K a reading of about 0.6V and with probes reversed a reading of O/L.
With + to A good continuity ( low ohms) and with the probes reversed a reading of infinity.
With + to K good contiuity ( low ohms) and with the probes reversed a reading of infinty.
Which of the following spices comes from dried tree bark?
Tumeric
Cardamom
Cinnamon
Cumin
On the figure 4 possible definitions of the term "QUAY" are given. Which one is the correct one?
Quay is given by C on the figure
Quay is given by A on the figure
Quay is given by D on the figure
Quay is given by B on the figure
What are cargo residues considered as under MARPOL 73/78?
Marine Pollutants
Oily mixtures
Garbage
Wastes
When discussing oil tanker design, what do the letters "VLCC" stand for?
Variable Level Cargo Container
Very Large Crude Carrier
Virtual Loss (of) Cargo Capacity
Very Large Combination Carrier
The figure shows a silicon controlled rectifier with a RC circuit connected in parallel. RC circuit is often used in such connection. For which purpose?
Protect the SCR against damage caused by high voltage spikes
Obtain current resonance
Measuring the current through the SCR
Delay the ignition of the SCR
When ballasting operations are about to start on a bulk carrier, what important checks must be made?
That all air pipes are open and that the pipeline and valve system is correctly set up
That the vessel is even keel and upright
That the cargo operations are completed
That the hold bilge system has been cleaned and the access ladders checked
Which of the following could be the possible cause of too high cargo condenser pressure?
Incondensible vapour in the cargo and shortage of refrigeration.
Incondensible vapour in the cargo.
Broken discharge valve plate.
Shortage of refrigeration.
Where and for what are rubber mats used on board a pure car carrier?
Under the loading ramp flap to prevent jetty damage
On the loading ramp to prevent damaging the ramp surface
Under the loading ramp flap to prevent vehicle damage
While alongside at a repair berth a new section of seawater pipe has been fabricated in a shoreside workshop from drawings supplied by the vessel. During fitting of the pipe by ship's engineers it is noted that the pipe is too short leaving a gap of about 8mm between the flange faces. What action should be taken to remedy this problem?
The pipe should be returned to the shoreside workshop for modification or to be remade to the correct dimensions.
The ships engineer's should use extra long bolts and pull the flanges together
The ship's engineers should fit extra thick joints between the flanges to fill the gap.
The ship's engineers should manufacture a spacer piece to fit the gap.
On a RoRo vessel, why should there be no more than two lashings secured to any one point on a ro-ro unit?
Because the vehicle securing point is likely to break in heavy weather
Because the vehicle itself is likely to tip over during heavy weather
Because the securing forces will not be evenly distributed
What hazard is associated with carrying ammonium nitrate?
It has several subsidiary risks
It is a marine pollutant
It is liable to spontaneous combustion
It can explode
A spare cylinder head for the generator needs to be lifted from its storage cradle to the generator flat. Because of its location the engine room crane cannot be positioned directly above it. What method should be used to bring the cylinder head into position?
Attach the crane hook to the lifting gear for the cylinder head and drag it across the deck until it is directly under the crane.
Use crow bars to lever the cylinder cover across the deck until it is in position below the crane.
Use a block and tackle to drag the head across to a position beneath the crane.
Rig chain blocks to lift the cylinder head from its cradle and then transfer it gradually over to the crane hook by working the chain blocks.
Following maintenance work on an air compressor the engine room rating is asked to put the tools away. It is noticed that an allen key is missing from the set. What action should be taken?
Get another one from the store to make up a full set again.
Assume it has fallen in the bilge and look for it when the bilges have been pumped.
Make a note in the log book so the other engine room staff know it is missing.
Inform the engineer in case it has been left inside the compressor when it was closed up.
The threads on the drain plug for the bronze end cover of a sea water cooled heat exchanger have been badly damaged during maintenance. There is no spare brass plug available. What is the best solution for repairing the heat exchanger?
Use a steel plug with the same thread as the original to replace it.
Wrap the threads in thread tape and coat it with jointing compound before refitting it.
