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You are here: home->pvt_plt->H308->2.3.2.4.6.A.1
3246
What effect does high density altitude, as compared to low density altitude, have on propeller efficiency and why?
| | A) Efficiency is reduced due to the increased force of the propeller in the thinner air. |
| | B) Efficiency is increased due to less friction on the propeller blades. |
| * | C) Efficiency is reduced because the propeller exerts less force at high density altitudes than at low density altitudes. |
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Anonymous says: |
17 Sep 2008 |
The explanation should read: The wording of the question is misleading. As currently stated with the word 'category' being singular, the answer would be [B] because the listed classes are all in one category. If the question were stated "... which are categories of aircraft?" the correct answer would be [A] because these are all separate categories of aircraft.
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