轮机部三管轮考试题2(轮机英语)

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2

The successful operation of any engine or machine and ____ depend on effective lubrication.

  • A.their no trouble period
  • B.their freely trouble period
  • C.its free trouble life
  • D.its trouble-free life
3

Each ship shall carry on board a shop security plan approved by .

  • A.the chief engineer officer
  • B.the master of the ship
  • C.the manager of the company
  • D.the Administration
6

Which of the petroleum products listed has the lowest flash point?

  • A.Hydraulic oil
  • B.Lubricating oil
  • C.Diesel oil
  • D.Refrigeration oil
7

Which of the following statements concerning a simple parallel resistance circuit is correct?

  • A.The voltage drop across each resistor is the same
  • B.The total current flow equals the reciprocal of the sum of the individual currents
  • C.The total resistance equals the sum of the individual resistances
  • D.The total voltage equals the sum of the individual voltages across each resistance
11

Crank web deflection readings will give a positive indication of _____.

  • A.worn main bearing journals
  • B.torsional stress deformation
  • C.slack thrust bearings
  • D.bearing shells shim dimensions
12

The main purpose of starting the diesel engine on air briefly is .

  • A.to inspect if the cylinder has the water leakage
  • B.to expel out the residual water /gas /oil from the cylinder
  • C.to check if fuel supply is normal
  • D.A and B
13

Oily water separator mis-alarms, the most possible reason is ____.

  • A.separating oil too fast
  • B.the sensor flushed badly
  • C.the discharge solenoid value out of order
  • D.too low heating temperature
14

Fuel is not supplied to the corresponding cylinders due to _____.

  • A.a failure of the motor
  • B.a failure of lubricator
  • C.a failure of cylinder
  • D.a failure of fuel pump
15

Which of the listed conditions will affective pressure the most in the cylinder of a diesel engine?

  • A.TBN of the lubricating oil
  • B.Temperature of the lube oil
  • C.Completeness in the mixing of the fuel and air
  • D.Temperature of the cooling (sea) water
16

A centrifugal bilge pump requires priming _____.

  • A.primarily to lubricate the shaft seals
  • B.due to the inability of this type of pump to lift water to cover the suction (eye) of the impeller
  • C.to initially unload the pump by having its head pressure equal to discharge pressure
  • D.in order to overcome the potential energy of water in the discharge line
18

Sludge may form. in the lubricating oil crankcase of a reciprocating air conditioning compressor as a result of ______.

  • A.wax precipitation in the lube oil
  • B.contamination by dust, scale, or moisture
  • C.refrigerant bubbles in the lube oil
  • D.refrigerant reducing the lube oil viscosity
21

A segregated ballast system is a system where _____.

  • A.all ballast is processed through the oily water separator
  • B.ballast is taken on and discharged through a separate main deck riser
  • C.ballast and cargo tanks are separated by cofferdams
  • D.all ballast lines, tanks, and pumps are independent of those used for oil
23

Engine operating conditions may be indicated by the color of the exhaust smokeBlack smoke could indicate____.

  • A.an insufficient speed droop setting
  • B.an overloaded engine
  • C.clogged drain holes in the oil control rings
  • D.complete combustion
24

The engine has one or two group of fuel pumps, depending upon _____.

  • A.the number of fuel valves
  • B.the number of cylinders
  • C.the speed of engine
  • D.the power of engine
25

The objective of ISPS Code is .

  • A.to protect the marine environment
  • B.to provide a method to avoid an accident
  • C.to protect the ship from collision
  • D.to keep terrorism action away from ships
26

The most common cause of scale formation in an auxiliary boiler is _____.

  • A.concentrations of calcium sulfate in the boiler water
  • B.fuel oil in the feed water
  • C.improper treatment of the feed water with calcium sulfate
  • D.excessive feed water alkalinity
27

Which statement concerning the collection of fresh water is FALSE?

  • A.Fresh water may be obtained from fish
  • B.lifeboat covers or canopies should be washed with rain before drinking water is collected
  • C.Fresh water may be collected from condensation inside the life-raft
  • D.Freshwater cannot be produced from standing seawater
28

The responsibilities of the engineer officer in charge of the watch do not include ________ .

  • A.to ensure the main propulsion plant are kept under constant surveillance
  • B.to ensure the auxiliary systems are kept under constant surveillance
  • C.to inspect the steering gear spaces at suitable intervals
  • D.to inspect and overhaul the equipments in his charge
29

Cylinders of marine diesel engines are normally cooled by _____.

  • A.sea water
  • B.fine mineral oil
  • C.sanitary water
  • D.fresh water
30

A pump is defined as device that

  • A.produces pressure
  • B.imparts energy to a fluid to move it from level ‘A’ to level ‘B’
  • C.creates a vacuum to move a liquid in all installation
  • D.is to develop a pressure differential
34

When the heat load begins to increase, the needle valve of an expansion valve will______.

  • A.move in an opening direction
  • B.move in a closing direction
  • C.either open or close
  • D.not move at all
35

____ into the cylinder because no fuel can burn _____ it.

  • A.Air must be admitted/without
  • B.Oil must be injected/without
  • C.Air must be admitted/with
  • D.Oil must be injected/with
36

Copper is often used as an electrical conductor because it _____.

  • A.has high resistance at low temperatures
  • B.has a highly polished surface
  • C.is able to pass current with little opposition
  • D.holds insulation together well
37

Differential needle valves used in fuel injectors are directly closed by .

  • A.cam action
  • B.spring force
  • C.fuel oil pressure
  • D.firing pressure
38

To operate a centrifugal fire pump at reduced capacity, you should _____.

  • A.readjust the relief valve
  • B.throttle the suction line
  • C.throttle the discharge valve
  • D.open the priming line
39

Which one of three elements for a fire on a tanker vessel is most difficult to eliminate (isolate)?

  • A.a combustible element, fuel
  • B.energy (resources for ignition) to start the combustion
  • C.oxygen to support the combustion
  • D.both A and C are correct
40

During working, thermostatic expansion valve should be _____.

  • A.either all the way open or all the way closed
  • B.normally fully open
  • C.throttled depending on load
  • D.controlled by liquefied pressure
41

Voltage generated by most AC generators is fed from the machine to the bus by means of_____.

  • A.brushes on a commutator
  • B.brushes on slip rings
  • C.slip rings on a commutator
  • D.direct connections from the stator
43

When the vessel on the full speed ahead, if full astern immediately ____ the main engine start astern and fuel injection.

  • A.after the thrust power is zero
  • B.after the torsion is zero
  • C.surpass the critical point on the water turbo phase
  • D.after the speed is zero
44

Since the burning or combustion takes place within the engine itself, the engine is known as _____.

  • A.a fire -tube boiler
  • B.an internal combustion engine
  • C.an external combustion engine
  • D.an internal combustion generator
46

When you notice oil on the water near your vessel while taking on fuel, you should FIRST _____.

  • A.stop loading
  • B.notify the senior deck officer
  • C.notify the terminal superintendent
  • D.determine whether your vessel is the source
48

The minimum speed an engine must attain before ignition can occur depends upon _____.

  • A.the type and size of the engine
  • B.the condition of the engine
  • C.ambient temperature
  • D.all of the above
50

Clogged or partially obstructed exhaust ports on a diesel engine can cause____.

  • A.over-speeding of the engine
  • B.failure of the engine to shut down
  • C.no effect of engine mounting bolts
  • D.high exhaust temperatures