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
Discussion:
28 comments Page 2 of 3.
Ajay tyagi said:
9 years ago
D is right. Because in c option, pure rolling is mentioned. Pure rolling means one degree if freedom. i.e Lower pair and partly rolling nd sliding i.e. two degrees of freedom i.e.higher pair. Point or line contact in hp is a general criterion.
Ayub said:
9 years ago
When the two elements of a pair have a line or point contact when relative motion takes place and the motion between the two elements is partly turning and partly sliding, then the pair is known as higher pair. A pair of friction discs, toothed gearing, belt and rope drives, ball and roller bearings and cam and follower are the examples of higher pairs.
Sharad said:
9 years ago
C and D are correct answers because rolling pair is a higher pair. For meshing gear partially sliding and turning.
Amit pundir said:
9 years ago
The correct answer should be option C.
Kodumuri vijay kumar said:
1 decade ago
I think answer is C. Point or line contact between elements of pair is higher pair. Here rolling is point contact which is higher pair.
Devidas said:
10 years ago
How one higher pair is split into the two lower pair with one additional link?
SURESH KUMAR SAHOO said:
10 years ago
Go through the theory of machine if you have studied. Answer as given is correct. And it is obvious that a higher pair to have partial turning and partial sliding action.
Chinmay Amalnerkar said:
10 years ago
Answer C is correct because higher pairs have point contact for example gears and lower pair have surface contact option d not satisfying the above case.
Varsharani said:
1 decade ago
Answer is C, because for higher pair there is always line contact or point contact.
Vineet khandelwal said:
1 decade ago
The answer should be definitely C. No doubt only the rolling motion is having higher pairs.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers