When the clutch is engaged (pedal up), what occurs?

When the clutch is engaged, meaning the pedal is released, the pressure plate moves towards the flywheel due to the force exerted by the springs. This action tightly clamps the clutch disc between the pressure plate and the flywheel, allowing power from the engine to be transmitted to the transmission and ultimately to the wheels. In this state, the engine and the wheels are connected through the drivetrain, enabling the vehicle to move.

The other scenarios do not represent what happens when the clutch is engaged. For instance, if the pressure plate were to move away from the flywheel, power would not be transmitted, resulting in disengagement. Similarly, when the clutch disc is disengaged, engine power cannot be transferred, which is the opposite of what occurs with the clutch engaged. Finally, the input shaft does not rotate freely; rather, it rotates in unison with the engine because the clutch is fully engaged, ensuring smooth power delivery.