Hammer in a wooden tapered plug as a temporary repair.
Make a new brass plug on the lathe to fit the drain hole.
After water-washing the turbocharger exhaust side it starts to vibrate even though it was operating normally prior to the washing procedure. What is the most likely cause of this problem?
The foundation bolts for the turbocharger are loose.
The rotor blades are damaged or the blades are not properly cleaned
Water drain for washing system is blocked allowing water to build up in the turbine casing.
The turbocharger bearings are worn out.
Give the meaning of this symbol:
lifebuoy with light and line throwing appliance
lifebuoy with light and smoke
lifebuoy with light and hand flare
lifebuoy with automatic sound signal
The range of a transducer is 0-200 bar. The standard output signal is 4-20 mA. What is the output signal when the process value is 100 bar.
24 mA
4 mA
10 mA
12 mA
Some liquefied gas carriers require a secondary barrier as part of the cargo containment system. What is the main purpose of a secondary barrier on these gas carriers?
To provide temporary containment of any leakage of cargo through the primary barrier.
To reduce heat leakage into the cargo.
To hold the thermal insulation for the primary barrier in place.
To connect the cargo containment system to the ship's hull.
What determines the size of the "sump" in a chemical tanker's cargo tank?
It must be below 1/3000th of the total volume of the tank.
The foot of the pump must fit inside it with a minimum of 20 cm clearance all round from the pump casing.
When combined with the estimated residues on the bulkheads and in the associated pipelines, the quantity of residues remaining in the sump must be below the maximum quantity remaining after discharge as permitted by law.
The flow of residues into the sump must be greater than or equal to the pumping capacity of the pump when operated at stripping speed (calculated as 12% of nominal speed against 3 bar head pressure), with not more than 1.5 degrees adverse list or 0.1 degree trim.
Which of these actions should you take it your ship is successfully boarded by armed pirates?
Fight back.
Scream in fear and refuse to cooperate.
Keep quiet and ignore any questions you’re asked.
Assure your captors that you’re not planning an attack to overthrow them.
On the figure 4 possible definitions of the term "AFT SPRING" are shown. Which one is the correct one?
Aft spring is defined as A on the figure
Aft spring is defined as B on the figure
Aft spring is defined as C on the figure
Aft spring is defined as D on the figure
What would the Chief Officer require prior to the vessel's departure from the berth?
Prior to the vessel's departure from the berth, the Chief Officer would require the anchor to be thoroughly secured
Prior to the vessel's departure from the berth, the Chief Officer would require the crew to prepare for the voyage
Prior to the vessel's departure from the berth, the Chief Officer would require the Bo's'un to oil the moving parts of the windlass
Prior to the vessel's departure from the berth, the Chief Officer would require the windlass to be covered
Which of these statements is correct with regard to the characteristics of cashew nut shell liquid?
It can be stored for prolonged periods without becoming rancid
Its carriage does not present any undue hazards or risks
It is corrosive
It is sweet and odourless
Which of the given statements is true in relation to the features and operation of a 4 stroke diesel engine ?
4 stroke engines are not required to have crankcase relief valves fitted.
The camshaft rotates with half the RPM of the crankshaft in a 4 stroke engine.
A 4 stroke engine always has scavenge ports near the bottom of the cylinder liner.
A 4 stroke engine has an ignition towards the end of every upward stroke of the piston.
A walk-in refrigerator has been out of use for several weeks and needs cleaning. It has been closed for a long time because there is a suspicion that there may be a small gas leak from the cooling system. What should you do?
Hold your breath as you enter, locate the gas leak and stick a bit of tape over it.
Seek advice from ther ship's safety officer who will perform a risk assessment and advise on any precautions necessary.
Nothing special - it's only a refrigerator and everything will be OK.
Get someone to come inside the refrigerator with you.
What is the normal procedure for cooldown cargo tanks prior to loading LNG?
Pumping cold LNG through the spray header.
Pumping cold LNG to the bottom of the tank.
Pumping cold LNG through the heater.
Pumping cold LNG through liquid header.
What is the meaning of “remote mode” related to a slave controller?
