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Fire Fighting


Quiz Questions

1.Which one of the following are the fire fighting phases.
Fire prevention
Rescue
Fire fighting
All of the above
2. The flash point of a liquid is the lowest temperature of the liquid at which it gives off vapor sufficient to cause a flammable mixture with the air near the surface of the liquid or within the vessel used.
True
False
3.A fire point (the lowest temperature at which a substance continues to burn in air) is usually a few degrees above the flash point.
True
False
4.The typical fire triangle consists of fuel, oxygen and heat. When all three are present and are in the proper state and proportion the fire starts. If one of the legs of the triangle is removed the fire stops.
True
False
5.The chemical fire has the tetrahedron of fire (fig 3-2). It has four triangular surfaces that make up a solid pyramid. Each of the triangular surfaces shows an element necessary to continue combustion. Combustion (fire) is a continuous chemical reaction, which changes constantly because of external conditions. Chemical extinguishments agents (potassium and sodium bi carbonate type dry chemical or vaporizing liquid agents) inhibit the chain reaction of a fire by interfering with or cutting off the conditions necessary for combustion. Thus all the three parts of the fire triangle may be present, but the chain reactions are prevented (inhibited) by a chemical extinguishments agent (or agents), which puts out the flame.
True
False
6.Vapors in the process of combustion are the gaseous substance given off by the material that is burning. In burning wood, heat causes the resinous substance in the wood to vaporize. The vapors combine with the oxygen of the air, and the flame from the kindling ignites the combustible vapor-oxygen gas. The heat from the fire heats the wood, which in turn liberates more vapors and thus sustains the fire until the wood is consumed.
True
False
7.Flammable or Explosive limits are when the mixture of the gases and vapors which form the flammable are either to lean or to reach to ignite.
True
False
8.Flammable range is the range of combustible vapor or gas-air mixture between the upper and lower flammable limit is known as the flammable range.
True
False
9.Which methods used below can control a fire.
Cooling or reducing the temperature below the ignition point.
Smothering or reducing the oxygen content within the fire area below the burnable limits. The atmosphere must contain at least 15 percent oxygen in order for a fire to burn
Removing fuel from the vicinity of the fire by valve or switch action, by the application of heavy streams of water, by firebreaks in the case of natural-cover fires, or by manual removal.
All of the above
10.One-story buildings with several rooms or compartment present more hazard than a single compartment structure of the same size. When hot gases rise to the ceiling, the cooler fresh air from adjoining rooms is drawn under doors or through other openings, permitting the fire to burn longer before it begins to smolder. As the hot gases and smoke fill the entire structure, it becomes difficult to find the exact location of the fire, and proper ventilation procedures become increasingly uncertain.
True
False
11.The type of building construction is a factor which determines the time that fire will require to cause the collapse of a structure. This is important in determining whether a building can be safely laddered, and it will also determine whether men should be sent inside the building. Heavy timber construction will hold up under higher temperatures and for a longer time than unprotected steel. Reinforced concrete will withstand more weight of water than ordinary brick-joisted buildings.
True
False
12.Which one of the following conditions must always be taken into consideration when sizing up a fire:
Life hazard involve in the rescue work required if any.
Exposure hazard from both the interior and exterior viewpoint.
Type of building construction (consider the possibilities of collapse)
Content hazard to both the occupants and the firemen
The accessibility of the fire
The type and amount of fire equipment required.
All of the above
13.Fig. 4-73, the fireman’s carry is the hardest method for one man to carry another.
True
False
14.Fig. 4-71, the one-man support carry is the easiest method to for one man to carry some one who is slightly injured.
True
False
15.After the fire has been put out a cause and origin investigation of the fire should be performed
True
False
16.Fig 4-100 shows:
How to cure a headache
How to wrap a fractured jaw
How to avoid bumping your head against ceiling bulkheads when you are in ship.
17.If the circumstances upon arrival give rise to suspicion of arson, fire investigators should be called.
True
False
18.Fire control is defined as "retarding or reducing the rate of burning". Extinguishment on the other hand is the complete elimination of fire.
True
False
19.Flammable materials and fire accelerating materials carried in an aircraft may be a combination of the following:

Gasoline, turbine engine lubricating oil, and jet fuel.

__Oxygen
__Oils
__Hydraulic fluid
__Anti-icing fluid
__Grease
__ Pyrotechnics, ammunition, and other ordnance.

True
False
20.The engines are divided into two groups, the reciprocating engine and the gas turbine engine.
True
False
21.The reciprocating engines are air cooled and constructed on a radial or opposed design. On a radial engine, the cylinders are installed in one or more separate rows around the crankshaft.
True
False
22.The most likely time for a fire to start in a reciprocating engine is during engine starting because of the excessively rich fuel mixture settings. The fire can best be extinguished by the pilot turning off the fuel tank valves, moving the engine mixture control to "idle cutoff", and allowing the engine to run itself out of fuel.
True
False
23.A typical gas turbine engine consists of an air intake, compressor, combustion section, turbine section, exhaust tailpipe, accessory section, and propeller or rotor drive.
True
False
24.Major sources of fire in a gas turbine engine are short circuits in the electrical system or broken fuel and oil lines.
True
False
25.Two hazard might occur from oxygen equipments: Explosion, and released oxygen feeding the fire.
True
False
26.Do not handle oxygen equipment of any kind with greasy or oily rags or hands. Oxygen under pressure, in contact with grease or oil, will cause an explosion or fire.
True
False
27.In a gas turbine engine during starting, if engine does not start, there is a tendency for fuel to drain or be pumped through the engine into the tailpipe or out the manifold drain onto the ground and start a fire.
True
False
28.Should a fire start, it can be extinguished by shooting CO2 or CF3Br through the air intake duct or between the exhaust tailpipe and cowling.
True
False
29.Figure 5-3 is:
A radial engine (radial flow)
An axial flow thrust engine
30.Figure 5-6 is a typical:
Jet engine
Gas turbine engine
Opposed radial engine