{"id":50105,"date":"2024-04-15T23:05:31","date_gmt":"2024-04-15T23:05:31","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=50105"},"modified":"2024-04-15T23:05:31","modified_gmt":"2024-04-15T23:05:31","slug":"in-a-step-down-transformer-there-is-a-change-of-15-a-in-the-load-current-this-results-in-change-of-supply-current-of","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/in-a-step-down-transformer-there-is-a-change-of-15-a-in-the-load-current-this-results-in-change-of-supply-current-of\/","title":{"rendered":"In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of"},"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_6a975881d64d4\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    less than 15 A                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"true\">\r\n                    more than 15 A                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    15 A                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    none of the above                <\/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: <strong>B. more than 15 A<\/strong>.<\/p>\n<p>In a step-down transformer, the output voltage is less than the input voltage, and the output current is greater than the input current. This is because the transformer transfers energy from one circuit to another, and the power in the output circuit must be equal to the power in the input circuit. The power is equal to the product of the voltage and the current, so if the voltage is decreased, the current must increase in order to maintain the same power.<\/p>\n<p>In the case of a 15 A change in the load current, the supply current will change by more than 15 A. This is because the transformer will have to supply more power to the load when the load current increases. The amount of additional power that the transformer must supply is equal to the product of the change in the load current and the output voltage. Therefore, the supply current will increase by more than 15 A.<\/p>\n<p>Here is a more detailed explanation of each option:<\/p>\n<ul>\n<li>Option A: less than 15 A. This is not possible because the transformer must supply more power to the load when the load current increases. The amount of additional power that the transformer must supply is equal to the product of the change in the load current and the output voltage. Therefore, the supply current will increase by more than 15 A.<\/li>\n<li>Option B: more than 15 A. This is the correct answer. The transformer must supply more power to the load when the load current increases. The amount of additional power that the transformer must supply is equal to the product of the change in the load current and the output voltage. Therefore, the supply current will increase by more than 15 A.<\/li>\n<li>Option C: 15 A. This is not possible because the transformer must supply more power to the load when the load current increases. The amount of additional power that the transformer must supply is equal to the product of the change in the load current and the output voltage. Therefore, the supply current will increase by more than 15 A.<\/li>\n<li>Option D: none of the above. This is not possible because the transformer must supply more power to the load when the load current increases. The amount of additional power that the transformer must supply is equal to the product of the change in the load <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 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>   <\/div> current and the output voltage. Therefore, the supply current will increase by more than 15 A.<\/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":[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>In a step-down transformer, there is a change of 15 A in the load current. 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