{"id":48849,"date":"2024-04-15T22:47:16","date_gmt":"2024-04-15T22:47:16","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=48849"},"modified":"2024-04-15T22:47:16","modified_gmt":"2024-04-15T22:47:16","slug":"if-r2-is-the-resistance-of-secondary-winding-of-the-transformer-and-k-is-the-transformation-ratio-then-the-equivalent-secondary-resistance-referred-to-primary-will-be","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/if-r2-is-the-resistance-of-secondary-winding-of-the-transformer-and-k-is-the-transformation-ratio-then-the-equivalent-secondary-resistance-referred-to-primary-will-be\/","title":{"rendered":"If R2 is the resistance of secondary winding of the transformer and K is the transformation ratio then the equivalent secondary resistance referred to primary will be"},"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_6a970d52a2a46\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    $$\frac{{{{\text{R}}_2}}}{{sqrt {\text{K}} }}$$                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    $$\frac{{{{\text{R}}_2}}}{{{{\text{K}}^2}}}$$                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"true\">\r\n                    $$\frac{{{\text{R}}_2^2}}{{{{\text{K}}^2}}}$$                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    $$\frac{{{\text{R}}_2^2}}{{\text{K}}}$$                <\/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: $\\frac{{{\\text{R}}_2^2}}{{{{\\text{K}}^2}}}$<\/p>\n<p>The equivalent secondary resistance referred to primary is the resistance of a resistor that, when connected to the primary winding of the transformer, would dissipate the same power as the actual secondary resistance when connected to the secondary winding.<\/p>\n<p>The transformation ratio is the ratio of the number of turns in the primary winding to the number of turns in the secondary winding.<\/p>\n<p>The equivalent secondary resistance referred to primary is given by:<\/p>\n<p>$$R_{eq} = \\frac{{{R_2}^2}}{{K^2}}$$<\/p>\n<p>where:<\/p>\n<ul>\n<li>$R_{eq}$ is the equivalent <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> secondary resistance referred to primary<\/li>\n<li>$R_2$ is the resistance of the secondary winding<\/li>\n<li>$K$ is the transformation ratio<\/li>\n<\/ul>\n<p>Option A is incorrect because it does not take into account the transformation ratio.<\/p>\n<p>Option B is incorrect because it divides the resistance of the secondary winding by the square of the transformation ratio. This would be the correct answer if the resistance of the secondary winding were in parallel with the resistance of the primary winding. However, in this case, the resistance of the secondary winding is in series with the resistance of the primary winding.<\/p>\n<p>Option C is incorrect because it squares the resistance of the secondary winding. This would be the correct answer if the resistance of the secondary winding were in series with the resistance of the primary winding. However, in this case, the resistance of the secondary winding is in parallel with the resistance of the primary winding.<\/p>\n<p>Option D is incorrect because it divides the resistance of <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> the secondary winding by the transformation ratio. This would be the correct answer if the resistance of the secondary winding were in series with the resistance of the primary winding. However, in this case, the resistance of the secondary winding is in parallel with the resistance of the primary winding.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>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":[960],"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 R2 is the resistance of secondary winding of the transformer and K is the transformation ratio then the equivalent secondary resistance referred to primary will be<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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