Loading and performance - FAA Part 107 Drone Quiz

Question 1

Humidity affects density altitude because:

Accepted Answer

Water vapor is lighter than dry air, making moist air less dense and thereby increasing the density altitude.

Answer

Water vapor is heavier than dry air, making moist air more dense and thereby decreasing density altitude.

Answer

Humidity physically coats the propellers with water, adding weight.

Question 2

Why should a remote pilot avoid storing LiPo batteries fully charged for extended periods (e.g., several weeks)?

Accepted Answer

It degrades the battery's chemical structure, leading to swelling (puffing) and reduced lifespan.

Answer

The battery will become too cold.

Answer

The battery will permanently lock and cannot be used again.

Question 3

As altitude increases, what happens to the true airspeed of a fixed-wing sUAS flying at a constant indicated airspeed?

Accepted Answer

True airspeed increases because the air is less dense.

Answer

True airspeed decreases.

Answer

True airspeed remains the same.

Question 4

Can an aircraft stall at any airspeed?

Accepted Answer

Yes, a stall can occur at any airspeed and any flight attitude if the critical angle of attack is exceeded.

Answer

No, an aircraft can only stall at its published stall speed.

Answer

No, an aircraft cannot stall if the throttle is at 100%.

Question 5

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 6

How do you calculate the Center of Gravity (CG) of an aircraft?

Accepted Answer

Divide total moment by total weight.

Answer

Divide total weight by total arm.

Answer

Multiply total weight by total moment.

Question 7

Density altitude is defined as:

Accepted Answer

Pressure altitude corrected for non-standard temperature.

Answer

The height above the standard datum plane.

Answer

The actual height of the aircraft above the ground.

Question 8

How does high density altitude affect the performance of a small UAS?

Accepted Answer

It decreases performance due to reduced propeller efficiency and reduced aerodynamic lift.

Answer

It improves performance because the air is less dense.

Answer

It increases the efficiency of the battery.

Question 9

What happens to the stall speed of an aircraft during a banked turn?

Accepted Answer

The stall speed increases as the bank angle increases.

Answer

The stall speed decreases as the bank angle increases.

Answer

The stall speed remains the same regardless of bank angle.

Question 10

During a 60-degree banked level turn, what is the approximate load factor (G-force) exerted on the aircraft?

Accepted Answer

2.0 Gs.

Answer

1.5 Gs.

Answer

1.0 G.

Exam questions Loading and performance - FAA Part 107 Drone Quiz