{"id":7288,"date":"2024-04-15T02:42:31","date_gmt":"2024-04-15T02:42:31","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=7288"},"modified":"2024-04-15T02:42:31","modified_gmt":"2024-04-15T02:42:31","slug":"select-the-correct-statement-a-the-absolute-roughness-of-a-pipe-de-creases-with-time-b-a-pipe-becomes-smooth-after-using-for-long-time-c-the-friction-factor-decreases-with-time-d-the-absolute-rou","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/select-the-correct-statement-a-the-absolute-roughness-of-a-pipe-de-creases-with-time-b-a-pipe-becomes-smooth-after-using-for-long-time-c-the-friction-factor-decreases-with-time-d-the-absolute-rou\/","title":{"rendered":"Select the correct statement. A. The absolute roughness of a pipe de-creases with time B. A pipe becomes smooth after using for long time C. The friction factor decreases with time D. The absolute roughness increases with time"},"content":{"rendered":"<p>[amp_mcq option1=&#8221;The absolute roughness of a pipe de-creases with time&#8221; option2=&#8221;A pipe becomes smooth after using for long time&#8221; option3=&#8221;The friction factor decreases with time&#8221; option4=&#8221;The absolute roughness increases with time&#8221; correct=&#8221;option4&#8243;]<!--more--><\/p>\n<p>The correct answer is: D. The absolute roughness increases with time.<\/p>\n<p>The absolute roughness of a pipe is a measure of the small irregularities on the surface of the pipe. These irregularities can cause friction between the fluid flowing through the pipe and the pipe wall. As the pipe ages, these irregularities can become larger, which increases the absolute roughness of the pipe. This increase in absolute roughness can lead to an increase in friction and a decrease in the flow rate of the fluid.<\/p>\n<p>Option A is incorrect because the absolute roughness of a pipe does not decrease with time. In fact, it increases with time.<\/p>\n<p>Option B is incorrect because a pipe does not become smooth after using for long time. In fact, the opposite is true. The pipe becomes rougher with time.<\/p>\n<p>Option C is incorrect because the friction factor does not decrease with time. In fact, it increases with time. This is because the increase in absolute roughness causes an increase in friction.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[amp_mcq option1=&#8221;The absolute roughness of a pipe de-creases with time&#8221; option2=&#8221;A pipe becomes smooth after using for long time&#8221; option3=&#8221;The friction factor decreases with time&#8221; option4=&#8221;The absolute roughness increases with time&#8221; correct=&#8221;option4&#8243;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[648],"tags":[],"class_list":["post-7288","post","type-post","status-publish","format-standard","hentry","category-hydraulics-and-fluid-mechanics","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Select the correct statement. 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The absolute roughness increases with time\" \/>\n<meta property=\"og:description\" content=\"[amp_mcq option1=&#8221;The absolute roughness of a pipe de-creases with time&#8221; option2=&#8221;A pipe becomes smooth after using for long time&#8221; option3=&#8221;The friction factor decreases with time&#8221; option4=&#8221;The absolute roughness increases with time&#8221; correct=&#8221;option4&#8243;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/select-the-correct-statement-a-the-absolute-roughness-of-a-pipe-de-creases-with-time-b-a-pipe-becomes-smooth-after-using-for-long-time-c-the-friction-factor-decreases-with-time-d-the-absolute-rou\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-15T02:42:31+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Select the correct statement. A. The absolute roughness of a pipe de-creases with time B. A pipe becomes smooth after using for long time C. The friction factor decreases with time D. The absolute roughness increases with time","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/select-the-correct-statement-a-the-absolute-roughness-of-a-pipe-de-creases-with-time-b-a-pipe-becomes-smooth-after-using-for-long-time-c-the-friction-factor-decreases-with-time-d-the-absolute-rou\/","og_locale":"en_US","og_type":"article","og_title":"Select the correct statement. A. The absolute roughness of a pipe de-creases with time B. A pipe becomes smooth after using for long time C. The friction factor decreases with time D. The absolute roughness increases with time","og_description":"[amp_mcq option1=&#8221;The absolute roughness of a pipe de-creases with time&#8221; option2=&#8221;A pipe becomes smooth after using for long time&#8221; option3=&#8221;The friction factor decreases with time&#8221; option4=&#8221;The absolute roughness increases with time&#8221; correct=&#8221;option4&#8243;]","og_url":"https:\/\/exam.pscnotes.com\/mcq\/select-the-correct-statement-a-the-absolute-roughness-of-a-pipe-de-creases-with-time-b-a-pipe-becomes-smooth-after-using-for-long-time-c-the-friction-factor-decreases-with-time-d-the-absolute-rou\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2024-04-15T02:42:31+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/select-the-correct-statement-a-the-absolute-roughness-of-a-pipe-de-creases-with-time-b-a-pipe-becomes-smooth-after-using-for-long-time-c-the-friction-factor-decreases-with-time-d-the-absolute-rou\/","url":"https:\/\/exam.pscnotes.com\/mcq\/select-the-correct-statement-a-the-absolute-roughness-of-a-pipe-de-creases-with-time-b-a-pipe-becomes-smooth-after-using-for-long-time-c-the-friction-factor-decreases-with-time-d-the-absolute-rou\/","name":"Select the correct statement. 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