What is the minimum number of interconnected links required to form a kinematic chain________________________?
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Answer: C. 4 links and 4 turning pairs
Explanation
A kinematic chain requires a minimum of four interconnected links and four turning pairs to form a closed loop. Three links can form a rigid triangular structure, but they cannot provide relative motion without breaking. Four links provide the lowest possible number required to create a flexible, movable closed kinematic chain. Kinematic chains are assemblies of rigid links connected by joints that permit relative motion between them. Grashof criterion relies on link counts and lengths to evaluate whether continuous relative rotation is possible. Each joint in a closed chain must maintain proper physical contact to ensure predictable machine kinematics.
Two links cannot form a closed loop or a functional mechanism capable of relative motion. Three links and four turning pairs is a geometric impossibility for standard kinematic chain construction. Chains with five links and four turning pairs exceed the minimum required configuration for a basic closed loop.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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