sistemas de aeronaves 2 quiiz

A decrease in the temperature of the air causes the density to _____________. increase. decrease.

A decrease in the pressure of the air causes the density to. increse. decrese.

The two gases that make up the majority of the atmosphere are _______ and ________. nitrogen , oxigen. air, presure.

4. Oxygen _________ (does or does not) burn. does. does not.

Long exposure at an altitude of 10,000 feet without supplemental oxygen will result in _______ and fatigue. headaches. oxigen.

A condition in which the human body is deprived of the oxygen it needs is called _______ . hypoxia. drowning.

The rate and depth of our breathing is controlled by ______ in our blood. carbon dioxide. dioxide.

Carbon monoxide is dangerous because it takes the place of the _______ the brain needs to function. oxigen. air flow.

The basic difference between ice, water, and steam is the amount of ________ each contains. heat energy. energy power.

The basic unit of heat in the U.S. system is the _______, and in the metric system it is the _______. british thermal unit "BTU". calorite.

Heat energy that causes a material to change its temperature is called ________ heat. sensible. gredes.

Heat energy that causes a material to change its physical state without changing its temperature is called ________ heat. latent. carorie.

* 13. The two reference points used for measuring temperature are: A) the freezing point of water. B) the boiling point of water.

14. Absolute zero is the temperature at which there is no ________ motion. molecular. particular.

The absolute temperature scale that uses the same graduations as the Celsius scale is the. Kelvin scale. centigrade scale.

Pressure that is referenced from zero pressure is called ______ pressure. absolute. insolute.

Pressure that is referenced from the existing atmospheric pressure is called ________ pressure. differential. pressure.

Pressure that is referenced from another pressure is called ________ pressure. gauge. grate.

The number of Btu of heat energy needed to change the temperature of one pound of a substance one degree Fahrenheit is called the ________ of the substance. specific heat. specific time.

* 20. Three methods of heat transfer are: * a. ________ * b. ________ * c. ________. a. Conduction. b. Convection. c. Radiation.

A vacuum is usually measured in units of ________. mercury (in. Hg). titaniun.

A "deep vacuum" is usually measured in units of ______. microns. meters.

23. When oxygen is needed for a backup in a pressurized aircraft the ________ system is used because of its simplicity, efficiency, and minimum maintenance required. chimical oxigen generator. dioxide.

Aviators' oxygen is different from hospital oxygen because of its low ________ content. water. soap.

The type of contaminant most generally found in gaseous oxygen systems is ________. water. heat.

In the onboard oxygen generating system (OBOGS), engine compressor bleed air flows through beds of a ________ material that mechanically filters the oxygen from the nitrogen and other constituents of the air. molecular sieve. muscular.

The rate of release of the oxygen from a chemical oxygen generator system ________ be adjusted for the altitude flow. may not. is not.

The generators used in a chemical oxygen generator system are inert below ________ °F even under a severe impact. 400. 250.

Supplemental oxygen is normally provided for passengers of a pressurized aircraft by the ________-type system. continuous-flow. air flow.

In a continuous-flow oxygen system, the pressure of the oxygen in the high-pressure cylinder is reduced before it goes to the regulator by a/an ________ valve. pressure-reducing. pressure flow.

31. If the pressure reducer valve in a continuous-flow oxygen system should malfunction, a ________ valve will prevent damage to the system. relief. flow.

32. Two types of regulators that may be used in a continuous-flow oxygen system are _______ and _______ regulators. manual. automatic. may not.

33. The amount of oxygen a regulator will deliver to flow to a continuous-flow mask is determined by a ________ in the mask outlet. calibrated orifice. relief.

34. The continuous-flow oxygen mask worn by a person with a known respiratory or heart problem should receive its oxygen from a ________ mask outlet. therapeutic. continuous-flow.

35. A rebreather-bag-type oxygen mask is used with a ________-type oxygen system. continuous-flow. demand.

36. The cockpit crew of a pressurized aircraft normally have their supplemental oxygen supplied by a ________-type oxygen system. demand. cabin air.

37. A diluter-demand oxygen regulator dilutes the oxygen it meters at the lower altitudes with ________. cabin air. inhales.

38. The demand valve on a diluter-demand oxygen regulator opens each time the wearer of the mask ________. inhales. ICC / DOT.

