2208 final Word Scramble

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Question	Answer
What component in a vaporcycle cooling system will most likely be at fault if a system would not take a free on charge	Expansion valve
What is ventilating air used for on a combustion heater	Carries heat to the places where needed
The point at which Freon flowing through a vapor cycle cooling system absorbs heat and changes from a liquid to a gas is the	Evaporator
When an aircraft oxygen system has developed a leak the lines of fitting should be	Bubble tester with a special soap solution manufacture specifically for that purpose
An aircraft oxygen bottle may be considered airworthy if it has been hydrostatically tested in identifying	What’s the test eight DOT number and serial number stamped on the cylinder near the neck
What component might be possibly damage of liquid refrigerant is introduced to the low side of a vapor cycle cooling system when the pressure is too high or the outside air temperature is too low	Compressor
The function of the evaporator in a Freon cooling system is to	Lower the temperature of the cabin air
Turbine engine air used for air conditioning in pressurization is generally called	bleed air
Which section of a turbine engine provides high pressure bleed air to an air cycle machine for prejualization and air conditioning	Low or high pressure compressor
Primary difference between aviation breathing oxygen and other types of commercially available compressed oxygen is that	Aviation breathing oxygen has had all the water vapor removed
High pressure cylinders containing oxygen for aviation used to be identified by their	Green color and the words AVIATORS BREATHING OXYGEN stenciled in 1 inch white letters
If oxygen bottle pressure is allowed to drop below a specific minimum it may cause	Moisture to collect in the bottle
Evacuation of a vapor cycle cooling system removes any water that may be present by	Lowering the boiling point of the water and drawing out the vapor
Which oxygen system employees a regulator that operates only when the user inhales	Continuous flow system
When servicing and air-conditioning system that has lost all his Freon is necessary to	Check oil and add as necessary evacuate the system and add Freon
How compressor bleed air operates the condition air system on some turbine aircraft code air supplied by the	Air cycle air conditioning
What is the condition of the refrigerant as it leaves the condenser of a vapor cycle cooling system	High pressure liquid
How often should standard weight high pressure oxygen cylinders be hydrostatically tested	Every five years
What component of a pressurization system prevents the cabin attitude from becoming higher than the airplane	Negative pressure relief valve
What unit is located immediately downstream of the expansion valve and a Freon refrigeration system	Evaporator coils
What is used in some oxygen systems that change hi cylinder pressure too low system pressure	Pressure reducer valve
The point at which Freon flowing through a vapor cycle cooling system gives off heat and changes from a gas to a liquid is the	Condenser
When charging a vapor cycle cooling system after evacuation the low pressure gauge fails to come out of a vacuum what is indicated	Blockage in the system
Which of the following are characteristics of a chemical or solid-state oxygen system	A volume storage capacity about three times that of a compressed oxygen and system generators that are a nerd below 400°F even under severe impact
The purpose of a dump valve a pressurized aircraft has to relieve	Are positive pressure from the cabin
On some Kevin price rotation system specialization on the ground is restricted by the	Main landing gear operated switch
The function of an expansion valve in a Freon cooling system is to act as a metering device and to	Reduce the pressure of the liquid Freon
To be eligible for recharging a DOT3HT oxygen cylinder must have been how do you say tested every three years and be retired from service after	24 years or 4380 filling cycles
Before a high-pressure oxygen cylinder is serviced it must be correct type and have been	Hydrostatically test placed in the proper time interval
What controls the amount of oxygen delivered to a mask and a continuous flow oxygen system	Calibrated office
Basic air cycle cooling system consist of	source of compressed air heat exchangers and a turbine
Hey contaminated oxygen system is normally purged with	Oxygen
The primary function of the cabin pressurization system outflow valve is to	Maintain desired cabin pressure
Froster ice build up on a vapor cycle coin system evaporator would most likely be caused by	Inadequate airflow through the evaporator
One purpose of a jet pump in a pressurization and air-conditioning system is to	Provide for augmentation of airflow in some areas of the aircraft
The question heater combustion air system what prevents too much air from entering the heaters as an air pressure decreases	Either combustion air leaf Avenue or a differential pressure regulator
What is the purpose of pressurizing the aircraft cabin	To make human flight possible in a hostile environment of the upper atmosphere
Which best describes cabin differential pressure	Difference between the ambient and internal air pressure
And the diluter demand oxygen regulator when does the demand valve operate	When they user breathes
An operating vapor cycle cooling system if the two lines connected to the expansion valve are essentially the same temperature what does this indicate	The expansion valve is not metering properly
Oxygen systems and unpressurized aircraft are generally of the	Continuous flow and pressure demand types
