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Gemiadamları Deneme Sınavları
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Denizcilik İngilizcesi - Geçme Notu: 75
Deneme Sınavı - 9 / Cevap
Anahtarı
1. This gauge
measures both inlet and outlet pressures of a strainer:
1) A compound gauge
2) A duplex gauge
3) A biogauge
4) Pressure / Vacuum gauge
5) None of the above
2. Which one is not identical with
the characteristics of the construction of a-2-stroke diesel
engines?
1) Instead of valve holes, ports are installed
2) A cycle is completed in 2 strokes of the piston
3) Produce high power in compare with 4 stroke engines
4) The maintenance is simple
5) A cycle is completed
in 2 revolution of the crackcase
3. All refrigerator compressor
valves are opened and closed via ............................
1) Springs
2) Camshaft
3) Pressure differential
4) 1 or 3
5) None above
4. One horsepower equals
....................
1) 1000 watts
2) 746 watts
3) 100 watts
4) 940 watts
5) 786 watts
5. When distilling salt water the
cooling-water discharge from the distiller is fed back to the
evaporator as feedwater:
1) To cut down on the amount of cooling water needed
2) To prevent an excess amount of cooling water from being
discharged to the bilges
3) To supply hot water
to the evaporator for more economical operation
4) To supply sufficient amount of sea water
5) None of the above
6. If the flow of water from a
centrifugal pump is stopped by closing the discharge valve with
the pump running:
1) The relief valve will open
2) The water pressure
will stabilize at shut off head
3) The water pressure will tend tor ise continuously
4) The driver will be over loaded
5) The water temperature will tend to decrease continuously
7. The purpose of an evaporator is
to .......................
1) Transmit the latent heat of fusion
2) Transmit the latent heat of evaporation
3) Absorb the latent
heat of evaporation
4) Absorb the latent heat of fusion
5) Any above
8. .......................... are the common parts within
the 2 and 4 stroke diesel engines.
1) Piston, valves, cylinder, fuel injector
2) Crankshaft, crosshead, cylinder
3) Turbocharger, piston, gudgeonpin, cylinder
4) Crankshaft, connecting rod, pistons
5) Cylinder, connecting
rod, pistons
9. Which factor below is not the
cause of vibration and noise in turbines?
1) Unbalance
2) Distortion of casing
3) Loose couplings
4) Tight couplings
5) Any above
10. Pre-ignition can be caused by
.................... in an operating diesel engine.
1) Excessively late fuel injection
2) Oil in the air charge
3) Water in the fuel
4) Injection continuing after the fuel charge is ignited
5) None above
11. Which of the following actions should you take to
correct a low condensing pressure in a refrigeration system?
1) Purge the condenser
2) Remove refrigerant
3) Adjust the thermostatic expansion valve
4) Increase the compressor speed
5) Add refrigerant
12. ............................. is a process, in which
the temperature of a space on whatever takes place in, is
reduced below that of their surroundings.
1) Refrigeration
2) Air conditioning
3) Ventilation
4) Heating
5) Freezing
13. A ball bearing will overheated
if:
1) Completely full of
grease
2) Half full of grease
3) In us efor a long time
4) Operated at high speed
5) Operated at high speed
14. Emergency generators are placed
.......................
1) Near the machinery space
2) Above the bulkhead or
freeboard deck whichever the higher
3) Midships near the engine room casing
4) Above the deep load line
5) None above
15. In a 4 stroke engine 2
revolution of the crank is completed within the angle of
....................
1) 720°
2) 360°
3) 180°
4) 90°
5) 45°
16. What will happen to a small
diesel engine that is equipped with an "auto type" thermostat if
the bellows develop a hole in it?
1) The engine will
overheat
2) The engine will remain cold
3) The engine will remain not start
4) The cooling water will "by pass" the engine
5) None of the above
17. Which of the following is not
one of the parts of D/G overhaul?
1) Valve rotator
2) Valve sprindle
3) Intake valve
4) Valve seat
5) Starting valve
18. A spring bearing on the line
shaft is lubricated by:
1) The lube oil gravity tank
2) Water leak off from
the stern tube
3) An oil ring and scraper
4) The main lube oil pump
5) Any above
19. The second effect on a two pass
evaporator receives its steam from:
1) De-superheated steam
2) Vapors from first
effect
3) Auxiliary back pressure
4) Auxiliary forward pressure
5) None of the above
20. Flashlights used aboard tankers
must be ................
1) Waterproof
2) Of the three cell
type
3) Approved by the Board of fire underwriters
4) All above
5) 1 and 3
