The kinematic pair formed by two elements connected such that one is constrained to revolve about a fixed axis of the other is referred to as__________________?
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Answer: A. turning pair
Explanation
A turning pair constrains one kinematic element to revolve around a fixed axis of another. This revolute joint permits only rotational relative motion while preventing linear translation. Pin joints and hinge connections are standard physical examples of turning pairs. Kinematic pairs categorize how machine components connect and move relative to each other. Turning pairs are lower kinematic pairs featuring full surface contact along cylindrical journals. Reuleaux classification system identifies turning pairs as fundamental machine elements.
Linkage mechanisms rely on turning pairs to create rotational motion in machinery. Door hinges and crankshaft journals operate as classic turning pair connections. Machine design ensures turning pairs are adequately lubricated to prevent seizing. Rolling pairs involve rolling contact without sliding, such as ball bearings on tracks. Sliding pairs restrict motion to linear translation along a prismatic guide path. Spherical pairs permit ball-and-socket rotation across three independent angular axes.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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