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1.
The suction control switch on the compressor is a ..........................
Doğru Cevap: "C" Pressure element
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2.
Considering the fuel, ignition quality is determined by .......................
Doğru Cevap: "E" All except 4
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3.
........................ should be followed as a procedure, if it is necessary to pump bilges while a vessel is in port.
Doğru Cevap: "A" Pumping only if discharge is led to a shore tank or barge
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4.
Fire detecting and extinguishing equipment is required on all ................
Doğru Cevap: "C" Vessels over 150 feet in length
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5.
On a diesel engine, a freshwater heat exchanger is used rather than a saltwater to:
Doğru Cevap: "C" Cut down on rust and corrosion
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6.
An overheated bearing in the main propulsion unit is indicated by:
Doğru Cevap: "E" High temperature of the lube oil leaving the bearing
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7.
The liner which has no direct contact with the cooling water is what kind of a liner
Doğru Cevap: "B" Dry
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8.
.......................... should be considered as a hazard on the propeller and a thorough examination and repair will be carried out when the vessel is in dry dock.
Doğru Cevap: "E" All above
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9.
The main characteristics of a diesel engine is:
Doğru Cevap: "C" either 2 or 4 stroke, fuel is burned inside the cylinders
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10.
How often should the emergency diesel be run under load?
Doğru Cevap: "B" Once a month
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11.
Flashlights used aboard tankers must be ................
Doğru Cevap: "B" Of the three cell type
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12.
A spring bearing on the line shaft is lubricated by:
Doğru Cevap: "B" Water leak off from the stern tube
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13.
What will happen to a small diesel engine that is equipped with an "auto type" thermostat if the bellows develop a hole in it?
Doğru Cevap: "A" The engine will overheat
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14.
Emergency generators are placed .......................
Doğru Cevap: "B" Above the bulkhead or freeboard deck whichever the higher
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15.
........................... is a process, in which the temperature of a space on whatever takes place in, is reduced below that of their surroundings.
Doğru Cevap: "A" Refrigeration
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16.
Preignition can be caused by .................... in an operating diesel engine.
Doğru Cevap: "B" Oil in the air charge
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17.
.......................... are the common parts within the 2 and 4 stroke diesel engines
Doğru Cevap: "E" Cylinder, connecting rod, pistons
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18.
If the flow of water from a centrifugal pump is stopped by closing the discharge valve with the pump running:
Doğru Cevap: "B" The water pressure will stabilize at shut off head
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19.
One horsepower equals ....................
Doğru Cevap: "B" 746 watts
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20.
Which one is not identical with the characteristics of the construction of a2stroke
diesel engines?
Doğru Cevap: "E" A cycle is completed in 2 revolution of the crackcase
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21.
This gauge measures both inlet and outlet pressures of a strainer:
Doğru Cevap: "B" A duplex gauge
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22.
All refrigerator compressor valves are opened and closed via ............................
Doğru Cevap: "D" 1 or 3
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23.
When distilling salt water the coolingwater discharge from the distiller is fed back to the evaporator as feedwater:
Doğru Cevap: "C" To supply hot water to the evaporator for more economical operation
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24.
The purpose of an evaporator is to .......................
Doğru Cevap: "C" Absorb the latent heat of evaporation
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25.
Which factor below is not the cause of vibration and noise in turbines?
Doğru Cevap: "E" Any above
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26.
Which of the following actions should you take to correct a low condensing pressure in a refrigeration system?
Doğru Cevap: "E" Add refrigerant
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27.
A ball bearing will overheated if:
Doğru Cevap: "A" Completely full of grease
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28.
In a 4 stroke engine 2 revolution of the crank is completed within the angle of ....................
Doğru Cevap: "A" 720°
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29.
Which of the following is not one of the parts of D/G overhaul?
Doğru Cevap: "B" Valve sprindle
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30.
The second effect on a two pass evaporator receives its steam from:
Doğru Cevap: "B" Vapors from first effect
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31.
What is not included in the category of deck machinery?
Doğru Cevap: "D" Steam generator
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32.
