Civil Services Examination · প্রশ্ন 2
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?
উত্তর দেখান ও ব্যাখ্যা
উত্তর: (D) None
ব্যাখ্যা
None is universally true across all UAV types (fixed-wing UAVs can't hover/vertical land; many use fuel, not just battery).