Which one of the following is a higher pair?
A)Tooth gearing mechanism
B)Thomoson indicator mechanism
C)Crossby indicator mechanism
D)Double McInnes Indicator mechanism
E)Hart's straight line mechanism

Question

Quizplus · Accepted Answer

Tooth gearing mechanism is considered a higher pair because it involves point or line contact between the mating parts, unlike lower pairs which involve surface contact.

Which One of the Following Is a Higher Pair