1. The operating principle of float-type carburetors is based on the
A. automatic metering of air at the venturi as the aircraft gains altitude.
B. difference in air pressure at the venturi throat and the air inlet.
C. increase in air velocity in the throat of a venturi causing an increase in air pressure.
2. The wind condition that requires maximum caution when avoiding wake turbulence on landing is a
A. light, quartering headwind.
B. light, quartering tailwind.
C. strong headwind.
3. What force makes an airplane turn?
A. The horizontal component of lift.
B. The vertical component of lift.
C. Centrifugal force.
4. As altitude increases, the indicated airspeed at which a given airplane stalls in a particular configuration will
A. decrease as the true airspeed decreases.
B. decrease as the true airspeed increases.
C. remain the same regardless of altitude.
5. Which conditions result in the formation of frost?
A. The temperature of the collecting surface is at or below freezing when small droplets of moisture fall on the surface.
B. The temperature of the collecting surface is at or below the dew point of the adjacent air and the dew point is below freezing.
C. The temperature of the surrounding air is at or below freezing when small droplets of moisture fall on the collecting surface.
6. What types of fog depend on wind in order to exist?
A. Radiation fog and ice fog.
B. Steam fog and ground fog.
C. Advection fog and upslope fog.
7. If the outside air temperature at a given altitude is warmer than standard, the density altitude is
A. equal to pressure altitude.
B. lower than pressure altitude.
C. higher than pressure altitude.
8. When taxiing with strong quartering tailwinds, which aileron positions should be used?
A. Aileron down on the downwind side.
B. Ailerons neutral.
C. Aileron down on the side from which the wind is blowing.
9. A lighted heliport may be identified by a
A. green, yellow, and white rotating beacon.
B. flashing yellow light.
C. blue lighted square landing area.
10. A below-glideslope indication from a tri-color VASI is a
A. red light signal.
B. pink light signal.
C. green light signal
11. When may hazardous wind shear be expected?
A. When stable air crosses a mountain barrier where it tends to flow in layers forming lenticular clouds.
B. In areas of low-level temperature inversion, frontal zones, and clear air turbulence.
C. Following frontal passage when stratocumulus clouds form indicating mechanical mixing.
12. Pilots flying over a national wildlife refuge are requested to fly no lower than
A. 1,200 feet above ground level.
B. 2,000 feet agl.
C. 3,000 feet agl.
13. Which weather conditions should be expected beneath a low-level temperature inversion layer when the relative humidity is high?
A. Smooth air, poor visibility, fog, haze, or low clouds.
B. Light wind shear, poor visibility, haze, and light rain.
C. Turbulent air, poor visibility, fog, low stratus clouds, and showery precipitation.
Answers
1. B. AC 61-23C
2. B. AIM 7-3-6
3. A. AC 61-21A
4. C. AC 61-23C
5. B. AC 00-6A
6. C. AC 00-6A
7. C. AC 61-23C
8. C. AC 61-21A
9. A. AIM 2-1-8
10. A. AIM 2-1-2
11. B. AC 00-6A
12. B. AIM 7-4-6
13. A. AC 00-6A
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