The slave controller can be tuned by a hand carried remote controller
The slave controller can be in any mode of operation
The slave controller can be tuned from the engine control room
The slave controller receives the set-point from the output signal of the master controller
What will increase friction between the deck surface and cargo units?
Placing cargo units as closely as possible to each other
Placing soft boards or other anti-skid material under the cargo
Removing all traces of grease and oil from the decks
Tightening cargo lashings to the fullest extent possible
You are having a blow-by on the main engine, but due to the circumstances, it is impossible to stop and do a piston overhaul. What is the correct action to take?
No action necessary.
Reduce speed temporarily and increase cylinder oil consumption.
Reduce speed.
Increase cylinder oil consumption.
A power card from a slow speed diesel engine cylinder is abnormal with a low height and the body of the diagram thicker than normal. What is the most likely cause of this?
Fuel timing is advanced.
Partially blocked fuel injection valve.
Scavenge pressure is too high.
Fuel timing is retarded.
What is the difference between a "VLCC" and a "ULCC"?
Tankers between 125,000 tonnes and 250,000 tonnes deadweight are classified as "VLCC"s while those above 250,000 tonnes are classified as "ULCC"s.
Tankers between 200,000 and 300,000 tonnes deadweight are classified as "VLCC"s while those above 300,000 tonnes are classified as "ULCC"s.
Tankers with a loaded draught of between 17.8 and 23.1 metres are classified as "ULCC"s, while those with a draught in excess of 23 metres are classified as "ULCC"s.
Large tankers that are able to pass through the Suez Canal are classified as "VLCC"s. Those which are too deep to transit the Canal are classified as "ULCC"s.
How can you avoid and/or reduce potential panic among passengers, if an emergency situation occurs?
Checking that all crew and passenger are present
Inform passengers at frequent intervals over the public announcement system about the situation and how they shall act. Use as many of the ships officers and crew among the passengers to assist.
Do not inform passengers about the situation. It will only create panic and make it difficult for the crew to handle the situation.
Inform the passengers, that there is nothing to worry about, to keep them calm.
The timing of the engine is delayed. The exhaust temperatures are high. How would you expect this to affect the turbocharger?
Higher air and gas temperature after turbocharger.
Surging of the turbocharger.
Decreased turbocharger revolutions.
Increased turbocharger revolutions.
What is the correct understanding of the term "Isobar"?
An "Isobar" is the line showing the direction of the predicted path of a hurricane.
An "Isobar" is a line joining places of equal pressure.
An "Isobar" is a line joining places of equal temperature
An "Isobar" is the line of the cold front in a frontal depression
On fully pressurised liquefied gas carriers the cargoes are usually carried at atmospheric temperatures. Is frostbite still a hazard on such vessels if there is leakage from the cargo pipe system?
Yes, but only if cargo vapour contacts the skin.
No frostbite is only a hazard when cargoes are refrigerated.
No, the cargo will vapourise and disperse quickly.
Yes, the liquid will flash off to its' fully refrigerated tempearature.
What is the purpose of the discharge booster pump?
To increase the manifold pressure.
To increase the NPSH.
To maintain the cargo temperature.
To compensate for friction losses in the discharge line.
Is it permitted to load fully refrigerated propane directly onto a fully pressurised LPG carrier without additional conditioning of the cargo or cargo spaces?
Only if the loading rate is kept below 100m3/h.
Only if the cargo containment system is designed for temperatures of minus 48 degrees C or less.
Fully refrigerated propane can be loaded directly onto this type of vessel under any circumstances
Only if the vessel is equipped with cargo cooling plant
When carrying fishmeal without anti-oxidant which of the following stowage patterns is recommended under the IMDG Code?
The block stow with extensive internal channelling
The double strip stow with extensive athwartships channelling
The block stow with no internal channelling
The compact stow with limited channelling
What is the name of this unit?
A hydrostatic release unit
A liferaft release unit
An antistatic release unit
A slip hook
What is most important for visual search purposes?