Every mechanical governor has ......................... as its basic element.
Doğru Cevap: "C" Weights acted on by centrifugal force
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33.
Supposing a fire caused by short electric circuit within the equipments is categorized as a ...................... fire and will be extinguished via ..................
Doğru Cevap: "B" Class C / chemical powder
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34.
Any automatic sprinkler, fire detection and fire alarm system shall be capable of immediate operation at all times and no action by the crew shall be necessary to set it in operation. Each section of sprinklers shall include means for giving a visual and audible alarm automatically whenever any sprinkler comes into operation. Sprinklers shall be grouped into separate sections, each of which shall contain not more than 200 sprinklers. Each section shall be capable of being isolated my one stop valve only.
A gauge indicating the pressure in the system shall be provided at each section stop valve and a central station. The sprinklers shall be resistant to corrosion by marine atmosphere. In accommodation and service spaces the sprinklers shall come into operation within the temperature range from 68°C to 79°C. A list or plan shall be displayed at each unit and suitable instructions for testing and maintenance shall be available. Sprinklers shall be placed in an overhead position to maintain an
average application rate of not less than 51/m2/mm over the area covered by the sprinklers. According to the passage, it isn't true that;
Doğru Cevap: "D" Sprinkler system is used either fixed or mobile on board
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35.
With a reciprocating pump, failure to deliver liquid may be caused by ..................
Doğru Cevap: "C" Liquid plunger packing worn
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36.
Which of the following isn't a component of a water tube boiler?
Doğru Cevap: "E" booster pump
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37.
The coils in the evaporator are attached to the header by:
Doğru Cevap: "B" Union type fittings
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38.
What term is used to describe the loss of combustion pressure due to worn rings and liner?
Doğru Cevap: "E" Blow by
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39.
Which of the below can be generatede on board?
I       fuel oil
II     steam
III    electrical energy
IV    distiilled water
Doğru Cevap: "C" II- III- IV
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40.
If a centrifugal pump is noisy with excessive vibration during its operation, the cause would most likely be due to ........................
Doğru Cevap: "A" Bent shaft
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41.
The power produced in the cylinder is called ..........................
Doğru Cevap: "D" Indicated horse power(IHP
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42.
A floating ship displaces water equal to its weight.which word can be used from the underlined word?
Doğru Cevap: "B" Afloat
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43.
Which below can be named as device for controlling speeds of turbines?
Doğru Cevap: "D" All above
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44.
"The quantity of oil in separated water is controlled by a control unit" What sentence below has the same meaning?
Doğru Cevap: "C" The oil quantity in water is separated by control unit
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45.
.................. is used as a fire extinguisher in case of fires resulted from electrical equipment.
Doğru Cevap: "B" CO²
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46.
When vacuum is lost on a turbo generator the trip is actuated by .............
Doğru Cevap: "C" Slugs of water
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47.
The removal of contaminating impurities from lubricating oil will_____________
Doğru Cevap: "E" B and D
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48.
A propulsion diesel engine is normally shut down by_____________
Doğru Cevap: "C" Securing the fuel supply
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49.
Studs and nuts intended for use in main steam line flanges and fittings are marked with an "H" or a "T" to show they are:
Doğru Cevap: "A" Heat resistant
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50.
Read the following paragraph very carefully and then answer the question: "When stopping a running diesel engine, there are certain steps to be taken, which are common and applicable to all diesel engines. Among these; to run the engine at a certain R.P.M. without load far some time for cooling down purposes, setting the governor to a certain R.P.M. and then turn the start/stop button to stop, to turn off valves for fuel oil, starting air, sea cooling water and fresh cooling water, if the engine is to be shut down for a prolonged period, can be mentioned." One of the following procedures IS NOT a step to be taken, when stopping a running diesel engine. Choose and mark that step:
Doğru Cevap: "E" Check that fuel oil, lubricating oil, cooling water and seawater valves are open and they are circulating
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TEST BİTTİ.
CEVAPLARINIZI KONTROL EDİNİZ.

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