Exam quiz Loading and performance - FAA Part 107 Drone Exam Prep

Question 1

Which of the following is true regarding lithium polymer (LiPo) batteries used in most small UAS?

Accepted Answer

They are highly flammable and can catch fire if punctured, overcharged, or exposed to extreme heat.

Answer

They perform best when stored fully depleted.

Answer

They are immune to temperature extremes.

Question 2

Which of the following conditions results in the highest density altitude?

Accepted Answer

High temperature, high humidity, and low barometric pressure.

Answer

Low temperature, low humidity, and high barometric pressure.

Answer

High temperature, low humidity, and high barometric pressure.

Question 3

If an unmanned aircraft weighs 30 pounds, what approximate weight would the structure be required to support during a 60-degree banked turn while maintaining altitude?

Accepted Answer

60 pounds.

Answer

30 pounds.

Answer

45 pounds.

Question 4

Why does a drone require more power to hover at 10,000 feet MSL than it does at sea level?

Accepted Answer

Because the air is less dense at high altitudes, requiring the propellers to spin faster to generate the same amount of lift.

Answer

Because the force of gravity is significantly stronger at higher altitudes.

Answer

Because the air is colder, which creates more aerodynamic drag.

Question 5

If you add a payload to your drone that shifts the CG beyond the aft limit, what is the most likely aerodynamic consequence?

Accepted Answer

The drone will be tail-heavy and highly unstable, making it difficult or impossible to control.

Answer

The drone will be nose-heavy, causing it to descend rapidly.

Answer

The drone will automatically engage a return-to-home protocol.

Question 6

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 7

If you are flying a multirotor drone and push the pitch stick forward to fly horizontally, how does the drone achieve forward movement?

Accepted Answer

It tilts the lift vector forward, converting some of the vertical lift into forward thrust.

Answer

It slows down the front propellers and reverses the rear propellers.

Answer

It uses wind currents to carry it forward.

Question 8

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 9

When computing weight and balance, the 'datum' is:

Accepted Answer

An imaginary vertical plane or line from which all measurements of arm are taken.

Answer

The exact center of the propeller hub.

Answer

The total weight of the aircraft empty.

Question 10

In weight and balance calculations, 'moment' is defined as:

Accepted Answer

Weight multiplied by the arm.

Answer

Weight divided by the arm.

Answer

The total duration of the flight.

Question 11

You are flying a quadcopter and maneuvering aggressively, causing steep banks and rapid pull-ups. How does this affect the structural integrity of the drone?

Accepted Answer

It increases the load factor, placing higher stress on the airframe and motors.

Answer

It strengthens the frame by testing its flexibility.

Answer

It reduces the load factor because the drone is moving quickly.

Question 12

Which aircraft characteristic is most negatively affected by an increase in density altitude?

Accepted Answer

Climb performance and overall lift generation.

Answer

Maximum speed.

Answer

Radio range.

Question 13

What are the four forces that act on an aircraft in flight?

Accepted Answer

Lift, weight, thrust, and drag.

Answer

Lift, gravity, power, and friction.

Answer

Lift, weight, speed, and drag.

Question 14

Which weather conditions should a remote pilot consider primarily because they severely degrade lithium battery performance?

Accepted Answer

Sub-freezing temperatures.

Answer

High humidity.

Answer

High temperatures.

Question 15

What is the relationship between induced drag and airspeed?

Accepted Answer

Induced drag decreases as airspeed increases.

Answer

Induced drag increases as airspeed increases.

Answer

Induced drag is unaffected by airspeed.

Question 16

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 17

During a preflight inspection, you notice your LiPo battery is slightly swollen or puffy. What should you do?

Accepted Answer

Do not fly with it, safely discharge it, and dispose of it properly, as it poses a severe fire risk.

Answer

Use it for short flights only.

Answer

Compress it gently to flatten it out before flying.

Question 18

How does extreme cold weather affect a lithium polymer (LiPo) battery?

Accepted Answer

It increases internal resistance, resulting in a significant reduction in capacity and shorter flight times.

Answer

It increases the battery's capacity and extends flight time.

Answer

It has no effect on the battery's performance.

Question 19

Before every flight, who is responsible for determining that the sUAS is properly loaded and within its weight and balance limits?

