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Showing results 141 - 150 of 981 total.
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2.4.1.4.1.A.1
IRA IRH FII FIH AIF HIF IGI IFP
Knowledge Code: I27
What is indicated by the term "embedded thunderstorms''?
*A) Thunderstorms are obscured by massive cloud layers and cannot be seen.
B) Severe thunderstorms are embedded within a squall line.
C) Thunderstorms are predicted to develop in a stable air mass.
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Modified: 7/16/2004 Original Version
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2.4.1.4.2.A.1
IRA IRH FII FIH AIF HIF IGI IFP
Knowledge Code: I43
If squalls are reported at your destination, what wind conditions should you anticipate?
A) Rapid variation in wind direction of at least 20° and changes in speed of at least 10 knots between peaks and lulls.
B) Peak gusts of at least 35 knots for a sustained period of 1 minute or longer.
*C) Sudden increases in windspeed of at least 15 knots to a peak of 20 knots or more, lasting for at least 1 minute.
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Modified: 7/16/2004 Original Version
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2.4.1.4.3.A.1
IRA IRH FII FIH AIF HIF IGI IFP
Knowledge Code: I30
During the life cycle of a thunderstorm, which stage is characterized predominately by downdrafts?
A) Cumulus.
*B) Dissipating.
C) Mature.
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Modified: 7/16/2004 Original Version
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2.4.1.4.4.A.1
IRA IRH FII FIH AIF HIF IGI IFP
Knowledge Code: I30
Which weather phenomenon is always associated with a thunderstorm?
*A) Lightning.
B) Supercooled raindrops.
C) Heavy rain showers.
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Modified: 7/16/2004 Original Version
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2.4.1.4.5.A.1
IRA IRH FII FIH AIF HIF IGI IFP
Knowledge Code: I30
Which thunderstorms generally produce the most severe conditions, such as heavy hail and destructive winds?
A) Warm front.
*B) Squall line.
C) Air mass.
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Modified: 7/16/2004 Original Version
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2.4.1.4.6.A.1
IRA IRH FII FIH AIF HIF IGI IFP
Knowledge Code: I30
Which procedure is recommended if a pilot should unintentionally penetrate embedded thunderstorm activity?
A) Reverse aircraft heading or proceed toward an area of known VFR conditions.
*B) Set power for recommended turbulence penetration airspeed and attempt to maintain a level flight attitude.
C) Reduce airspeed to maneuvering speed and maintain a constant altitude.
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Modified: 7/16/2004 Original Version
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2.4.1.4.7.A.1
IRA IRH FII FIH AIF HIF IGI IFP
Knowledge Code: I30
What is an indication that downdrafts have developed and the thunderstorm cell has entered the mature stage?
*A) Precipitation begins to fall from the cloud base.
B) A gust front forms.
C) The anvil top has completed its development.
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Modified: 7/16/2004 Original Version
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2.4.1.4.8.A.1
IRA IRH FII FIH AIF HIF IGI IFP
Knowledge Code: I30
What are the requirements for the formation of a thunderstorm?
A) A cumulus cloud with sufficient moisture and an inverted lapse rate.
*B) Sufficient moisture, an unstable lapse rate, and a lifting action.
C) A cumulus cloud with sufficient moisture.
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Modified: 7/16/2004 Original Version
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2.4.1.4.9.A.1
IRA IRH FII FIH AIF HIF IGI IFP
Knowledge Code: I28
Fair weather cumulus clouds often indicate
*A) turbulence at and below the cloud level.
B) smooth flying conditions.
C) poor visibility.
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Modified: 7/16/2004 Original Version
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2.4.1.5.0.A.1
IRA IRH FII FIH AIF HIF IGI IFP
Knowledge Code: I28
What is an important characteristic of wind shear?
*A) It is an atmospheric condition that may be associated with a low level temperature inversion, a jet stream, or a frontal zone.
B) The Coriolis phenomenon in both high and low level air masses is the principal generating force.
C) It is an atmospheric condition that is associated exclusively with zones of convergence.
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Modified: 7/16/2004 Original Version
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