Use of standard search pattern
Design of special search pattern
Start a search immediately
Design of individual search pattern
Hindus are not permitted by their religious beliefs to eat one particular type of meat. Which one?
Lamb
Pork
Chicken
Beef
Why did the new Cadet want to go to the messroom?
The new Cadet wanted to go to the messroom to sign the Articles of Agreement
The new Cadet wanted to go to the messroom to get some rest
The new Cadet wanted to go to the messroom to become acquainted with the officers
The new Cadet wanted to go to the messroom to check that his papers were in order
On the figure 4 possible definitions of the term "CENTRE LINE" are given. Which one is the correct one?
Centre line is given by B on the figure
Centre line is given by C on the figure
Centre line is given by A on the figure
Centre line is given by D on the figure
Why may wearing sweat rags slung round your neck when working in the machinery spaces be hazardous?
The rags may cause sweat rash.
The rags may cause you to get too hot and faint.
The rags may be caught by running machinery or power tools.
The rags may be soaked with oil and catch fire.
Achieving a good air flow through the various cargo compartment of a reefer vessel is a principal design aim of a Naval Architect. Which of the options given represents the optimum cargo space shape?
A flared space that would be found in a forward upper deck.
A narrow tapered space as would be found in a forward lower deck.
A long oblong space as would be found in an after upper deck.
A square space as would be found in a midships lower deck.
How does a cement carrier discharge its cargo?
Using its own pumping system and equipment
By suction
Using shore side cargo gear
Using grabs
The space between the cargo tank liquid dome and dome cover for an LNG carrier is maintained inerted, usually using nitrogen. What is the maximum allowable O2 content of the nitrogen used for this purpose?
1% O2.
3% O2.
4% O2.
5% O2.
Passenger ships shall either carry automatically self-righting liferafts or canopied reversible liferafts. What does it mean that a liferaft is automatically self-righting?
The liferaft will automatically turn back into an upright position when it is empty of people
One person can manage to turn the liferaft back into an upright position
The liferaft will automatically turn back into an upright position when it is fully loaded with people
It means the same as self-righting lifeboats
When patrolling the car deck during a voyage you should observe the following elements:
Check that fire hoses are connected to the fire hydrants
Any abnormalities such as leakages, fumes, smoke or fire. Check if the lashings need to be tightened on lashed cargo.
heck if all the lights are switched off and the doors are closed
Smoke or fire
*A davit-launched liferaft on board a ship is so arranged to be boarded by its full complement of persons in less than:
2 min
1min
4 min
3 min
You are going to start firing a boiler. Which of the below mentioned alternatives do you consider as most important?
Bottom-blowing the boiler to be absolutely convinced that water is present in the boiler.
A thorough ventilation of the combustion chamber before the ignition takes place.
Opening the main steam pressure outlet valve.
Activating the main safety valves.
An important quantity which is useful in circuit analysis is known as conductance G (Siemens). Which of the formulas A to D expresses the conductance for this circuit?
G = 2 R
G = R * I
G = I /R
G = 1/R
Transmission lines play a central role in radio frequency circuits, where they are used to pipe signals around from one place to another within a circuit, and often to an antenna system. General rules for such transmission line is that they must be "matched". Which of the cables below would you use to obtain a matched transmission between Z1 and Z2?
Figure 4
Figure 2
Figure 3
Figure 1
Why do many engine makers recommend to grind the valve spindle sealing surface with a half degree difference to the valve seat?
To avoid sticking between valve and seat during high load operation
To improve the sealing surface between valve and seat during operation of the engine (compensate for the bending of the valve disc caused by combustion pressure)
To minimize heat transfer between seat and housing.
To compensate for the heat expansion
From the pressure gauges shown can you tell what is the oil pressure in a freon compressor?
8,5 bar
2.0 bar
5.5 bar
6.5 bar
What refrigerant temperature would you expect to find at the compressor discharge of an air conditioning system?
+ 5 ° C
+140 ° C
+ 20 ° C
+ 85 ° C
Dieser Online-Test besteht aus 90 zufälligen Fragen aus CES 5.1-Tests zu einem Thema Ihrer Wahl.