Oilers/Plant Tenders (HHC) Civil Service Practice Exam

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What is a primary advantage of a friction clutch over a positive clutch?

Higher torque capability
Less maintenance required
Smoother engagement
Bigger size for durability

The correct answer is: Less maintenance required

The primary advantage of a friction clutch over a positive clutch lies in its ability for smoother engagement. Friction clutches utilize a friction material to grip and transfer power between the input and output shafts. This allows for a gradual increase in engagement, which minimizes shock loads during operation. This smoother engagement is particularly beneficial in applications where sudden torque changes can cause wear and damage to components. While friction clutches do require maintenance related to the wear of the friction material, they generally provide more user-friendly operation by allowing for precise control of engagement and disengagement, which can enhance overall system performance compared to the abrupt engagement of a positive clutch.