question

Propeller efficiency is decreased. Density altitude does not affect propeller efficiency. Propeller efficiency is increased.

It increases performance. It has no effect on performance. It decreases performance.

The temperature at which condensation and evaporation are equal. The temperature at which dew will always form. The temperature to which air must be cooled to become saturated.

a cloud with extensive vertical development. a rain cloud. a middle cloud containing ice pellets.

Rain-induced fog. Upslope fog. Steam fog.

rain. fog. frost.

Turbulence and good surface visibility. Turbulence and poor surface visibility. Nimbostratus clouds and good surface visibility.