{"id":59155,"date":"2024-04-16T01:32:12","date_gmt":"2024-04-16T01:32:12","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=59155"},"modified":"2024-04-16T01:32:12","modified_gmt":"2024-04-16T01:32:12","slug":"in-a-synchronous-motor-damper-windings-are-provided-on","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/in-a-synchronous-motor-damper-windings-are-provided-on\/","title":{"rendered":"In a synchronous motor, damper windings are provided on"},"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_6a96f6f56ba9a\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    stator frame                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    rotor shaft                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"true\">\r\n                    pole faces                <\/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>C. pole faces<\/strong><\/p>\n<p>Damper windings are provided on the pole faces of a synchronous motor to reduce hunting. Hunting is a self-excited oscillation that can occur in a synchronous motor when the load torque is not constant. The damper windings provide a damping torque that opposes the hunting motion and helps to stabilize the motor.<\/p>\n<p>The stator frame is the stationary part of the motor that contains the stator windings. The rotor shaft is the rotating part of the motor that contains the rotor windings. The pole faces are the surfaces of the rotor that are located between the stator poles.<\/p>\n<p>The following is a brief explanation of each option:<\/p>\n<ul>\n<li><strong>A. stator frame<\/strong> The stator frame is the stationary part of the motor that contains the stator windings. The stator windings are responsible for creating the magnetic field that interacts with the rotor windings to produce torque. The stator frame is not directly involved in the hunting motion, so it does not make sense to provide damper windings on the stator frame.<\/li>\n<li><strong>B. rotor shaft<\/strong> The rotor shaft is the rotating part of the motor that contains the rotor windings. The rotor windings are responsible for creating the magnetic field that interacts with the stator windings to produce torque. The rotor shaft is not directly involved in the hunting motion, so it does not make sense to provide damper windings on the rotor shaft.<\/li>\n<li><strong>C. pole faces<\/strong> The pole faces are the surfaces of the rotor that are located between the stator poles. The pole faces are responsible for creating <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     <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>        Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> the magnetic field that interacts with the stator windings to produce torque. The pole faces are directly involved in the hunting motion, so it makes sense to provide damper windings on the pole faces.<\/li>\n<li><strong>D. none of the above<\/strong> None of the other options are directly involved in the hunting motion, so it does not make sense to provide damper windings on any of them.<\/li>\n<\/ul>\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":[965],"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 synchronous motor, damper windings are provided on<\/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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