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30 Cards in this Set
- Front
- Back
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In what area of an aircraft would you find a carbon monoxide detector? A - surface combustion heater compartment B - cockpit and/or cabin C - engine and/or nacelle |
B - cockpit and/or cabin |
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What occurs when a visual smoke detector is activated? A - a warning bell within the indicator alarms automatically B - a lamp within the indicator illuminates automatically C - the test lamp illuminates and an alarm is provided automatically |
B - a lamp within the indicator illuminates automatically |
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The types of fire-extinguishing agents for aircraft interior fires are A - water, carbon dioxide, dry chemical, and halogenated hydrocarbons B - water, dry chemical, methyl bromide, and chlorobromomethane C - water, carbon tetrachloride, carbon dioxide, and dry chemical |
A - water, carbon dioxide, dry chemical, and halogenated hydrocarbons |
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When air samples contain carbon monoxide, portable carbon monoxide detectors containing yellow silica gel will turn which color? A - blue B - green C - red |
B - green |
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Smoke detection instruments are classified by their method of A - construction B - maintenance C - detection |
C - detection |
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Smoke detectors which use a measurement of light transmissibility in the air are called A - electromechanical devices B - photoelectrical devices C - visual devices |
B - photoelectrical devices |
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A contaminated carbon monoxide portable test unit would be returned to service by A - heating the indicating element to 300 degrees F to reactivate the chemical B - installing a new indicating element C - evacuating the indicating element with CO2 |
B - installing a new indicating element |
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Which fire-detection measures temperature rise compared to a reference temperature? A - Fenwal continuous loop B - Lindberg continuous element C - thermocouple |
C - thermocouple |
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A carbon dioxide (CO2) hand-held fire extinguisher may be used on an electrical fire if the A - horn is nonmetallic B - handle is insulated C - horn is nonmagnetic |
A - horn is nonmetallic |
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The proper fire-extinguishing agent to use on an aircraft brake fire is A - water B - carbon dioxide C - dry powder chemical |
C - dry powder chemical |
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Smoke in the cargo and/or baggage compartment of an aircraft is commonly detected by which instrument? A - chemical reactor B - photoelectric cell C - sniffer |
B - photoelectric cell |
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Light refraction smoke detectors are activated when the detector A - measures a reduction in the amount of visible or infrared light in the surrounding area B - senses light reflected from smoke particles passing through a chamber C - uses radiation induced ionization to detect the presence of smoke |
B - senses light reflected from smoke particles passing through a chamber |
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Why does Fenwal fire-detection system use sport detectors wired parallel between two separate circuits? A - a control unit is used to isolate the bad system in case of malfunction B - this installation is equal to two systems: a main system and a reserve system C - a short may exist in either circuit without causing a false fire warning |
C - a short may exist in either circuit without causing a false fire warning |
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A fire-extinguishiner containing can be checked to determine its charge by A - attaching a remote pressure gauge B - weighing the container and its contents C - a hydro static test |
B - weighing the container and its contents |
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What is the color code for fire-extinguisher lines? A - brown B - yellow C - red and green |
A - brown |
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The most common cause of false fire warnings in continuous-loop fire-detection systems is A - improper routing or clamping of loops B - moisture C - dents, kinks, or crushed sensor sections |
C - dents, kinks, or crushed sensor sections |
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A thermocouple in a fire-detection system causes the warning system to operate because A - it generates a small current when heated B - heat decreases its electrical resistance C - it expands when heated and forms a ground for the warning system |
A - it generates a small current when heated |
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The thermocouple fire-warning system is activated by a A - certain temperature B - core resistance drop C - rate-of-temperature rise |
C - rate-of-temperature rise |
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When used in fire-detection systems having a single indicator light, thermal switches are wired in A - parallel with each other and in series with the light B - series with each other and the light C - series with each other and parallel with the light |
A - parallel with each other and in series with the light |
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Built-in aircraft fire-extinguishing systems are ordinarily charged with A - carbon dioxide and nitrogen B - halogenated hydrocarbons and nitrogen C - sodium bicarbonate and nitrogen |
B - halogenated hydrocarbons and nitrogen |
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In reference to aircraft fire-extinguishing systems, (1) during removal or installation, the terminals of discharge cartridges should be grounded or shorted (2) before connecting cartridge terminals to the electrical system, the system should be checked with a voltmeter to see that no voltage exists at the terminal connections. Regarding the above statements, A - only No. 2 is true B - both No. 1 and No. 2 are true C - neither No. 1 nor No. 2 is true |
B - both No. 1 and No. 2 are true |
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What method is used to detect the thermal discharge of a built-in fire-extinguisher system? A - a discoloring of the yellow plastic disk in the thermal discharge line B - a rupture of the red plastic disk in the thermal discharge line C - the thermal plug missing from the side of the bottle |
B - a rupture of the red plastic disk in the thermal discharge line |
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The thermal switches of a bimetallic thermal-switch type fire-detection (single-loop) system are heat-sensitive units that complete circuits at a certain temperature. They are connected in A - parallel with each other, and in parallel with the indicator lights B - parallel with each other, but in series with the indicator lights C - series with each other, but in parallel with the indicator lights |
B - parallel with each other, but in series with the indicator lights |
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On a periodic check of fire-extinguishiner containers, the pressure was not between minimum and maximum limits. What procedure should be followed? A - release pressure if above limits B - replace the extinguisher container C - increase pressure if below limits |
B - replace the extinguisher container |
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In some fire-extinguishing systems, evidence that the system has been intentionally discharged is indicated by the absence of a A - red disk on the side of the fuselage B - green disk on the side of the fuselage C - yellow disk on the side of the fuselage |
C - yellow disk on the side of the fuselage |
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If a fire extinguisher cartridge is removed from a discharge valve, it should be A - pressure checked B - used only on the original discharge valve assembly C - replaced with a new cartridge |
B - used only on the original discharge valve assembly |
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Which of the following are fire precautions which must be observed when working on an oxygen system? 1. display "No Smoking" placards 2. provide adequate fire-fighting equipment 3. keep all tools and oxygen servicing equipment free from oil or grease 4. avoid checking aircraft radio or electrical systems A - 1, 3, and 4 B - 1, 2, and 4 C - 1, 2, 3, and 4 |
C - 1, 2, 3, and 4 |
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Which fire-extinguishing agent is considered to be the least toxic? A - carbon dioxide B - bromotrifluoromethane (Halon 1301) C - bromochloromethane (Halon 1011) |
B - bromotrifluoromethane (Halon 1301) |
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Maintenance of fire-detection systems includes the A - repair of damaged sensing elements B - removal of excessive loop or element material C - replacement of damaged sensing elements |
C - replacement of damaged sensing elements |
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A squib, as used in a fire-protection system, is a A - temperature-sensing device B - device for causing the fire-extingushing agent to be released C - probe used for installing frangible disks in extinguisher bottles |
B - device for causing the fire-extingushing agent to be released |
