The power transmission system is primarily responsible for which function?

• A. Convert electrical energy to mechanical energy
• B. Transmit power from the source to the driven element
• C. Convert linear to rotary motion
• D. Measure torque.

Answer: (B)

Transferring mechanical power from the drive source to the driven element is the central role of a power transmission system. It acts as the bridge that delivers torque and speed from the motor or engine to the part that does the work, using gears, belts, shafts, or pulleys to match the required load conditions. This system can adjust torque and rotational speed to suit the task, while maintaining alignment and handling load variations. It does not create energy (that’s the motor’s job) or convert electrical energy to mechanical energy, nor is its primary purpose to measure torque.