{"id":182080,"date":"2025-01-13T10:02:35","date_gmt":"2025-01-13T10:02:35","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=182080"},"modified":"2025-01-13T10:02:36","modified_gmt":"2025-01-13T10:02:36","slug":"the-pair-is-known-as-a-higher-pair","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/01\/13\/the-pair-is-known-as-a-higher-pair\/","title":{"rendered":"The pair is known as a higher pair"},"content":{"rendered":"\n<p>The pair is known as a higher pair, when the relative motion between the elements of a pair is<\/p>\n\n\n\n<p>A. turning only<br>B. sliding only<br>C. rolling only<br>D. partly turning and partly sliding<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\"><strong>The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n<p>The correct answer is <strong>D. partly turning and partly sliding<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p>In kinematics and mechanics, pairs are classified based on the type of relative motion they allow between their elements. The classification involves two main categories: <strong>lower pairs<\/strong> and <strong>higher pairs<\/strong>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Lower pairs<\/strong>: In a lower pair, the relative motion between the two elements is constrained to a single degree of freedom, typically in the form of <strong>pure sliding<\/strong> or <strong>pure turning<\/strong>. Common examples are sliding pairs (like a piston in a cylinder) and turning pairs (like a wheel on an axle).<\/li>\n\n\n\n<li><strong>Higher pairs<\/strong>: In contrast, <strong>higher pairs<\/strong> allow more complex relative motions between their elements. Specifically, they involve a combination of <strong>turning and sliding<\/strong>. This type of motion is more complex and is usually observed in systems where both translational and rotational movements occur simultaneously.<\/li>\n<\/ul>\n\n\n\n<p>One key example of a higher pair is a <strong>cam and follower<\/strong> mechanism, where the follower moves in a way that combines turning (rotational motion) and sliding (translational motion). The cam&#8217;s surface often causes the follower to move in an oscillating or linear fashion while it simultaneously rotates, making it a higher pair.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Why option D is correct:<\/h3>\n\n\n\n<p>In a higher pair, the relative motion between the parts is <strong>not purely rotational<\/strong> or <strong>purely translational<\/strong>. Instead, it is a combination of both types of motion, meaning the elements involved experience both turning and sliding simultaneously. This complex motion is what distinguishes a higher pair from a lower pair.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Other options:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>A. Turning only<\/strong>: This describes a lower pair, not a higher pair. A turning pair only allows rotation around a fixed axis.<\/li>\n\n\n\n<li><strong>B. Sliding only<\/strong>: This also describes a lower pair, which only allows translational motion along a fixed path.<\/li>\n\n\n\n<li><strong>C. Rolling only<\/strong>: Rolling involves a combination of sliding and turning, but it&#8217;s not the primary characteristic of higher pairs.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>The pair is known as a higher pair, when the relative motion between the elements of a pair is A. turning onlyB. sliding onlyC. rolling onlyD. partly turning and partly sliding The Correct Answer and Explanation is : The correct answer is D. partly turning and partly sliding. Explanation: In kinematics and mechanics, pairs are [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-182080","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/182080","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=182080"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/182080\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=182080"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=182080"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=182080"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}