Accepted Answer

The Remote Pilot in Command (PIC).

Answer

The manufacturer.

Answer

The owner of the aircraft.

Question 20

Where should a remote pilot look to find the official weight and balance limits for their specific small UAS?

Accepted Answer

The manufacturer's operating manual or Pilot's Operating Handbook (POH).

Answer

14 CFR Part 107 regulations.

Answer

The FAA DroneZone website.

Question 21

When does an aerodynamic stall occur?

Accepted Answer

When the critical angle of attack is exceeded.

Answer

When the airspeed drops below 10 knots.

Answer

When the engine loses power.

Question 22

What happens when you exceed the maximum takeoff weight (MTOW) specified by the sUAS manufacturer?

Accepted Answer

Structural damage may occur, and flight performance will be severely compromised.

Answer

The drone will fly faster due to increased momentum.

Answer

The FAA will automatically revoke your license.

Question 23

If an unmanned aircraft weighs 45 pounds, what approximate weight would the aircraft structure be required to support during a 45° banked turn while maintaining altitude?

Accepted Answer

63 pounds.

Answer

72 pounds.

Answer

45 pounds.

Question 24

When strapping a new, heavy camera to your drone, how should you position it in relation to the aircraft's Center of Gravity (CG)?

Accepted Answer

As close to the original Center of Gravity as possible to maintain balance.

Answer

As far forward as possible to prevent flipping backward.

Answer

As far aft as possible.

Question 25

Overloading a small UAS will likely result in which of the following?

Accepted Answer

Decreased climb rate, decreased maneuverability, and shorter battery life.

Answer

Increased flight time due to greater momentum.

Answer

Increased maneuverability.

Question 26

The distance an aircraft travels over the ground is affected by the wind. If your drone flies at 30 knots indicated airspeed into a 10-knot headwind, what is the approximate ground speed?

Accepted Answer

20 knots.

Answer

30 knots.

Answer

40 knots.

Question 27

When an aircraft's center of gravity is located forward of the forward CG limit, the aircraft:

Accepted Answer

Will be highly stable, but will require more elevator pressure to raise the nose, decreasing performance.

Answer

Is highly unstable and difficult to control.

Answer

Will stall at a lower airspeed.

Question 28

What is 'load factor' in aviation?

Accepted Answer

The ratio of the total load supported by the aircraft's wings/rotors to the actual weight of the aircraft and its contents.

Answer

The total weight of the aircraft including its payload.

Answer

The amount of drag generated by the payload.

Question 29

What is 'induced drag'?

Accepted Answer

Drag that is inherently created as a byproduct of generating lift.

Answer

Drag caused by the physical shape of the aircraft flying through the air.

Answer

Drag caused by the friction of the air on the drone's skin.

Question 30

Frost on the wings or propellers of a small UAS will:

Accepted Answer

Disrupt the smooth flow of air, reducing lift and increasing drag, potentially preventing takeoff.

Answer

Have no significant aerodynamic effect, though it adds slight weight.

Answer

Increase lift by changing the camber of the airfoil.

Question 31

During a crash, the lithium battery in your UAV is dislodged from its compartment and is found on the ground, 5 feet from the aircraft. You notice a dent in the battery, what should you do?

Accepted Answer

Discard battery regardless of condition.

Answer

Assess the condition of the battery and cautiously proceed, following manufacturer's recommendations.

Answer

Perform a test flight to ensure that all items are working properly.

Question 32

If the Center of Gravity (CG) is too far forward, how does it affect the flight characteristics of an aircraft?

Accepted Answer

It makes the aircraft nose-heavy, requiring more back-pressure or elevator trim to maintain level flight.

Answer

It increases the maximum flight time.

Answer

It decreases the stalling speed.

Question 33

In weight and balance terminology, what is an 'arm'?

Accepted Answer

The horizontal distance in inches from the reference datum line to the center of gravity of an item.

Answer

The structural boom holding the motor.

Answer

The total lifting force of one propeller.

Question 34

What increases the load factor on a fixed wing airplane?

Accepted Answer

Level turn.

Answer

Power off stall.

Answer

Steady state climb.

