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Private Pilot : 2007年 Airman Knowledge Test Question (Written Exam)
(Refer to figure 57.) The gross weight of the balloon is 1,350 pounds and the outside air temperature (OAT) is +51°F. The maximum height would be
A) 5,000 feet.
B) 8,000 feet.
C) 10,000 feet.
All fuel tanks should be fired during preflight to determine
A) the burner pressure and condition of the valves.
B) that the pilot light functions properly on each tank.
C) if there are any leaks in the tank.
Why should propane tanks not be refueled in a closed trailer or truck?
A) Propane vapor is one and one-half times heavier than air and will linger in the floor of the truck or trailer.
B) The propane vapor is odorless and the refuelers may be overcome by the fumes.
C) Propane is very cold and could cause damage to the truck or trailer.
When ample liquid propane is available, propane will vaporize sufficiently to provide proper operation between the temperatures of
A) +30 to +90 °F.
B) -44 to +25 °F.
C) -51 to +20 °F.
The initial temperature at which propane boils is
A) +32 °F.
B) -44 °F.
C) -60 °F.
In hot air balloons, propane is preferred to butane or other hydrocarbons because it
A) is less volatile.
B) is slower to vaporize.
C) has a lower boiling point.
If ample propane is available, within which temperature range will propane vaporize sufficiently to provide enough pressure for burner operation during flight?
A) 0 to 30 °F.
B) 10 to 30 °F.
C) 30 to 90 °F.
The valve located on each tank that indicates when the tank is filled to 80 percent capacity is the
A) main tank valve.
B) vapor-bleed valve.
C) pilot valve.
The valve located on the top of the propane tank which opens automatically when the pressure in the tank exceeds maximum allowable pressure is the
A) pressure relief valve.
B) metering valve.
C) blast valve.
Burner efficiency of a hot air balloon decreases approximately what percent for each 1,000 feet above MSL?
A) 4 percent.
B) 8 percent.
C) 15 percent.
Private Pilot Knowｌedge Test (Private Written Exam) 05/23/2007 : 2008年の問題へ