Question

what happens to the rotor system in a helicopter when the pilot raises or lowers the collective control? (5.a.2)
the engine goes to max power or idle
the thrust of the tail rotor increases or decreases
the pitch angle of the rotor blades increase or decrease as a whole unit
the swash plate tilts right or left to alter the pitch of individual rotor blades
variable speed rotors controlled by onboard ______ provide stability and maneuverability for a multi-rotor uas. (5.b.3)
ailerons
cameras
computers
radios
an airplanes rate of turn is ______. (5.c.1)
equal to its airspeed.
inversely proportional to its airspeed.
exactly twice the airspeed.
always greater than its airspeed.

Explanation:

First Question (Helicopter Collective Control)

The collective control in a helicopter adjusts the pitch angle of all rotor blades simultaneously. The engine power isn't directly set to max/idle by collective (eliminates first option). Tail rotor thrust is related to anti - torque and yaw control, not collective (eliminates second). The swash plate tilting right/left is for cyclic control (alters individual blade pitch for movement), not collective (eliminates fourth). So the correct option is about rotor blade pitch angle changing as a whole.

Multi - rotor UAS (Unmanned Aerial Systems) use onboard computers to control variable speed rotors for stability and maneuverability. Ailerons are for fixed - wing aircraft (eliminates first). Cameras are for imaging, not rotor control (eliminates second). Radios are for communication, not rotor control (eliminates fourth).

The rate of turn of an airplane is inversely proportional to its airspeed. As airspeed increases, the rate of turn (how quickly the plane turns) decreases, and vice - versa. It's not equal (first), exactly twice (third), or always greater (fourth) than airspeed.

Answer:

C. The pitch angle of the rotor blades increase or decrease as a whole unit

Second Question (Multi - rotor UAS Variable Speed Rotors)