Mechanical Engineering - Theory of machines - Discussion

Discussion Forum : Theory of machines - Section 1 (Q.No. 11)
11.
The pair is known as a higher pair, when the relative motion between the elements of a pair is
turning only
sliding only
rolling only
partly turning and partly sliding
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
28 comments Page 1 of 3.

Shyam said:   7 years ago
Whatever @Ajay Tyagi said is correct.

Rolling only means one degree of freedom. But higher pair is a two degree of freedom.
Ex: wheel Rolling on a Surface,
The Correct answer is = D.
(1)

Soumik chakraborty said:   8 years ago
I think C is correct.
(1)

Dashrath kumar said:   9 years ago
When pair is contain line and surface contact then pair is said to be higher pair.

Jagadeesh said:   8 years ago
I agree @Ajay Tyagi.

Akash said:   8 years ago
Answer D is correct:.

Refer to "Relative" mentioned in the question. In pure rolling relative velocity will be zero.

Ranganath said:   8 years ago
C is the correct option as higher pair involves point contact.

Ashutosh said:   8 years ago
D is the correct answer.

If we consider a cam follower (higher pair) under high speed, then the motion between them is partly turning and partly Sliding.

Amirmt said:   8 years ago
D is the correct answer as in the case of gears.

Dhanesh gaur said:   8 years ago
I think the answer is (c).

Because higher pair is where there is line or point contact. If there is partly sliding that means surface contact and where surface contact there will be a lower pair not a higher pair.

Neeraj said:   9 years ago
Agree with the answer Pure rolling - lower pair rolling - Higher pair.


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