Trawlers, whaling ships and purse seiners are in the category of ............................

A. pleasure crafts

B. fishing vessels

C. passenger ships

D. naval ships

E. excursion boats

Doğru Cevap: "B" fishing vessels

Cevabı Göster

Doğru Cevap: "B" fishing vessels
Soru Açıklaması

The cylinder cover is tightened against liner with studs. What word can be used instead of the underlined word?

A. removed

B. replaced

C. screwed

D. slackened

E. supported

Doğru Cevap: "C" screwed

Cevabı Göster

Doğru Cevap: "C" screwed
Soru Açıklaması

Any electric motor can be constructed to be .................... prof.

A. Short

B. Ground

C. Explosion

D. Overload

E. 1 ve 2

Doğru Cevap: "C" Explosion

Cevabı Göster

Doğru Cevap: "C" Explosion
Soru Açıklaması

While making your rounds, you notice the main lube oil temperature is higher than normal. To remedy this situation, you should:

A. Speed up the main lube oil pump

B. Open the lube oil cooler seawater inlet valve wider

C. Throttle in on the lube oil cooler seawater discharge valve

D. Close the lube oil cooler seawater discharge valve wider

E. Open the lube oil cooler seawater discharge valve wider

Doğru Cevap: "E" Open the lube oil cooler seawater discharge valve wider

Cevabı Göster

Doğru Cevap: "E" Open the lube oil cooler seawater discharge valve wider
Soru Açıklaması

What word is not related to cargo handling equipment?

A. filler

B. derrick

C. hoisting

D. jib

E. crane

Doğru Cevap: "A" filler

Cevabı Göster

Doğru Cevap: "A" filler
Soru Açıklaması

The sequence of events in a cycle within 4 stroke diesel engine is:

1 Thepiston is forced down at BDC (Bottom Dead Center) exhaust valve opens

2 The piston is at the top of its stroke, TDC (Top Dead Center), inlet valve opens, fresh air is drawn

3 Pressure is high in the gases

4 Fuel is injected as the piston reaches TDC, to start the combustion

5 Inlet valve opens, fresh air drawn as the piston moves down

6 At the bottom of the stroke BDC inlet valve closes and the air in cylinder is compressed as the piston rises

A. 256431

B. 256413

C. 265431

D. 524631

E. 526413

Doğru Cevap: "A" 256431

Cevabı Göster

Doğru Cevap: "A" 256431
Soru Açıklaması

To remove the impurities and water droplets from oil, .......................... are used on board a ship.

A. purifiers

B. clarifiers

C. centrifuges

D. separators

E. all

Doğru Cevap: "E" all

Cevabı Göster

Doğru Cevap: "E" all
Soru Açıklaması

Oily water separators are used to separate oil from bilge water .................. the bilge water is pumped ................

A. after / overboard

B. before / overboard

C. before / inboard

D. after / out

E. when / aboard

Doğru Cevap: "B" before / overboard

Cevabı Göster

Doğru Cevap: "B" before / overboard
Soru Açıklaması

Having an unstarting compressor must make you think the possibiliy of ..........................

A. No charge of liquid in the system

B. Closed solenoid valves

C. 1 and 2

D. None above

E. Having sufficient amount of air

Doğru Cevap: "C" 1 and 2

Cevabı Göster

Doğru Cevap: "C" 1 and 2
Soru Açıklaması

10.

The motion of the piston in the cylinder is;

A. rotary

B. axial

C. bending

D. fluctuating

E. reciprocating

Doğru Cevap: "E" reciprocating

Cevabı Göster

Doğru Cevap: "E" reciprocating
Soru Açıklaması

11.

On most diesel engines, the governor controls the speed by:

A. Contolling the amount of fuel injected into the cylinders

B. Varying the speed of the turbocharger

C. Adjusting the compression ratio

D. Changing the timing of the fuel injection camshaft

E. Changing the timing of the exhaust valves

Doğru Cevap: "A" Contolling the amount of fuel injected into the cylinders

Cevabı Göster

Doğru Cevap: "A" Contolling the amount of fuel injected into the cylinders
Soru Açıklaması

12.

What will happen to a small diesel engine that is equipped with an "auto type" thermostat if the bellows develop a hole in it?

A. The engine will overheat

B. The engine will remain cold

C. The engine will remain not start

D. The cooling water will "by pass" the engine

E. None of the above

Doğru Cevap: "A" The engine will overheat

Cevabı Göster

Doğru Cevap: "A" The engine will overheat
Soru Açıklaması

13.

Which of the followings is not one of the qualities of the governor?

