{"id":56692,"date":"2024-04-16T00:49:04","date_gmt":"2024-04-16T00:49:04","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=56692"},"modified":"2024-04-16T00:49:04","modified_gmt":"2024-04-16T00:49:04","slug":"where-d-c-motor-of-h-p-12-or-more-requires-frequent-starting-stopping-reversing-and-speed-control","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/where-d-c-motor-of-h-p-12-or-more-requires-frequent-starting-stopping-reversing-and-speed-control\/","title":{"rendered":"Where D.C. motor of H.P. 12 or more requires frequent starting, stopping, reversing and speed control"},"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_6a97e1e2ea8c5\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    Drum type controller is used                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    Three point starter is used                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    motor of H.P. 12 or more requires frequent starting, stopping, reversing and speed control A. Drum type controller is used B. Three point starter is used C. Four point starter is used                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"true\">\r\n                    All above can be used                <\/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>D. All above can be used.<\/strong><\/p>\n<p>A drum type controller, a three point starter, and a four point starter are all types of controllers that can be used for D.C. motors of H.P. 12 or more that require frequent starting, stopping, reversing, and speed control.<\/p>\n<p>A drum type controller is a type of controller that uses a drum with a series of contacts that are arranged in a specific pattern. The contacts are connected to the motor and to a power source. When the controller is turned on, the contacts close and allow power to flow to the motor. The pattern of the contacts determines the speed of the motor.<\/p>\n<p>A three <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> point starter is a type of controller that has three terminals: a common terminal, a start terminal, and a stop terminal. The common terminal is connected to the power source. The start terminal is connected to the motor. The stop terminal is connected to the controller. When the controller is turned on, power flows from the power source to the common terminal, to the start terminal, to the motor, and back to the power source. When the controller is turned off, power is cut off from the motor.<\/p>\n<p>A four point starter is a type of controller that has four terminals: a common terminal, a start terminal, a stop terminal, and a field terminal. The common terminal is connected to the power source. The start terminal is connected to the motor. The stop terminal is connected to the controller. The field terminal is connected to the field winding of the motor. When the controller is turned on, power flows from the power source to the common terminal, to the start terminal, to the motor, to the <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> field terminal, and back to the power source. When the controller is turned off, power is cut off from the motor and the field winding.<\/p>\n<p>All three types of controllers can be used for D.C. motors of H.P. 12 or more that require frequent starting, stopping, reversing, and speed control. The type of controller that is used will depend on the specific requirements of the application.<\/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":[743],"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>Where D.C. motor of H.P. 12 or more requires frequent starting, stopping, reversing and speed control<\/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\/where-d-c-motor-of-h-p-12-or-more-requires-frequent-starting-stopping-reversing-and-speed-control\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Where D.C. motor of H.P. 12 or more requires frequent starting, stopping, reversing and speed control\" \/>\n<meta property=\"og:description\" content=\"Subscribe on YouTube\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/where-d-c-motor-of-h-p-12-or-more-requires-frequent-starting-stopping-reversing-and-speed-control\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-16T00:49:04+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Where D.C. motor of H.P. 12 or more requires frequent starting, stopping, reversing and speed control","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/where-d-c-motor-of-h-p-12-or-more-requires-frequent-starting-stopping-reversing-and-speed-control\/","og_locale":"en_US","og_type":"article","og_title":"Where D.C. motor of H.P. 12 or more requires frequent starting, stopping, reversing and speed control","og_description":"Subscribe on YouTube","og_url":"https:\/\/exam.pscnotes.com\/mcq\/where-d-c-motor-of-h-p-12-or-more-requires-frequent-starting-stopping-reversing-and-speed-control\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2024-04-16T00:49:04+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/where-d-c-motor-of-h-p-12-or-more-requires-frequent-starting-stopping-reversing-and-speed-control\/","url":"https:\/\/exam.pscnotes.com\/mcq\/where-d-c-motor-of-h-p-12-or-more-requires-frequent-starting-stopping-reversing-and-speed-control\/","name":"Where D.C. motor of H.P. 12 or more requires frequent starting, stopping, reversing and speed control","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2024-04-16T00:49:04+00:00","dateModified":"2024-04-16T00:49:04+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/where-d-c-motor-of-h-p-12-or-more-requires-frequent-starting-stopping-reversing-and-speed-control\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/where-d-c-motor-of-h-p-12-or-more-requires-frequent-starting-stopping-reversing-and-speed-control\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/where-d-c-motor-of-h-p-12-or-more-requires-frequent-starting-stopping-reversing-and-speed-control\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"mcq","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/"},{"@type":"ListItem","position":3,"name":"Electrical engineering","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/electrical-engineering\/"},{"@type":"ListItem","position":4,"name":"D.c. 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