What mechanical function does a pulley serve in a belt transmission system_______________?
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Answer: C. rolling pair
Explanation
A pulley rolling in a belt transmission system acts as a rolling pair. The friction between the belt and pulley facilitates rolling contact without significant relative sliding. This configuration transmits rotational power smoothly across distance without rigid gear teeth. Belt drives transfer mechanical energy between rotating shafts using flexible tension members. Rolling pairs involve surfaces rolling over one another rather than sliding continuously. Slip can occasionally occur in belt drives if the transmitted torque exceeds friction limits.
Industrial conveyor systems utilize belt and pulley assemblies to transport materials efficiently. Automotive accessory drives use serpentine belts and pulleys to power alternators and water pumps. Agricultural machinery relies on belt transmissions for robust and easily maintainable power transfer. Option A describes a cylindrical pair which involves coaxial rotation and translation. Option B describes a turning pair like a simple hinged pin joint. Option D describes a sliding pair where surfaces move parallel past each other.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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