A. The main control device on the engine

B. Controls the engine speed when the power is required to change

C. The supplementary control device on the engine

D. Can be adjusted automatically

E. Made up of speed sensing arrangement and hydraulic unit

Doğru Cevap: "C" The supplementary control device on the engine

Cevabı Göster

Doğru Cevap: "C" The supplementary control device on the engine
Soru Açıklaması

14.

_____________is necessary for a controlled combustion.

A. The proper amount of air and fuel

B. The proper mixture of fuel and air

C. The fuel and air must be at the proper temperature for ignition

D. The air must be at the proper temperature for ignition

E. All above

Doğru Cevap: "E" All above

Cevabı Göster

Doğru Cevap: "E" All above
Soru Açıklaması

15.

Blue smoke coming from the diesel exhaust would indicate:

A. Excessive fuel consumption / unburned fuel

B. Burning of lube oil due to possible blow by

C. Lean fuel / air mixture, too much air

D. Less amount of fuel consumption

E. None of the above

Doğru Cevap: "B" Burning of lube oil due to possible blow by

Cevabı Göster

Doğru Cevap: "B" Burning of lube oil due to possible blow by
Soru Açıklaması

16.

Lubrication oil viscosity in an operation diesel engine can be reduced by

A. Overloading the engine

B. Increasing the amount of lube oil

C. Decreasing the amount of cooling water

D. Combustion by products contamination

E. Fuel oil dilution

Doğru Cevap: "E" Fuel oil dilution

Cevabı Göster

Doğru Cevap: "E" Fuel oil dilution
Soru Açıklaması

17.

If a centrifugal pump is noisy with excessive vibration during its operation, the cause would most likely be due to_____________

A. Bent shaft

B. Worn wearing rings

C. Reverse rotation

D. Excessive sealing water pressure

E. B and C

Doğru Cevap: "A" Bent shaft

Cevabı Göster

Doğru Cevap: "A" Bent shaft
Soru Açıklaması

18.

When the separated oil is burnt by an .............., the application is recorded in Oil Record Book.

A. oily water separator

B. ejector

C. incinerator

D. chlorinator

E. aeration

Doğru Cevap: "C" incinerator

Cevabı Göster

Doğru Cevap: "C" incinerator
Soru Açıklaması

19.

................ the fire pumps are at work. What word can be used instead of underlined part?

A. inoperable

B. operable

C. in operation

D. arranged

E. out of order

Doğru Cevap: "C" in operation

Cevabı Göster

Doğru Cevap: "C" in operation
Soru Açıklaması

20.

In two stroke engines, if the engine has exhaust valve(s), it is a .................... scavenged engine.

A. cross flow

B. nonflow

C. overflow

D. loop

E. uniflow

Doğru Cevap: "E" uniflow

Cevabı Göster

Doğru Cevap: "E" uniflow
Soru Açıklaması

21.

Which one is not treated on board?

A. sewage

B. feed water

C. freshwater

D. lube oil

E. ballast water

Doğru Cevap: "E" ballast water

Cevabı Göster

Doğru Cevap: "E" ballast water
Soru Açıklaması

22.

"The intake valve is open and exhaust valve is closed. The air is drawn into cylinder while the piston is moving downward" defines;

A. power stroke

B. compression stroke

C. intake stroke

D. exhaust stroke

E. combustion

Doğru Cevap: "C" intake stroke

Cevabı Göster

Doğru Cevap: "C" intake stroke
Soru Açıklaması

23.

An overspeeding diesel engine could best be stopped by:

A. Disconnecting the battery cables from the starting motor

B. Draining the cooling water

C. Draining the hydraulic fluid from the governor sump

D. Blocking the flow of cooling air to the radiator

E. Blocking the air intake and securing the fuel supply

Doğru Cevap: "E" Blocking the air intake and securing the fuel supply

Cevabı Göster

Doğru Cevap: "E" Blocking the air intake and securing the fuel supply
Soru Açıklaması

24.

The pump type using a piston or plunger to remove the fluid;

A. rotary vane pump

B. gear pump

C. reciprocating positive displacement pump

D. screw pump

E. centrifugal pump

Doğru Cevap: "C" reciprocating positive displacement pump

Cevabı Göster

Doğru Cevap: "C" reciprocating positive displacement pump
Soru Açıklaması

25.

With a reciprocating pump, failure to deliver liquid may be caused by_____________

A. Pump not being primed

B. Discharge head too high

C. Liquid plunger packing worn

D. Any of the above

E. Only A and B

Doğru Cevap: "C" Liquid plunger packing worn

Cevabı Göster

Doğru Cevap: "C" Liquid plunger packing worn
Soru Açıklaması

26.

