When the two elements of a pair have a surface contact when relative motion takes place and the surface of one element slides over the surface of the other, the pair formed is known as a

A lower pair
B higher pair
C self-closed pair
D force-closed pair

Correct Answer: lower pair

When the two elements of a pair have surface contact when relative motion, takes place and the surface of one element slides over the surface of the other, the pair formed is known as lower pair. It will be seen that sliding pairs, turning pairs and screw pairs form lower pairs.
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Related Questions

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A Select the slides thumbnails in that section, and apply a different color scheme
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When the nature of contact between the elements of a pair is such that it can only slide relative to the other, the pair is known as a
A Screw pair
B Spherical pair
C Turning pair
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Pharmacists recently conducted a study with respect to the reasons their customers purchased eye drops to soothe eye dryness. Dry eyes were more frequently experienced by customers who wore contact lenses than by custorners who did not wear contact lenses. The pharmacists concluded that wearing contact lenses, by itself, can cause contact wearers to have dry eyes.
A An inherited condition can cause both weak eyesight and dry eyes
B Physical exertion causes dry eyes in many people who wear contact lenses.
C Most people who have dry eyes do not wear contact lenses.
D Most people who wear contact lenses do not have dry eyes.
The pair is known as a higher pair, when the relative motion between the elements of a pair is
A turning only
B sliding only
C rolling only
D partly turning and partly sliding
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
If two moving elements have surface contact in motion, such pair is known as
A sliding pair
B rolling pair
C surface pair
D lower pair
The motion between a pair which takes place in __________ is known as incompletely constrained motion.
A One direction only
B Two directions only
C More than one direction
D None of these
Identify the sentence in which the word element (s) refers to 'suitable or favourable environment. (1) There is an element of truth in your story. (2) Water is composed of elements of hydrogen and oxygen. (3) I feel out of my elements in political discussions. (4) Water is a natural element for fish
A (4)
B (3)
C (1) and (2)
D (1)
The two elements of a pair are said to form a _________ when they permit relative motion between them.
A Open pair
B Kinematic pair
C Sliding pair
D None of these
The type of pair formed by two elements which are so connected that one is constrained to turn or revolve about a fixed axis of another element is known as
A turning pair
B rolling pair
C sliding pair
D spherical pair

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