{"id":5968,"date":"2024-04-15T02:21:50","date_gmt":"2024-04-15T02:21:50","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=5968"},"modified":"2024-04-15T02:21:50","modified_gmt":"2024-04-15T02:21:50","slug":"in-prestressed-concrete-a-forces-of-tension-and-compression-change-but-lever-arm-remains-unchanged-b-forces-of-tension-and-compression-remains-unchanged-but-lever-arm-changes-with-the-moment-c-both","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/in-prestressed-concrete-a-forces-of-tension-and-compression-change-but-lever-arm-remains-unchanged-b-forces-of-tension-and-compression-remains-unchanged-but-lever-arm-changes-with-the-moment-c-both\/","title":{"rendered":"In prestressed concrete A. Forces of tension and compression change but lever arm remains unchanged B. Forces of tension and compression remains unchanged but lever arm changes with the moment C. Both forces of tension and compression as well as lever arm changes D. Both forces of tension and compression as well as lever arm remains unchanged"},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6a990d863ec11\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    Forces of tension and compression change but lever arm remains unchanged                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    Forces of tension and compression remains unchanged but lever arm changes with the moment                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"true\">\r\n                    Both forces of tension and compression as well as lever arm changes                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    Both forces of tension and compression as well as lever arm remains unchanged                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is: C. Both forces of tension <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> and compression as well as lever arm changes.<\/p>\n<p>In prestressed concrete, high-strength steel cables are used to prestress the concrete. This means <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div> that the cables are tensioned before the concrete is poured, and the tension in the cables creates a compressive force in the concrete. This compressive force helps to resist the tensile forces that are created when the concrete is loaded.<\/p>\n<p>The forces of tension and compression in prestressed concrete are not constant. The tension in the cables decreases over time due to relaxation, and the compressive force in the concrete decreases due to creep. The lever arm also changes over time due to creep and shrinkage.<\/p>\n<p>The following is a brief explanation of each option:<\/p>\n<ul>\n<li>Option A: Forces of tension and compression change but lever arm remains unchanged. This is not correct because the lever arm also changes over time due to creep and shrinkage.<\/li>\n<li>Option B: Forces of tension and compression remains unchanged but lever arm changes with the moment. This is not correct because the forces of tension and compression are not constant.<\/li>\n<li>Option C: Both forces of tension and compression as well as lever arm changes. This is the correct answer because the forces of tension and compression are not constant, and the lever arm also changes over time due to creep and shrinkage.<\/li>\n<li>Option D: Both forces of tension and compression as well as lever arm remains unchanged. This is not correct because the forces of tension and compression are not constant, and the lever arm also changes over time due to creep and shrinkage.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Join Our Telegram Channel Subscribe on YouTube<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[641],"tags":[],"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 prestressed concrete A. Forces of tension and compression change but lever arm remains unchanged B. Forces of tension and compression remains unchanged but lever arm changes with the moment C. Both forces of tension and compression as well as lever arm changes D. Both forces of tension and compression as well as lever arm remains unchanged<\/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\/in-prestressed-concrete-a-forces-of-tension-and-compression-change-but-lever-arm-remains-unchanged-b-forces-of-tension-and-compression-remains-unchanged-but-lever-arm-changes-with-the-moment-c-both\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"In prestressed concrete A. Forces of tension and compression change but lever arm remains unchanged B. Forces of tension and compression remains unchanged but lever arm changes with the moment C. 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