{"id":7625,"date":"2024-04-15T02:47:56","date_gmt":"2024-04-15T02:47:56","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=7625"},"modified":"2024-04-15T02:47:56","modified_gmt":"2024-04-15T02:47:56","slug":"the-width-of-a-settling-tank-with-2-hour-detention-period-for-treating-sewage-378-cu-m-per-hour-is-a-5-m-b-5-5-m-c-6-5-m-d-7-m","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/the-width-of-a-settling-tank-with-2-hour-detention-period-for-treating-sewage-378-cu-m-per-hour-is-a-5-m-b-5-5-m-c-6-5-m-d-7-m\/","title":{"rendered":"The width of a settling tank with 2 hour detention period for treating sewage 378 cu m per hour, is A. 5 m B. 5.5 m C. 6.5 m D. 7 m"},"content":{"rendered":"<p>[amp_mcq option1=&#8221;5 m&#8221; option2=&#8221;5.5 m&#8221; option3=&#8221;6.5 m&#8221; option4=&#8221;7 m&#8221; correct=&#8221;option1&#8243;]<!--more--><\/p>\n<p>The correct answer is A. 5 m.<\/p>\n<p>The width of a settling tank is calculated using the following formula:<\/p>\n<p>$W = \\frac{Q}{v}$<\/p>\n<p>where:<\/p>\n<ul>\n<li>$W$ is the width of the tank (m)<\/li>\n<li>$Q$ is the flow rate of sewage (m3\/h)<\/li>\n<li>$v$ is the velocity of the sewage (m\/h)<\/li>\n<\/ul>\n<p>The velocity of the sewage is calculated using the following formula:<\/p>\n<p>$v = \\frac{L}{T}$<\/p>\n<p>where:<\/p>\n<ul>\n<li>$v$ is the velocity of the sewage (m\/h)<\/li>\n<li>$L$ is the length of the tank (m)<\/li>\n<li>$T$ is the detention time (h)<\/li>\n<\/ul>\n<p>The detention time is calculated using the following formula:<\/p>\n<p>$T = \\frac{Q}{V}$<\/p>\n<p>where:<\/p>\n<ul>\n<li>$T$ is the detention time (h)<\/li>\n<li>$Q$ is the flow rate of sewage (m3\/h)<\/li>\n<li>$V$ is the volume of the tank (m3)<\/li>\n<\/ul>\n<p>The volume of the tank is calculated using the following formula:<\/p>\n<p>$V = W \\times L \\times H$<\/p>\n<p>where:<\/p>\n<ul>\n<li>$V$ is the volume of the tank (m3)<\/li>\n<li>$W$ is the width of the tank (m)<\/li>\n<li>$L$ is the length of the tank (m)<\/li>\n<li>$H$ is the depth of the tank (m)<\/li>\n<\/ul>\n<p>Given:<\/p>\n<ul>\n<li>$Q = 378 \\text{ m}^3\/\\text{h}$<\/li>\n<li>$T = 2 \\text{ h}$<\/li>\n<li>$L = 10 \\text{ m}$<\/li>\n<li>$H = 3 \\text{ m}$<\/li>\n<\/ul>\n<p>Therefore:<\/p>\n<p>$W = \\frac{Q}{v} = \\frac{378 \\text{ m}^3\/\\text{h}}{\\frac{378 \\text{ m}^3\/\\text{h}}{10 \\text{ m} \\times 3 \\text{ m}}} = 5 \\text{ m}$<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[amp_mcq option1=&#8221;5 m&#8221; option2=&#8221;5.5 m&#8221; option3=&#8221;6.5 m&#8221; option4=&#8221;7 m&#8221; 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":[650],"tags":[],"class_list":["post-7625","post","type-post","status-publish","format-standard","hentry","category-waste-water-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>The width of a settling tank with 2 hour detention period for treating sewage 378 cu m per hour, is A. 5 m B. 5.5 m C. 6.5 m D. 7 m<\/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\/the-width-of-a-settling-tank-with-2-hour-detention-period-for-treating-sewage-378-cu-m-per-hour-is-a-5-m-b-5-5-m-c-6-5-m-d-7-m\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The width of a settling tank with 2 hour detention period for treating sewage 378 cu m per hour, is A. 5 m B. 5.5 m C. 6.5 m D. 7 m\" \/>\n<meta property=\"og:description\" content=\"[amp_mcq option1=&#8221;5 m&#8221; 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