When the nature of contact between the elements of a pair is such that one element can turn about the other by screw threads, the pair is known as a

When the nature of contact between the elements of a pair is such that

1.	When the nature of contact between the elements of a pair is such that one element can turn about the other by screw threads, the pair is known as a
A.	Screw pair
B.	Spherical pair
C.	Turning pair
D.	Sliding pair
Answer» B. Spherical pair

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When the nature of contact between the elements of a pair is such that one element can turn about the other by screw threads, the pair is known as a

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