The purpose of the evaporator is to:

A. Absorb latent heat of vaporization

B. Absorb latent heat of fusion

C. Transfer latent heat of vaporization

D. Transfer latent heat of fusion

E. Transfer latent heat of freezing

Doğru Cevap: "A" Absorb latent heat of vaporization

Cevabı Göster

Doğru Cevap: "A" Absorb latent heat of vaporization
Soru Açıklaması

27.

The purpose of a heat exchanger is to:

A. Eliminate hot air from the condenser

B. Maintain steady pressures in a system

C. Heat or cool one fluid by means of another fluid

D. Reduce the engine room temperature in tropical climates

E. Maintain steady temperature in a system

Doğru Cevap: "C" Heat or cool one fluid by means of another fluid

Cevabı Göster

Doğru Cevap: "C" Heat or cool one fluid by means of another fluid
Soru Açıklaması

28.

All refrigerator compressor valves are opened and closed via_____________

A. Springs

B. Camshaft

C. Pressure differential

D. A or C

E. None above

Doğru Cevap: "D" A or C

Cevabı Göster

Doğru Cevap: "D" A or C
Soru Açıklaması

29.

Prior to port arrival, a diesel alternator_____________, turbo alternator_____________, and all the full away procedure should be done_____________

A. Will have to be started/will be shut down/in reverse order

B. Does not have to be started/will have to be shut down/in reverse order

C. Will have to be started/will have to be started/in right order

D. Will have to be shut down/will have to be started/in reverse order

E. Doesn't have to be shut down/will have to be shut down/in right order

Doğru Cevap: "A" Will have to be started/will be shut down/in reverse order

Cevabı Göster

Doğru Cevap: "A" Will have to be started/will be shut down/in reverse order
Soru Açıklaması

30.

Low head pressure can be caused by_____________

A. Too much condensing water

B. Too cold condensing water

C. Leaky discharge valves

D. Insufficient change of refrigerant

E. Any of the above

Doğru Cevap: "E" Any of the above

Cevabı Göster

Doğru Cevap: "E" Any of the above
Soru Açıklaması

31.

The second effect on a two pass evaporator receives its steam from:

A. De-superheated steam

B. Vapors from first effect

C. Auxiliary back pressure

D. Auxiliary forward pressure

E. None of the above

Doğru Cevap: "B" Vapors from first effect

Cevabı Göster

Doğru Cevap: "B" Vapors from first effect
Soru Açıklaması

32.

The drains from both effects in a low pressure evaporator have their pressures equalized in the:

A. Equalizer tank

B. Drain tank

C. Flash chamber

D. Air ejector condense

E. Fuel oil tank

Doğru Cevap: "C" Flash chamber

Cevabı Göster

Doğru Cevap: "C" Flash chamber
Soru Açıklaması

33.

Which factor below is not the cause of vibration and noise in turbines?

A. Unbalance

B. Dıstortion of casing

C. Loose couplings

D. Tight couplings

E. Any above

Doğru Cevap: "E" Any above

Cevabı Göster

Doğru Cevap: "E" Any above
Soru Açıklaması

34.

All boilers have a_____________where the fuel is burned to release the energy, and a_____________is a place where steam and water are seperated.

A. Furnace/combustion chamber

B. Combustion chamber/drum

C. Furnace/fittings

D. Drum/furnace

E. Combustion chamber/fittings

Doğru Cevap: "B" Combustion chamber/drum

Cevabı Göster

Doğru Cevap: "B" Combustion chamber/drum
Soru Açıklaması

35.

.............................. protects the pump shafts from erosion, corrosion and wear

A. Wearing rings

B. Renewable sleeves

C. A hardened metal coating

D. Internally flooded lantern rings

E. Lantern rings

Doğru Cevap: "B" Renewable sleeves

Cevabı Göster

Doğru Cevap: "B" Renewable sleeves
Soru Açıklaması

36.

Cavitation, the forming and bursting of vapor filled cavities or bubbles will result in .............................

A. A loss of thrust

B. Erosion of the blade surface

C. Vibrations in the afterbody of the ship

D. Noise

E. All above

Doğru Cevap: "E" All above

Cevabı Göster

Doğru Cevap: "E" All above
Soru Açıklaması

37.

What kind of bolts would you use on a saltwater line?

A. Cold rolled

B. Brass

C. Cast iron

D. Plastic

E. All of the above

Doğru Cevap: "B" Brass

Cevabı Göster

Doğru Cevap: "B" Brass
Soru Açıklaması

38.

If one cylinder was getting more fuel then others the effect will be ...............

A. That cylinder's being overloaded

B. The exhaust valve's being overheated

C. Average compression

D. Incomplete combustion

E. Complate combustion

Doğru Cevap: "C" Average compression

Cevabı Göster

Doğru Cevap: "C" Average compression
Soru Açıklaması

39.

