大管轮轮机英语综合
C. discharge through the suction side of the pump casing D. require more power to turn the shaft
19. Black smoke coming from a boiler can be caused by ______. A. low water level B. low oil pressure
C. excessively high fuel pressure D. an improper air/fuel ratio
20. Fuel injection equipment must be kept in good condition, timed correctly, and the _____ in each cylinder must also be carefully balanced so that individual cylinders are not overloaded. A. MIP B. MCR C. MEP D. BHP
21. The separation of impurities and water from __ is essential for good combustion of diesel engines. A. lube oil B. fuel oil C. turbine oil D. grease
22. When in operation, it is unavoidable that a small amount of oil ______through leakage, and in order to compensate for these leaks the system is connected to a feed pump. A. escapes B. overheats C. expands D. accelerates
23. The remaining oil/water mixture now flows down into the fine separating compartment and moves slowly between the ___ in the Turbulo separator.
A. catch plates B. swash plates C. cover plates D. bedplates 24. The oil sludge is burnt in the ______onboard. I ll show you the ashes.
A. boiler B. main engine C. auxiliary engine D. incinerator
25. Deck machinery, which is also known as hull machinery, includes all power driven equipment located _____ the machinery spaces that is _____ with the main propulsion plant.
A. inside/associated B. inside/not associated C. outside/associated D. outside/not associated 26.
When the desired rudder angle is attained by a typical double ram electro-hydraulic steering gear, the ______.
A. ram relief valves bypass oil to stop rudder movement B. six-way valve shifts to the neutral flow position
C. steering pump electric motor is de-energized by the transfer switch D. follow-up gear takes the hydraulic pump off stroke
27. The drive motor will have a brake arranged to fail-safe, i.e. it will ______the load if power fails or machine is stopped.
A. cast B. put C. hold D. let out
28.
Special thrust devices are provided on ships to improve their ______at zero ship speed when the rudder is relatively ineffective.
A. brake capabilities B. reversing capabilities C. maneuvering capabilities D. acceleration capabilities 29.
If a hydraulic pump is overheating, the cause may be______. A. excessive internal leakage in the pump B. low discharge pressure and fluid flow
C. excessive fluid level in the hydraulic reservoir D. operation of the pump at 100% efficiency
30.
Some chloronated flourocarbon refrigerants may decompose into a toxic irritating gas if it is ______.
A. stored at temperatures below 60 degrees Fahrenheit B. charged into a system having copper fittings C. allowed to mix with compressor oil D. exposed to an open flame or hot surface
31. Excessive lube oil consumption by a reciprocating air compressor can be caused by ______.
A. using a slightly dirty air filter B. using oil having an excessive viscosity C. intercooler or after-cooler leaks D. carrying the oil level higher than normal 32. After fitting back in place the gear wheels, don't forget to______ them.
A. fulfill B. eliminate C. grease D. bend
33. In a refrigeration system, if the cooling water to the condenser fails, the______.
A. box temperature solenoid valve will close B. expansion valve will close C. compressor will shutdown D. king valve will open 34. A feeler or thermal bulb is used for the expansion valve to______.
A. detect the temperature B. detect the pressure
C. heat the refrigerant D. accelerate the refrigerant
35. The amount of moisture in a given sample of air, when compared with the amount of moisture the
air could hold if totally saturated at the existing temperature of the sample, is called ______. A. absolute humidity B. specific humidity C. effective humidity D. relative humidity 36. The division of kilowatt load between two paralleled alternators is determined by the ______.
A. amount of field excitation of the leading machine B. load-speed characteristics of the governors
C. amount of field excitation to the lagging machine D. type of alternator
37. The resistance of a conductor varies ______.
A. directly as its length and inversely as its cross-sectional area B. inversely as its length and directly as its cross-sectional area C. directly as its length and directly as its cross-sectional area D. inversely as its length and inversely as its cross-sectional area
38. The pump used to send the bilge water into the oily water separator _____ the mixture because
this might create finer oil particles.
A. should agitate B. should not agitate C. should mix up D. should not add up 39. Temperature measurement by instruments will give a value in degree Celcius. This scale of
measurement is normally used for all readings and temperature values ______dealing with theoretical calculations involving the gas laws.
A. in addition to B. in addition that C. except that D. except when 40. Bourdon Tube is probably the most commonly used ______measuring instrument.
A. the absolute pressure B. the gauge pressure C. the vacuum pressure D. the differential pressure
41. The most inefficient method of voltage reduction from the stand-point of power loss, is a/an
______.
A. capacitor in series with the load B. inductor in series with the load C. capacitor and inductor in series with the load D. resistor in series with the load
42. While on watch in the engine room, you hear a continuous sounding of the general alarm. Which
of the following actions should you take? A. Make an entry in the official logbook.
B. Open the master control valves on the fixed CO2 system. C. Start the fire pump and check discharge pressure. D. Secure auxiliary condenser overboard discharge.
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