39. High-pressure oxygen cylinders installed in an aircraft must meet the specifications of the _______ or the _______. ICC. DOT. 400.

Oxygen cylinders are required to be _____ tested periodically and the date of the test stamped on it. hydrostatically. pressure.

41. Standard high-pressure oxygen cylinders should be hydrostatically tested every __ years. 5 years. 3 years.

42. Lightweight high-pressure oxygen cylinders should be hydrostatically tested every __ years. 3 years. 5 years.

43. A lightweight high-pressure oxygen cylinder should be hydrostatically tested to a pressure of __ psi. 3083(5/8 - 5/3. may not.

44. A lightweight high-pressure oxygen cylinder should be retired from service after __ years. 24 years. 10 years.

45. The pressure inside an oxygen bottle should never be allowed to drop below __ psi. 50 psi. 40 psi.

46. High-pressure oxygen bottles are painted _____. green. yellow.

47. Low-pressure oxygen bottles are painted _____. yellow. green.

48. The amount of oxygen in a gaseous oxygen bottle is indicated by its _____. pressure. 1,925.

49. If a gaseous oxygen system is to be charged to 1,850 psi at 70°F when the ambient temperature is 60°F, the filling pressure should be __ psi. 1925 psi. 1000 psi.

50. Any time an oxygen system has been opened, it should be purged for about __ minutes to remove all of the air from the oxygen lines. 10 minutes. 5 minutes.

51. Thread lubricants used with oxygen system components must contain no _____. petroleum. nonpetroleum.

52. Leaks in an oxygen system are located by spreading a _____ soap solution over the suspected area and watching for bubbles. nonpetroleum. petroleum.

53. A blowout plug on the side of the fuselage will be blown out if the oxygen system has been discharged through the _____. pressure relief valve. nonpetroleum.

54. Thread lubricants approved for use in an oxygen system have a/an ______ base. water. pressure relief valve.

Pressurization air for reciprocating-engine-powered general aviation aircraft is compressed by the. turbocharger. check.

56. Two types of mechanical compressors used to supply pressurizing air for a reciprocating-engine-powered airplane area. Roots blower type. Centrifugal type. turbocharger.

When two or more mechanical air compressors supply the cabin pressure for a pressurized aircraft, the loss of cabin pressure if one compressor should fail is prevented by a delivery air duct valve. check. compressor.

In a turbine-engine-powered aircraft the air for pressurization comes from the section of the engine. compressor. unpressurized.

The air used for pressurizing a turbine-engine-powered aircraft is called air. compressor bleed. unpressurized.

The cabin altitude is the same as the flight altitude when the aircraft is operating in the mode. unpressurized. compressor bleed.

The cabin altitude is maintained at a constant value as the flight altitude changes when the pressurization system is operating in the mode. unpressurized. isobaric.

The cabin altitude is maintained at a constant value as the flight altitude changes when the pressurization system is operating in the mode. isobaric. constant.

The cabin pressure is maintained a given amount higher than the outside air pressure when the pressurization system is operating in the mode. constant differential. isobaric.

The maximum differential pressure allowed in a pressurized aircraft is determined by the strength of the . cabin structure. constant.

The amount of air the cabin pressure regulator in Figure 9-23 allows to leave the cabin is determined by the pressure. reference-chamber. metering.

When the cabin pressure regulator in Figure 9-23 is operating in the isobaric mode, cabin pressure is held constant by reducing the flow of reference-chamber air through the isobaric valve. metering. isobaric.

66. Refer to Figure 9-23. Anytime an increase in cabin pressure causes the isobaric metering valve to move toward the OPEN position, the outflow valve ______. (opens or closes). opens. closes.

67. Refer to Figure 9-23. When the outside air pressure decreases enough that the difference between the cabin pressure and the outside pressure reaches the pressure-differential limit allowed by the airframe manufacturer, the differential metering valve ______. (opens or closes). opens. closes.

68. Refer to Figure 9-23. The isobaric metering valve is controlled by the ______. (bellows or diaphragm). bellows. diaphragm.

69. Refer to Figure 9-23. The differential metering valve is controlled by the ______. (bellows or diaphragm). bellows. diaphragm.

70. If the cabin rate of climb is too great, the rate control will cause the outflow valve to close ______. (faster or slower). faster. slower.

