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UPSC 2025: 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?
(a)Only one
(b)Only two
(c)All the three
(d)None
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Not attemptedCorrect Answer: (d) None
Fixed-wing UAVs cannot perform vertical take-off or landing and cannot hover; they require forward airspeed for lift, so Statements I and II are wrong. Many UAV categories use gasoline, kerosene or hybrid propulsion, not just inexpensive batteries, so Statement III is also wrong. Consequently, none of the three statements is correct.
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What is the correct answer to this UPSC 2025 Science & Technology question?▼
The correct answer is option (d): None. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Defence Technology question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2025, GS Paper 1, as Question 42. It falls under Science & Technology > Defence Technology.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Defence Technology?▼
UPSC has asked 21 questions from Defence Technology (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.