With reference to Unmanned Aerial Vehicles (UAVs), consider the following statements:
I. All types of UAVs can do vertical landing.
II. All types of UAVs can do automated hovering.
III. All types of UAVs can use battery only as a source of power supply.
How many of the statements given above are correct?

Question

With reference to Unmanned Aerial Vehicles (UAVs), consider the following statements:
I. All types of UAVs can do vertical landing.
II. All types of UAVs can do automated hovering.
III. All types of UAVs can use battery only as a source of power supply.
How many of the statements given above are correct?

Accepted Answer

None

Explanation: The capabilities of Unmanned Aerial Vehicles (UAVs) depend on their design (fixed-wing, multirotor, hybrid, etc.). Therefore, the word "All" makes all three statements incorrect. Statement I is Incorrect: Not all UAVs can perform vertical landing. Fixed-wing UAVs require a runway or launcher/recovery system. Statement II is Incorrect: Not all UAVs can hover. Fixed-wing UAVs must keep moving forward to stay airborne. Statement III is Incorrect: Not all UAVs use battery power only. Many UAVs use fuel engines, hybrid systems, or even solar power. Therefore, none of the statements are correct, making Option D the correct answer. Statement-wise Analysis Statement Status Explanation I. All UAVs can do vertical landing ❌ Incorrect Only VTOL and multirotor UAVs can land vertically. II. All UAVs can do automated hovering ❌ Incorrect Fixed-wing UAVs cannot hover. III. All UAVs use battery only ❌ Incorrect UAVs may use fuel, hybrid, solar, or battery power. Types of UAVs Type Hovering Vertical Take-off/Landing Power Source Fixed-Wing ❌ No ❌ No Fuel, Battery, Hybrid Multirotor ✅ Yes ✅ Yes Mostly Battery VTOL Hybrid ✅ Yes ✅ Yes Battery, Fuel, Hybrid Important Facts Fixed-wing UAVs are preferred for long-range surveillance and mapping. Multirotor drones are ideal for photography, monitoring, and inspection. Hybrid UAVs combine the advantages of fixed-wing and multirotor systems. Modern UAVs can be powered by batteries, internal combustion engines, hydrogen fuel cells, or solar energy.

Detailed Explanation:

Statement-wise Analysis

Types of UAVs

Important Facts

Question 3 of 3 Modern Warfare Technologies

Want 5 important questions every morning?

Statement	Status	Explanation
I. All UAVs can do vertical landing	❌ Incorrect	Only VTOL and multirotor UAVs can land vertically.
II. All UAVs can do automated hovering	❌ Incorrect	Fixed-wing UAVs cannot hover.
III. All UAVs use battery only	❌ Incorrect	UAVs may use fuel, hybrid, solar, or battery power.

Type	Hovering	Vertical Take-off/Landing	Power Source
Fixed-Wing	❌ No	❌ No	Fuel, Battery, Hybrid
Multirotor	✅ Yes	✅ Yes	Mostly Battery
VTOL Hybrid	✅ Yes	✅ Yes	Battery, Fuel, Hybrid