What happens when the 4 way beeper switch is depressed in the left?

What happens when the 4 way beeper switch is depressed in the left?

• A. Engine 1 power increased, Engine 2 power decrease, NR stays constant
• B. Engine 1 power decreased, Engine 2 power increased, NR stays constant
• C. NR stays constant, Engine 1 power unchanged, Engine 2 power unchanged
• D. Engine 1 power increases, Engine 2 power increases, NR decreases

Answer: (A)

This item tests how the dual-engine balance is managed to keep rotor speed (NR) constant. The 4-way beeper switch acts as a trim control that redistributes power between the two engines without letting the rotor speed drift. When the left side is pressed, power is increased to Engine 1 and decreased to Engine 2. The control system then maintains NR at its set value, so NR stays constant while the engines end up with opposite changes in power.

This item tests how the dual-engine balance is managed to keep rotor speed (NR) constant. The 4-way beeper switch acts as a trim control that redistributes power between the two engines without letting the rotor speed drift. When the left side is pressed, power is increased to Engine 1 and decreased to Engine 2. The control system then maintains NR at its set value, so NR stays constant while the engines end up with opposite changes in power.