{"id":7358,"date":"2024-04-15T02:43:34","date_gmt":"2024-04-15T02:43:34","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=7358"},"modified":"2024-04-15T02:43:34","modified_gmt":"2024-04-15T02:43:34","slug":"according-to-kennedy-the-critical-velocity-v0-in-meters-in-a-channel-is-the-mean-velocity-which-keeps-the-channel-free-from-silting-or-scouring-its-value-is-given-by-where-m-is-critical-velocity","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/according-to-kennedy-the-critical-velocity-v0-in-meters-in-a-channel-is-the-mean-velocity-which-keeps-the-channel-free-from-silting-or-scouring-its-value-is-given-by-where-m-is-critical-velocity\/","title":{"rendered":"According to Kennedy, the critical velocity (V0) in meters in a channel is the mean velocity which keeps the channel free from silting or scouring. Its value is given by (where m is critical velocity ratio and D is the depth of the channel). A. V0 = 0.84 mD0.64 B. V0 = 0.55 mD0.64 C. V0 = 0.84 mD0.54 D. V0 = 0.55 mD0.54"},"content":{"rendered":"<p>[amp_mcq option1=&#8221;V0 = 0.84 mD0.64&#8243; option2=&#8221;V0 = 0.55 mD0.64&#8243; option3=&#8221;V0 = 0.84 mD0.54&#8243; option4=&#8221;V0 = 0.55 mD0.54&#8243; correct=&#8221;option1&#8243;]<!--more--><\/p>\n<p>The correct answer is: A. V0 = 0.84 mD0.64<\/p>\n<p>The critical velocity is the minimum velocity required to keep a channel free from silting or scouring. It is a function of the channel&#8217;s depth, slope, and sediment characteristics. The Kennedy equation is a widely used empirical equation for estimating the critical velocity. It is given by:<\/p>\n<p>$$V_c = 0.84 \\times m \\times D^{0.64}$$<\/p>\n<p>where:<\/p>\n<ul>\n<li>$V_c$ is the critical velocity in meters per second<\/li>\n<li>$m$ is the critical velocity ratio, which is a dimensionless number that depends on the channel&#8217;s sediment characteristics<\/li>\n<li>$D$ is the depth of the channel in meters<\/li>\n<\/ul>\n<p>The Kennedy equation is based on experimental data for a wide range of channels. It has been shown to be accurate for a variety of sediment types and channel geometries.<\/p>\n<p>Option B is incorrect because it uses a value of $m$ that is too low. The value of $m$ should be between 0.8 and 1.0 for most channels.<\/p>\n<p>Option C is incorrect because it uses a value of $m$ that is too high. The value of $m$ should be between 0.8 and 1.0 for most channels.<\/p>\n<p>Option D is incorrect because it uses the wrong power of $D$. The correct power of $D$ is 0.64.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[amp_mcq option1=&#8221;V0 = 0.84 mD0.64&#8243; option2=&#8221;V0 = 0.55 mD0.64&#8243; option3=&#8221;V0 = 0.84 mD0.54&#8243; option4=&#8221;V0 = 0.55 mD0.54&#8243; correct=&#8221;option1&#8243;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[649],"tags":[],"class_list":["post-7358","post","type-post","status-publish","format-standard","hentry","category-irrigation-engineering","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>According to Kennedy, the critical velocity (V0) in meters in a channel is the mean velocity which keeps the channel free from silting or scouring. Its value is given by (where m is critical velocity ratio and D is the depth of the channel). A. V0 = 0.84 mD0.64 B. V0 = 0.55 mD0.64 C. V0 = 0.84 mD0.54 D. V0 = 0.55 mD0.54<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/according-to-kennedy-the-critical-velocity-v0-in-meters-in-a-channel-is-the-mean-velocity-which-keeps-the-channel-free-from-silting-or-scouring-its-value-is-given-by-where-m-is-critical-velocity\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"According to Kennedy, the critical velocity (V0) in meters in a channel is the mean velocity which keeps the channel free from silting or scouring. Its value is given by (where m is critical velocity ratio and D is the depth of the channel). A. V0 = 0.84 mD0.64 B. V0 = 0.55 mD0.64 C. V0 = 0.84 mD0.54 D. 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Its value is given by (where m is critical velocity ratio and D is the depth of the channel). A. V0 = 0.84 mD0.64 B. V0 = 0.55 mD0.64 C. V0 = 0.84 mD0.54 D. V0 = 0.55 mD0.54","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\/according-to-kennedy-the-critical-velocity-v0-in-meters-in-a-channel-is-the-mean-velocity-which-keeps-the-channel-free-from-silting-or-scouring-its-value-is-given-by-where-m-is-critical-velocity\/","og_locale":"en_US","og_type":"article","og_title":"According to Kennedy, the critical velocity (V0) in meters in a channel is the mean velocity which keeps the channel free from silting or scouring. Its value is given by (where m is critical velocity ratio and D is the depth of the channel). A. V0 = 0.84 mD0.64 B. V0 = 0.55 mD0.64 C. V0 = 0.84 mD0.54 D. V0 = 0.55 mD0.54","og_description":"[amp_mcq option1=&#8221;V0 = 0.84 mD0.64&#8243; option2=&#8221;V0 = 0.55 mD0.64&#8243; option3=&#8221;V0 = 0.84 mD0.54&#8243; option4=&#8221;V0 = 0.55 mD0.54&#8243; correct=&#8221;option1&#8243;]","og_url":"https:\/\/exam.pscnotes.com\/mcq\/according-to-kennedy-the-critical-velocity-v0-in-meters-in-a-channel-is-the-mean-velocity-which-keeps-the-channel-free-from-silting-or-scouring-its-value-is-given-by-where-m-is-critical-velocity\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2024-04-15T02:43:34+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\/according-to-kennedy-the-critical-velocity-v0-in-meters-in-a-channel-is-the-mean-velocity-which-keeps-the-channel-free-from-silting-or-scouring-its-value-is-given-by-where-m-is-critical-velocity\/","url":"https:\/\/exam.pscnotes.com\/mcq\/according-to-kennedy-the-critical-velocity-v0-in-meters-in-a-channel-is-the-mean-velocity-which-keeps-the-channel-free-from-silting-or-scouring-its-value-is-given-by-where-m-is-critical-velocity\/","name":"According to Kennedy, the critical velocity (V0) in meters in a channel is the mean velocity which keeps the channel free from silting or scouring. 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