71. A negative-pressure relief valve is incorporated in a pressurization system to prevent cabin pressure ever becoming ______ (lower or higher) than the surrounding air pressure. lower. higher.

72. All positive pressure inside the cabin is relieved when the aircraft is on the ground by the ______ valve opening. dump valve. lower.

73. If "auxiliary ventilation" is selected on the pressurization control while cruising at altitude, cabin pressurization will be dumped, and the cabin altitude will ______ (increase or decrease). increase. decrease.

74. Airflow is increased in some areas of an aircraft by using a ______ to augment the airflow. jet pump. diaphragm.

Aircraft that are heated with exhaust system heaters should have ________ detectors installed on the instrument panel. carbon monoxide. combustion.

Two types of airflow through a combustion heater are _______ air and _______ air. combustion / ventilating. carbon.

Too much combustion air is prevented from flowing through a combustion heater by either a combustion air _______ valve or a _______ regulator. relief. differential-pressure. Combustion.

Regular maintenance of a combustion heater consists of cleaning or replacing the fuel _______ and checking all connections for _______. Page. filter. leaks. relief.

The temperature produced by a combustion heater is controlled by the thermostat which controls the ________ going to the heater. fuel. Combustion.

Heat for the cabin of a jet transport airplane is provided by _____ air. Compressor bleed. Air-cycle.

In a jet transport airplane, hot compressor bleed air is mixed with cold air from the _____ machine to get air of the correct temperature for the cabin. Air-cycle. Primary.

The first heat that is lost from the hot compressor bleed air in an air-cycle machine is removed by the _____ heat exchanger. Primary. Centrifugal.

After the air leaves the primary heat exchanger it is heated as it is compressed by the _____ compressor. Primary. Centrifugal.

After leaving the air-cycle machine centrifugal compressor the air gives up some of its heat as it passes through the _____ heat exchanger. Secondary. Expansion turbine.

More heat is removed from the pressurizing air after it leaves the secondary heat exchanger as it spins the _____ which drives the centrifugal compressor. Expansion turbine. Expands.

The final stage of cooling is done when the air _____ upon leaving the turbine. Expands. Water separator.

Moisture that condenses from the pressurizing air after it leaves the expansion turbine is removed by the _____. Water separator. Hot air bleed.

Water is prevented from freezing in the water separator by routing some _____ around the air-cycle machine to mix with cold air and raise its temperature. Hot air bleed. Centrifugal.

In a vapor-cycle cooling system, heat from the cabin is absorbed into the refrigerant in the ________. evaporator. condenser.

Heat taken from the cabin is transferred into the outside air by the ________. condenser. liquid.

The refrigerant enters the evaporator as a _______ pressure _______. low. liquid.

The refrigerant leaves the evaporator as a _______ pressure _______. low. vapor.

* The refrigerant enters the condenser as a _______ pressure _______. high. vapor.

The refrigerant leaves the condenser as a _______ pressure _______. high. liquid.

The receiver-dryer holds the refrigerant in its ________ state. liquid. high.

The two units that divide an air conditioning system into a high side and a low side are the _______ and the _______. compressor. expansion valve.

The component in an air conditioning system that increases both the temperature and t. compressor. clutch.

Cycling of a compressor that is belt-driven from the aircraft engine is accomplished by using an electromagnetic ________ in the drive pulley. clutch. expansion valve.

The condenser is in the ________ side of an air conditioning system. high. compressor.

The air conditioning system component that meters liquid refrigerant into the evaporator coils is the ________. expansion valve. low.

The evaporator is in the ________ side of an air conditioning system. low. compressor.

The air leaving the evaporator of a properly functioning air conditioning system should have a temperature of between _______ °F and _______ °F. 40. 50.

When using an electronic leak detector, the probe should be held ________ a location of a suspected leak. below. clutch.

* Two types of ice control are: • a. ________ • b. ________. Deicing. anti-icing.

The ice control system that prevents the formation of ice is the ________ system. anti-icing. electric.

The ice control system that removes ice after it has formed is the ________ system. Deicing. anti-icing.

Frost on an aircraft wing ________ (does or does not) constitute a hazard to flight. does. does not.

A pitot head is anti-iced with a/an ________ (electric or hot air) heater. electric. hot air.

