Drones quiz

More questions about Drones

These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.

1. 1 Easy

   Which drone safety system uses sensors to prevent collisions?

   Answer: Obstacle avoidance

   Why: DJI drones do not just stop: by default they plot a path around the obstacle, and the pilot can switch them to brake and hover instead.

2. 2 Medium

   What automated safety feature returns a lost drone to its takeoff coordinates?

   Answer: Return-to-Home

   Why: Return-to-Home ascends to a designated altitude before traveling horizontally to avoid colliding with trees or structures.

3. 3 Hard

   How does hovering very close to the ground affect a drone's required rotor power?

   Answer: Decreases power required

   Why: Reduced rotor blade tip vortices near flat ground improve lift efficiency and lower the energy needed to hover.

4. 4 Easy

   What energy source keeps solar drones flying for days?

   Answer: Sunlight

   Why: Solar drones store excess daylight energy in rechargeable batteries to remain airborne straight through the night.

5. 5 Medium

   How does a quadcopter yaw without tilting its body?

   Answer: Speeding up diagonally opposite rotors

   Why: Increasing the speed of diagonally paired rotors creates unmatched reactive torque that spins the entire frame.

6. 6 Hard

   Why do fixed-wing survey drones fly significantly longer than equivalent multirotor drones?

   Answer: Wings generate passive aerodynamic lift

   Why: Multirotors consume massive power fighting gravity directly, whereas fixed-wing craft rely on forward airspeed to generate lift across their wings.