Question 35

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 36

To ensure that the unmanned aircraft center of gravity (CG) limits are not exceeded, follow the aircraft loading instructions specified in the:

Accepted Answer

Pilot's Operating Handbook or UAS Flight Manual.

Answer

Aeronautical Information Manual (AIM).

Answer

Aircraft Weight and Balance Handbook.

Question 37

What is a recommended practice when flying a small UAS in very cold temperatures?

Accepted Answer

Keep the batteries in a warm environment (like a heated car or inside your jacket) until immediately before the flight.

Answer

Pre-chill the batteries outside to acclimate them to the weather.

Answer

Discharge the battery to 50% before flying to prevent freezing.

Question 38

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 39

The angle of attack is defined as the angle between the chord line of an airfoil and the:

Accepted Answer

Direction of the relative wind.

Answer

Pitch angle of the aircraft.

Answer

Rotor plane of rotation.

Question 40

A resource you can use to find out detailed information about the effects of alcohol and legal and illegal drugs is

Accepted Answer

the PHAK (Pilot's Handbook of Aeronautical Knowledge).

Answer

NOTAMs.

Answer

a Pilot's Operating Handbook.

Question 41

You are flying a fixed-wing drone. If you double the airspeed, what happens to the parasite drag?

Accepted Answer

It quadruples.

Answer

It doubles.

Answer

It remains the same.

Question 42

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 43

When an aircraft is in straight-and-level, unaccelerated flight, which forces are equal?

Accepted Answer

Lift equals weight and thrust equals drag.

Answer

Lift equals drag and thrust equals weight.

Answer

Lift equals thrust and weight equals drag.

Question 44

If the temperature increases from 60°F to 90°F at your flying site, what happens to the density altitude and your drone's performance?

Accepted Answer

Density altitude increases, and drone performance decreases.

Answer

Density altitude decreases, and drone performance increases.

Answer

Density altitude increases, and drone performance increases.

Question 45

If a small UAS does not have a manufacturer's published weight and balance manual, what should the remote PIC do?

Accepted Answer

Develop their own process or use industry best practices to ensure the aircraft is safely loaded and balanced.

Answer

Assume the aircraft can carry any payload as long as it takes off.

Answer

The remote PIC is prohibited from flying the aircraft without a published manual.

Question 46

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 47

The purpose of calculating weight and balance before flight is to ensure:

Accepted Answer

The aircraft remains within its structural and aerodynamic limits for safe control.

Answer

The drone looks aesthetically balanced for photography.

Answer

The payload is heavy enough to resist strong winds.

Question 48

What is the primary consequence of operating a small UAS with the Center of Gravity (CG) too far aft?

Accepted Answer

The aircraft will become less stable at all speeds and recovery from a stall may be impossible.

Answer

The aircraft will experience increased airspeed and stability.

Answer

The aircraft will tend to pitch nose down automatically.

Question 49

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.

Question 50

The term "angle of attack" is defined as the angle between the

Accepted Answer

chord line of the wing and the relative wind.

Answer

airplane's longitudinal axis and that of the air striking the airfoil.

Answer

airplane's centerline and the relative wind.

Question 51

What is the effect on the propeller efficiency of low density altitude?

Accepted Answer

Propeller efficiency is increased.

Answer

There is no effect on propeller efficiency.

Answer

Propeller efficiency is decreased.

Question 52

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 53

Which combination of factors will result in the lowest density altitude (and therefore the best performance)?

Accepted Answer

Low temperature, low elevation, low humidity.

Answer

High temperature, high elevation, high humidity.

Answer

High temperature, low elevation, high humidity.

Question 54

A fixed-wing sUAS is loaded such that the CG is exactly on the aft limit. How will this affect the stall characteristics?

Accepted Answer

The aircraft may stall more easily, and stall recovery will be much more difficult or impossible.

Answer

The stall will occur at a lower speed and recovery will be easier.

Answer

It will have no effect on stall characteristics.

Question 55

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.

Exam simulation Loading and performance - FAA Part 107 Drone Exam Prep

Exam simulation FAA Part 107 Drone Exam Prep Loading and performance 60 questions on 120 minutes

Exam simulation Loading and performance - FAA Part 107 Drone Exam Prep

Exam simulation FAA Part 107 Drone Exam Prep Loading and performance 60 questions on 120 minutes

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