When the (4 way beeper) switch is moved to the left, the power of engine #1 is ____________, while the power of engine #2 is _____________, and the ______ RPM remains constant.

• A. increased; decreased; rotor
• B. decreased; increased; rotor
• C. increased; increased; rotor
• D. decreased; decreased; rotor

Answer: (A)

This question shows how power is shared between two engines while rotor speed is kept steady. Moving the switch to the left routes more fuel to engine #1 and less to engine #2, so engine #1’s power goes up and engine #2’s power goes down. The rotor RPM stays constant because the system uses a governor or automatic control to maintain rotor speed regardless of how the power is distributed between the engines. If both engines increased or both decreased together, there wouldn’t be the same controlled balance to keep the rotor speed fixed. So the correct description is: engine #1 increases in power, engine #2 decreases in power, and the rotor RPM remains constant.