FAA Aircraft Performance Test 1

Question 1

What effect does high density altitude, as compared to low density altitude, have on propeller efficiency and why?

Accepted Answer

Efficiency is reduced because the propeller exerts less force at high density altitudes than at low density altitudes.

Answer

Efficiency is increased due to less friction on the propeller blades.

Answer

Efficiency is reduced due to the increased force of the propeller in the thinner air.

Question 2

What is density altitude?

Accepted Answer

The pressure altitude corrected for non-standard temperature.

Answer

The height above the standard datum plane.

Answer

The altitude read directly from the altimeter.

Question 3

If the outside air temperature (OAT) at a given altitude is warmer than standard, the density altitude is

Accepted Answer

higher than pressure altitude.

Answer

equal to pressure altitude.

Answer

lower than pressure altitude.

Question 4

Which combination of atmospheric conditions will reduce aircraft takeoff and climb performance?

Accepted Answer

High temperature, high relative humidity, and high density altitude.

Answer

Low temperature, low relative humidity, and low density altitude.

Answer

High temperature, low relative humidity, and low density altitude.

Question 5

What effect does high density altitude have on aircraft performance?

Accepted Answer

It reduces climb performance.

Answer

It increases engine performance.

Answer

It increases takeoff performance.

Question 6

(Refer to Figure 8.) What is the effect of a temperature increase from 25 to 50 °F on the density altitude if the pressure altitude remains at 5,000 feet?

Accepted Answer

1,650-foot increase.

Answer

1,200-foot increase.

Answer

1,400-foot increase.

Question 7

(Refer to Figure 8.) Determine the pressure altitude with an indicated altitude of 1,380 feet MSL with an altimeter setting of 28.22 at standard temperature.

Accepted Answer

2,991 feet MSL.

Answer

2,913 feet MSL.

Answer

3,010 feet MSL.

Question 8

(Refer to Figure 8.) Determine the density altitude for these conditions:  Altimeter setting.....................29.25 Runway temperature...................+81 °F Airport elevation..............5,250 ft MSL

Accepted Answer

8,500 feet MSL.

Answer

4,600 feet MSL.

Answer

5,877 feet MSL.

Question 9

(Refer to Figure 8.) Determine the pressure altitude at an airport that is 3,563 feet MSL with an altimeter setting of 29.96.

Accepted Answer

3,527 feet MSL.

Answer

3,556 feet MSL.

Answer

3,639 feet MSL.

Question 10

(Refer to Figure 8.) What is the effect of a temperature increase from 35 to 50 °F on the density altitude if the pressure altitude remains at 3,000 feet MSL?

Accepted Answer

1,000-foot increase.

Answer

1,100-foot decrease.

Answer

1,300-foot increase.