Red Seal Industrial Mechanic (Millwright) Practice Exam

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What is the purpose of coupling in machinery?

To support heavy loads during operation
To connect two shafts together for power transmission
To reduce vibration in machinery
To provide insulation against electrical currents

The correct answer is: To connect two shafts together for power transmission

The purpose of coupling in machinery is to connect two shafts together for power transmission. Couplings are essential components used in mechanical systems to join two rotating elements, typically shafts, allowing the transfer of power and torque from one to another. They ensure that mechanical energy is transmitted effectively while accommodating any misalignment or movement between the connected shafts. This connection allows machinery to function smoothly and efficiently. Understanding the role of couplings is important for maintaining equipment performance, as they not only support power transmission but also help protect machinery from damage caused by alignment issues or excessive loads.