A cracked cylinder head on a diesel engine could be indicated by:

A. Excessive lube oil consumption

B. Water draining from the fuel leakoff valves

C. Excessive fuel oil consumption

D. Excessive cooling water consumption

E. Combustion gases venting at the expansion tank

Doğru Cevap: "E" Combustion gases venting at the expansion tank

Cevabı Göster

Doğru Cevap: "E" Combustion gases venting at the expansion tank
Soru Açıklaması

40.

When operating at high or low speed in the use of nozzles in a turbine, attention and precaution must be taken that........................

A. The nozzles in use should be wide open

B. Operation with a few nozzles as it's economical

C. The nozzles not in use must be tightly closed

D. All above

E. Only 1 and 2

Doğru Cevap: "D" All above

Cevabı Göster

Doğru Cevap: "D" All above
Soru Açıklaması

41.

An advantage of aluminum pistons compared to cast iron pistons is:

A. Greater high temperature strength

B. Greater weight per cubic meter

C. Increased resistance to wear

D. Low temperature strength

E. Better heat conductivity

Doğru Cevap: "E" Better heat conductivity

Cevabı Göster

Doğru Cevap: "E" Better heat conductivity
Soru Açıklaması

42.

Insufficient refrigerant in a refrigeration plant on board a ship may result in:

A. High discharge pressure

B. Frosting of the crankcase

C. High temperature of the overboard water

D. Low suction pressure

E. Low temperature of the sea water

Doğru Cevap: "D" Low suction pressure

Cevabı Göster

Doğru Cevap: "D" Low suction pressure
Soru Açıklaması

43.

The removal of contaminating impurities from lubricating oil will ................

A. Increase engine wear

B. Decrease engine wear

C. Increase possible breakdowns

D. Decrease possible breakdowns

E. 2 and 4

Doğru Cevap: "E" 2 and 4

Cevabı Göster

Doğru Cevap: "E" 2 and 4
Soru Açıklaması

44.

A propulsion diesel engine is normally shut down by .........................

A. Shutting off the air supply

B. Overspeeding the engine

C. Securing the fuel supply

D. Securing the ignition system

E. All above

Doğru Cevap: "C" Securing the fuel supply

Cevabı Göster

Doğru Cevap: "C" Securing the fuel supply
Soru Açıklaması

45.

The valve which is always partially open when the evaporator is in operation is the:

A. Vapor valve

B. Continuous blowdown valve

C. Bottom blowdown valve

D. Surface blowdown valve

E. Fresh water valve

Doğru Cevap: "B" Continuous blowdown valve

Cevabı Göster

Doğru Cevap: "B" Continuous blowdown valve
Soru Açıklaması

46.

Which valve is normally closed when charging an R22 or R134 a refrigeration system through the high side

A. The thermal expansion valve

B. The dehydrator inlet valve

C. The suction line valve

D. Both the thermal expansion valve and dehydrator inlet valve

E. The liquid line king valve

Doğru Cevap: "E" The liquid line king valve

Cevabı Göster

Doğru Cevap: "E" The liquid line king valve
Soru Açıklaması

47.

The thermostatic expansion valve of R22 or R134 a refrigeration system controls the:

A. Back pressure in the evaporator coils

B. Temperature in the refrigerated space

C. Superheat in the refrigerant leaving the evaporator

D. Refrigerant pressure in high side

E. Temperature in the condenser

Doğru Cevap: "C" Superheat in the refrigerant leaving the evaporator

Cevabı Göster

Doğru Cevap: "C" Superheat in the refrigerant leaving the evaporator
Soru Açıklaması

48.

Sediment collects in a tubular purifier:

A. On top cover

B. In drain line

C. On sides of bowl

D. On the discs

E. None of above

Doğru Cevap: "C" On sides of bowl

Cevabı Göster

Doğru Cevap: "C" On sides of bowl
Soru Açıklaması

49.

To produce steam on board a ship, ................. are mostly used.

A. steam turbines

B. purifiers

C. boilers

D. clarifiers

E. evaporators

Doğru Cevap: "C" boilers

Cevabı Göster

Doğru Cevap: "C" boilers
Soru Açıklaması

50.

Which of the followings is not one of the qualities of the governor?

A. The main control device on the engine

B. Controls the engine speed when the power is required to change

C. The supplementary control device on the engine

D. Can be adjusted automatically

E. Made up of speed sensing arrangement and hydraulic unit

Doğru Cevap: "C" The supplementary control device on the engine

Cevabı Göster

Doğru Cevap: "C" The supplementary control device on the engine
Soru Açıklaması

TEST BİTTİ.
CEVAPLARINIZI KONTROL EDİNİZ.