{"id":5783,"date":"2024-04-15T02:18:44","date_gmt":"2024-04-15T02:18:44","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=5783"},"modified":"2024-04-15T02:18:44","modified_gmt":"2024-04-15T02:18:44","slug":"if-permissible-working-stresses-in-steel-and-concrete-are-respectively-1400-kg-cm2-and-80-kg-cm2-and-modular-ratio-is-18-in-a-beam-reinforced-in-tension-side-and-of-width-30-cm-and-having-effective-d","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/if-permissible-working-stresses-in-steel-and-concrete-are-respectively-1400-kg-cm2-and-80-kg-cm2-and-modular-ratio-is-18-in-a-beam-reinforced-in-tension-side-and-of-width-30-cm-and-having-effective-d\/","title":{"rendered":"If permissible working stresses in steel and concrete are respectively 1400 kg\/cm2 and 80 kg\/cm2 and modular ratio is 18, in a beam reinforced in tension side and of width 30 cm and having effective depth 46 cm, the lever arms of the section, is A. 37 cm B. 38 cm C. 39 cm D. 40 cm"},"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_6a9d316b3b488\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"true\">\r\n                    37 cm                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    38 cm                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    39 cm                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    40 cm                <\/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 A. 37 cm.<\/p>\n<p>The lever arm is the distance from the centroid of the tension reinforcement to the neutral axis of the beam. The neutral axis is the imaginary line in the beam where the stresses are zero. The centroid of the tension reinforcement is the point where the entire area of the tension reinforcement can be considered to be concentrated.<\/p>\n<p>The modular ratio is the ratio of the modulus of elasticity of steel to the modulus of elasticity of concrete. The modulus of elasticity is a measure of how much a material will deform under stress.<\/p>\n<p>The effective depth of the beam is the distance from the top of the beam to the centroid of the tension reinforcement.<\/p>\n<p>The permissible working stresses in steel and concrete are the maximum stresses that can be applied to the steel and concrete without causing failure.<\/p>\n<p>The lever arm can be calculated using the following formula:<\/p>\n<p>Lever arm = \u00e2\u0088\u009a(Modular <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 <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> 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> ratio x Effective depth)<\/p>\n<p>In this case, the modular ratio is 18, the effective depth is 46 cm, and the lever arm is therefore:<\/p>\n<p>Lever arm = \u00e2\u0088\u009a(18 x 46) = 37 cm<\/p>\n<p>The other options are incorrect because they do not take into account the modular ratio, the effective depth, or the permissible working stresses in steel and concrete.<\/p>\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":[640],"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>If permissible working stresses in steel and concrete are respectively 1400 kg\/cm2 and 80 kg\/cm2 and modular ratio is 18, 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