Helicopters

1. Who is credited with inventing the first successful helicopter?

A) Igor Sikorsky
B) Elon Musk
C) Wilbur Wright
D) Leonardo da Vinci

2. Which part of a helicopter creates lift and allows it to fly?

A) Rotor blades
B) Fuselage
C) Engine
D) Tail rotor

3. What is the name of the device that controls the pitch of a helicopter's rotor blades?

A) Swashplate
B) Rudder
C) Accelerator
D) Battery

4. What is the use of a helicopter's skids or landing gear?

A) To support the helicopter on the ground
B) To generate lift
C) To steer the helicopter
D) To control altitude

5. What is the design advantage of a coaxial rotor system on a helicopter?

A) Improved maneuverability and efficiency
B) Quieter operation
C) Higher top speed
D) Larger cargo capacity

6. What is the purpose of the transmission system in a helicopter?

A) To control altitude
B) To transfer power from the engine to the rotor system
C) To provide air conditioning
D) To navigate using GPS

7. What do the collective and cyclic controls in a helicopter control?

A) Collective: engine power, cyclic: altitude
B) Collective: communication, cyclic: speed
C) Collective: controls overall lift, cyclic: controls tilt and direction
D) Collective: landing gear, cyclic: stability

8. Which country has the largest military helicopter fleet in the world?

A) United States
B) Russia
C) China
D) India

9. What instrument is used to measure the altitude of a helicopter above sea level?

A) Speedometer
B) Fuel gauge
C) Compass
D) Altimeter

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