{"id":2570,"date":"2024-03-05T15:34:24","date_gmt":"2024-03-05T15:34:24","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=2570"},"modified":"2024-03-05T15:34:24","modified_gmt":"2024-03-05T15:34:24","slug":"in-a-bell-coleman-refrigeration-plant-compression-and-expansion-of-air-are-isentropic-if-the-temperature-of-air-entering-and-leaving-the-expander-are-400-k-and-200-k-respectively-then-what-will-be","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/in-a-bell-coleman-refrigeration-plant-compression-and-expansion-of-air-are-isentropic-if-the-temperature-of-air-entering-and-leaving-the-expander-are-400-k-and-200-k-respectively-then-what-will-be\/","title":{"rendered":"In a Bell Coleman Refrigeration plant, compression and expansion of air are isentropic. If  the temperature of air entering and leaving the expander are 400 K and 200 K respectively  then what will be the COP of the plant ?  then what will be the COP of the plant ?"},"content":{"rendered":"<p>[amp_mcq option1=&#8221;0.5&#8243; option2=&#8221;1&#8243; option3=&#8221;1.5&#8243; option4=&#8221;2&#8243; correct=&#8221;option2&#8243;]<!--more--><\/p>\n<p>The correct answer is (b), 1.0.<\/p>\n<p>The coefficient of performance (COP) of a refrigerator is defined as the ratio of the heat removed from the refrigerated space to the work input. In an ideal refrigerator, the COP is given by the following equation:<\/p>\n<p>COP = $\\frac{T_{L}}{T_{H} &#8211; T_{L}}$<\/p>\n<p>where $T_{L}$ is the temperature of the refrigerated space and $T_{H}$ is the temperature of the heat source.<\/p>\n<p>In this case, the temperature of the refrigerated space is 200 K and the temperature of the heat source is 400 K. Therefore, the COP is:<\/p>\n<p>COP = $\\frac{200}{400 &#8211; 200} = 1.0$<\/p>\n<p>The other options are incorrect because they do not take into account the temperature of the refrigerated space and the heat source.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[amp_mcq option1=&#8221;0.5&#8243; option2=&#8221;1&#8243; option3=&#8221;1.5&#8243; option4=&#8221;2&#8243; correct=&#8221;option2&#8243;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[147],"tags":[],"class_list":["post-2570","post","type-post","status-publish","format-standard","hentry","category-thermodynamics","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>In a Bell Coleman Refrigeration plant, compression and expansion of air are isentropic. 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If the temperature of air entering and leaving the expander are 400 K and 200 K respectively then what will be the COP of the plant ? then what will be the COP of the plant ?","og_description":"The coefficient of performance (COP) of a refrigerator is defined as the ratio of the heat removed from the refrigerated space to the work input. 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