GATE ME 2014 Set 1 — Question 20

MCQ+1 / -0.33EasyKinematic Pairs, Chains & DOFMechanisms & LinkagesTheory of Machines & Vibrations

Theory of Machines & Vibrations → Mechanisms & Linkages → Kinematic Pairs, Chains & DOF

Last updated 5 September 2026

Question

For the given statements: I. Mating spur gear teeth is an example of higher pair II. A revolute joint is an example of lower pair Indicate the correct answer.

Correct answer (D) Both I and II are true Solution Statement I: Higher pairs are those which have a point or line contact between the two elements. Mating spur gear teeth have line contact, so it is a higher pair. Thus, statement I is true. Statement II: Lower pairs are those which have surface contact between the two elements. A revolute joint (or pin joint) has surface contact, so it is a lower pair. Thus, statement II is true. Since both statements are true, the correct option is (D). Turn this into a strength. Explore AI-powered practice and doubt support with Success Tracker.

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Correct answer (D) Both I and II are true Solution Statement I: Higher pairs are those which have a point or line contact between the two elements. Mating spur gear teeth have line contact, so it is a higher pair. Thus, statement I is true. Statement II: Lower pairs are those which have surface contact between the two elements. A revolute joint (or pin joint) has surface contact, so it is a lower pair. Thus, statement II is true. Since both statements are true, the correct option is (D).

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