Special Missions Aviation (SMA) Block 1 Practice Test

Which component transmits rotational energy to its respective gearboxes?

Clutches Bearings Drive shafts Transmission fluid

Correct Answer:

Drive shafts

Explanation:

The key idea is identifying the component that physically carries torque from the engine to the gearbox input. Drive shafts are designed to transmit rotational energy between connected parts, delivering power to each gearbox. They are the continuous link that makes the gearbox input rotate with the engine’s output. Clutches control engagement but aren’t the fixed power path to the gearbox. Bearings support rotating parts but don’t transfer torque. Transmission fluid lubricates and cools, not transmit power. Therefore, the drive shaft is the component that transmits rotational energy to its respective gearboxes.

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