{"id":207256,"date":"2025-04-21T07:32:24","date_gmt":"2025-04-21T07:32:24","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=207256"},"modified":"2025-04-21T07:32:26","modified_gmt":"2025-04-21T07:32:26","slug":"the-camshaft-rotates-_-degrees-during-one-four-stroke-cycle","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/04\/21\/the-camshaft-rotates-_-degrees-during-one-four-stroke-cycle\/","title":{"rendered":"The camshaft rotates _ degrees during one four-stroke cycle"},"content":{"rendered":"\n<p>The camshaft rotates _____ degrees during one four-stroke cycle.<\/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><strong>Correct Answer:<\/strong> The camshaft rotates <strong>180 degrees<\/strong> during one four-stroke cycle.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation (300 words):<\/h3>\n\n\n\n<p>To understand why the camshaft rotates 180 degrees during a four-stroke cycle, we need to look at how a four-stroke internal combustion engine works and the relationship between the crankshaft and the camshaft.<\/p>\n\n\n\n<p>The four strokes of a typical gasoline or diesel engine are:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Intake stroke<\/strong> \u2013 the intake valve opens, and the piston moves down to draw in the air-fuel mixture.<\/li>\n\n\n\n<li><strong>Compression stroke<\/strong> \u2013 the intake valve closes, and the piston moves up to compress the mixture.<\/li>\n\n\n\n<li><strong>Power stroke<\/strong> \u2013 the spark plug ignites the mixture, forcing the piston down.<\/li>\n\n\n\n<li><strong>Exhaust stroke<\/strong> \u2013 the exhaust valve opens, and the piston moves up again to expel the exhaust gases.<\/li>\n<\/ol>\n\n\n\n<p>These four strokes occur over <strong>two complete revolutions<\/strong> (720 degrees) of the <strong>crankshaft<\/strong>. This is because each stroke requires half a crankshaft revolution, and four strokes equal two full turns of the crankshaft.<\/p>\n\n\n\n<p>The <strong>camshaft<\/strong> is responsible for opening and closing the intake and exhaust valves at the correct times. Since each cylinder only needs the valves to open and close once every two revolutions of the crankshaft (i.e., every 720 degrees), the camshaft must rotate at <strong>half the speed<\/strong> of the crankshaft.<\/p>\n\n\n\n<p>Therefore, during one complete four-stroke cycle (720\u00b0 crankshaft rotation), the <strong>camshaft rotates only 360 degrees<\/strong>.<\/p>\n\n\n\n<p>However, the question asks how much the <strong>camshaft rotates during one revolution of the crankshaft<\/strong>, which is <strong>half<\/strong> of a four-stroke cycle. Since the camshaft turns at <strong>half the speed<\/strong> of the crankshaft, then for one 360\u00b0 revolution of the crankshaft, the camshaft rotates <strong>180 degrees<\/strong>.<\/p>\n\n\n\n<p><strong>In summary:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1 four-stroke cycle = 720\u00b0 crankshaft rotation<\/li>\n\n\n\n<li>Camshaft rotates at half the speed = 360\u00b0 per cycle<\/li>\n\n\n\n<li>Therefore, during 1 crankshaft revolution (360\u00b0), camshaft = <strong>180\u00b0<\/strong> rotation.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/04\/image-196.png\" alt=\"\" class=\"wp-image-207257\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>The camshaft rotates _____ degrees during one four-stroke cycle. The correct answer and explanation is : Correct Answer: The camshaft rotates 180 degrees during one four-stroke cycle. Explanation (300 words): To understand why the camshaft rotates 180 degrees during a four-stroke cycle, we need to look at how a four-stroke internal combustion engine works and [&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-207256","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/207256","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=207256"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/207256\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=207256"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=207256"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=207256"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}