Questões ATP_pag322

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1094. How are haze layers cleared or dispersed?
 A. By convective mixing in cool night air.
 B. By wind or the movement of air.
 C. By evaporation similar to the clearing of fog.
Haze or smoke must be dispersed by movement of air.
Answer (A) is incorrect because convective mixing would be caused by heating during
the day, not by the cool night air. Answer (C) is incorrect because haze must be
dispersed by movement of air, it cannot evaporate in a similar manner to the clearing
of fog.
1095. Which wind-shear condition results in an increase in airspeed?
 A. Increasing tailwind and decreasing headwind.
 B. Increasing tailwind and headwind.
 C. Decreasing tailwind and increasing headwind.
A headwind increasing against the pitot and airframe will result in an airspeed
increase.
Answer (A) is incorrect because when a headwind shears to a tailwind, increasing
tailwind component and decreasing headwind component, the reduction of the ram air
pressure on the pitot tube causes an initial reduction of indicated airspeed. The
reduced head-wind component will also cause a pitch down moment and a decrease
in altitude. Answer (B) is incorrect because when a headwind shears to a tailwind,
increasing tailwind component and decreasing headwind component, the reduction of
the ram air pressure on the pitot tube causes an initial reduction of indicated airspeed.
The reduced head-wind component will also cause a pitch down moment and a
decrease in altitude.
1096. A PROB40 (PROBability) HHhh group in an International Terminal Aerodrome
Forecast (TAF) indicates the probability of
 A. thunderstorms or other precipitation.
 B. precipitation or low visibility.
 C. thunderstorms or high wind.
A PROB40 (PROBability) HHhh group in a TAF indicates the probability of occurrence
of thunderstorms or other precipitation events.
1097. (Refer to Figure 146.) What method was used to obtain the METAR at Tyler (KTYR) at
1753Z?
 A. Automated Surface Observing System (ASOS), having a precipitation discriminator.
 B.
Automatic Meteorological Observing Station (AMOS), with a precipitation
discriminator.
 C. Automated Weather Observing System (AWOS), without a precipitation discriminator.