An operational check of a pitot-static tube heater may be made by watching the ________ when the heater is turned on. ampere. anti-icing.

Frost may be removed from an aircraft by spraying it with a deicing fluid that normally contains _______ and _______. ethylene glycol / water. water.

Electrically heated windshields that use a conductive film as the heating element are energized with ________ (AC or DC). ac. dc.

The temperature of an electrically heated windshield is sensed by ________-type sensors laminated between the glass panels. thermistor. Deicing.

10. A breakdown of the electrically conductive film inside an electrically heated windshield can cause ________. arcing. after.

* 11. Three methods of preventing ice from forming on a windshield and obstructing pilot visibility are: • a. ________ • b. ________ • c. ________. electrical heating. alcohol spraying. hot air blast.

The fluid that is used for anti-icing propeller blades is a mixture of _______ and _______. isopropyl alcohol / water. water.

Current for the heating elements in an electrothermal deicing system for a propeller is carried from the airframe into the propeller through _______ and _______. brush blocks. slip rings.

Reciprocating-engine-powered aircraft get the air for inflating the deicer boots from a/an ________. engine-driven air pump. airflow.

Deicing systems are turned on ________ (before or after) icing is encountered. after. after.

Deicer boots are attached to modern aircraft leading edges with a/an ________. adhesive. after.

Before installing a surface-bonded deicer boot to the leading edge of an aircraft wing, the paint must be ________ (cleaned or removed). removed. cleaned.

The oil that is used to lubricate a "wet" vacuum pump is removed from the discharge air by a/an ________. oil separator. water sepatetor.

Deicer boots should be cleaned with _______ and _______. mild soap. water.

Deicer boots are actuated symmetrically to minimize control problems caused by disturbance of the ________. airflow. air hot.

The inflation sequence of a pneumatic deicer boot system is controlled by a ________. distributor valve. removed.

The amount of suction used to hold the deicing boots deflated when the system is not operating is controlled by a/an ________. suction regulating valve. suction regulating valve.

23. During normal operation of a pneumatic deicer system, the air pressure gage will ________ (fluctuate or remain steady). fluctuate. can.

24. During normal operation of a pneumatic deicer system, the suction gage will ________ (fluctuate or remain steady). fluctuate. remain steady.

25. The component in a multi-engine pneumatic deicing system that directs suction into the boots when the system is not operating is the ________. distributor valve. fluctuate.

26. Two sources of heat for thermal ice control on reciprocating-engine-powered aircraft are. exhaust gas heat exchangers. combustion heaters. can.

27. The temperature of the air produced by a combustion heater is controlled by cycling the ________ (fuel or ignition) on and off. fuel. ignition.

28. Carburetor ice ________ (can or cannot) form when the outside air temperature is above 70°F. can. cannot.

29. Visible moisture ________ (is or is not) required for the formation of carburetor ice. is. is not.

30. The heat for eliminating carburetor ice normally comes from the ________. exhaust system shroud. fuel.

31. Fuel-injected engines have an alternate source of induction system air to use in the event the ________ icing over. main air filter. can.

32. When carburetor heat is used, the intake air ________ (is or is not) filtered. is not. is.

33. A carburetor heater system for a sea-level engine should be able to increase the temperature of the air by ________ °F. 90. 67.

34. Ice is prevented from sticking to the throttle valve and venturi in a carburetor by spraying ________ into the carburetor inlet. isopropyl alcohol. main air filter.

35. If the compressor of a turbine engine is immobile because of ice, the ice should be melted with ________. warm air. fuel.

36. Type I FPD fluids are used primarily for ________ (anti-icing or deicing). anti-icing. deicing.

37. Heated FPD fluids are most effective for ________ (anti-icing or deicing). anti-icing. deicing.

38. For most effective anti-icing, the FPD fluid is applied ________ (hot or cold). hot. cold.

39. Acrylic plastic windshields on small general aviation aircraft are treated to ease the removal of rain by coating them with a smooth coat of ________. wax. wipers.

40. Three types of rain removal systems for large aircraft are: mechanical (wipers). chemical repellent. pneumatic (air blast). should not.

41. Chemical rain repellent ________ (should or should not) be applied to a dry windshield. should. should not.

42. The air for a pneumatic rain removal system comes from the ________. turbine engine compressor (bleed air). wax.