What controls the operation of the cabin pressure regulator	Cabin altitude
In a gaseous oxygen system which of the following are vented to blow out plugs in the fuselage skin	Pressure relief valves
How is the cabin pressure of a pressurized aircraft usually controlled	Buy an automatic outflow Val that dumped all the pressure in excess of the amount for which it is set
When refrigerant – 12 has passed over an open flame it	Changes to phosgene gas
Oxygen used in aircraft systems	Is at least 99.5% pure and is practically water free
The cabin pressure control setting has a direct influence upon the	Outflow valve opening
Which is considered a good practice concerning the inspection of heating and exhaust systems of aircraft utilizing a jacket around the engine exhaust as a heat source	Supplement physical inspections with periodic operational carbon monoxide detection test
What is the condition of the refrigerant as it enters the condenser of a vapor cycle cooling system	High pressure vapor
An aircraft pressurization cycle is normally considered to be	One complete series of events or operations that recur regularly
The cabin pressurization modes of operation are	Differential unpressurized and isobaric
The purpose of a sub core in a vapor cycle cooling system is to	Call the Freon to prevent premature vaporization
For use and unpressurized aircraft which is generally the least complicated and requires the least maintenance	Chemical oxygen generator systems
What unit in a weber cycle cooling system serves as a Reservoir for the refrigerant	Receiver dryer
Which component in an air cycle cooling system does air undergo a pressure and temperature drop	Expansion turbine
Where does the last stage of calling in an air cycle air-conditioning system occur	Expansion turbine
A small amount of water and a vapor so I can cooling system can freeze	And the expansion valve and stop the entire system operation
What is the purpose of a mixing valve in a compressor bleed air air conditioning system	Control the supply of hot cool and cold air
How can I be determined that a vapor cycle cooling system is charged with the proper amount of Freon	Air bubbles in the sight glass disappear
The position of the thermostatic expansion valve in a vapor cycle cooling system is determined by temperature and the pressure of the	Freon in the outlet of the evaporator
And what positions to the bottle be placed when adding liquid Freon to a vapor cycle cooling system	Vertical with the outlet at the bottom
What is the condition of the refrigerator as it leaves the evaporator of a vapor cycle cooling system	Low pressure vapor
What is the main cause of contamination in a gaseous oxygen system	Moisture
The component of determines the pressure level in the cabin is the cabin air pressure	Outflow valve
I’m transport category aircraft what might be an indication of an overpressure event of the aircraft oxygen system	The green thermal expansion disk missing
The air cycle cooling system produces cold air by	Extracting heat energy across an expansion turbine
How is cabin pressure of an aircraft maintained in flight	By controlling the rate of the air flowing out of the cabin
And a high pressure oxygen system if the pressure reducer fails what prevents high-pressure oxygen from entering the system down stream	Pressure relief valve
What type of oil is suitable for use in vapor cycle cooling system	Special high-grade refrigeration oil
How should you determine the amount of oxygen in a portable high pressure cylinder	Read the pressure gauge mounted on the cylinder
If a high pressure oxygen cylinder is to be installed an airplane I must me the specifications of the	Department of transportation
After cleaning replacing the filtering elements in a combustion here fuel system the system should be pressurized and	All connections checked for leaks
Which prevents a sudden loss of specialization in the event that there is a loss of the pressurization source	Delivery air duct check valve
What maybe use as a lubricant on oxygen system tapered pipe thread conductions	Teflon tape
The operation of an aircraft combustion heater is usually controlled by a thermostat circuit which	Alternately turns the fuel on and off a process known as cycling
What is a steady stream of bubbles and the Cait when servicing a vapor cycle air conditioning system	The system is under charged
What test is used to determine the serviceability of an oxygen cylinder	Pressure test with water
The purpose of the airflow metering android assembly found in oxygen diluted the man regulators is to	Really airflow in relation to cabin altitude win and dilute demand position
If the cabin rate of climb is too great the control should be adjusted to cause the	Outflow valve to close faster
The function of the condenser in a Freon cooling system is to	Transfer heat from the Freon gas to ambient air
If a liquid level gauge in a vapor cycle cooling system indicates a low Freon charge the system should	Be operated for a period of time to read a stable condition and then the Freon level rechecked
When a vapor cycle cooling system is not an operation what is an indication that the system is leaking Freon	Oil seepage
Hey pressurization controller uses	Barometric pressure cabin altitude and cabin rate of change
What is the condition of the refrigerant as it enters the evaporator of a vapor cycle cooling system	Low pressure liquid
When purging a Freon air conditioning system is important to release the charge at a slow rate what is a reason for the slow rate discharge	Prevent access loss of refrigerant oil
And a Freon vapor cycle cooling system where is cooling air obtain for the condenser	Ambient air

Created by: Ihaymond