Helicopters

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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