{"id":49650,"date":"2024-04-15T22:58:52","date_gmt":"2024-04-15T22:58:52","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=49650"},"modified":"2024-04-15T22:58:52","modified_gmt":"2024-04-15T22:58:52","slug":"which-motor-has-the-poorest-speed-control","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-motor-has-the-poorest-speed-control\/","title":{"rendered":"Which motor has the poorest speed control?"},"content":{"rendered":"<p>[amp_mcq option1=&#8221;Differentially compounded motor&#8221; option2=&#8221;Cumulatively compounded motor&#8221; option3=&#8221;Shunt motor&#8221; option4=&#8221;Series motor&#8221; correct=&#8221;option4&#8243;]<!--more--><\/p>\n<p>The correct answer is: <strong>Series motor<\/strong>.<\/p>\n<p>A series motor has the poorest speed control because the field winding and the armature winding are connected in series. This means that the current through both windings is the same, and the speed of the motor is proportional to the current. As the load on the motor increases, the current increases, and the speed of the motor decreases. This makes it difficult to control the speed of a series motor.<\/p>\n<p>A differentially compounded motor has the field winding connected in series with the armature winding, and a second field winding connected in parallel with the armature winding. The second field winding has a smaller number of turns than the first field winding, so its effect on the speed of the motor is small. This type of motor has better speed control than a series motor, but not as good as a shunt motor or a cumulatively compounded motor.<\/p>\n<p>A cumulatively compounded motor has the field winding connected in series with the armature winding, and a second field winding connected in parallel with the armature winding. The second field winding has the same number of turns as the first field winding, so its effect on the speed of the motor is equal to the effect of the first field winding. This type of motor has the best speed control of the three types of compound motors.<\/p>\n<p>A shunt motor has the field winding connected in parallel with the armature winding. This means that the current through the field winding is independent of the current through the armature winding. The speed of a shunt motor is determined by the voltage applied to the motor and the resistance of the field winding. The speed of a shunt motor is relatively constant, regardless of the load on the motor.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[amp_mcq option1=&#8221;Differentially compounded motor&#8221; option2=&#8221;Cumulatively compounded motor&#8221; option3=&#8221;Shunt motor&#8221; option4=&#8221;Series motor&#8221; correct=&#8221;option4&#8243;]<\/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":[],"class_list":["post-49650","post","type-post","status-publish","format-standard","hentry","category-d-c-motors","no-featured-image-padding"],"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>Which motor has the poorest 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\/which-motor-has-the-poorest-speed-control\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which motor has the poorest speed control?\" \/>\n<meta property=\"og:description\" content=\"[amp_mcq option1=&#8221;Differentially compounded motor&#8221; option2=&#8221;Cumulatively compounded motor&#8221; option3=&#8221;Shunt motor&#8221; option4=&#8221;Series motor&#8221; correct=&#8221;option4&#8243;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-motor-has-the-poorest-speed-control\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-15T22:58:52+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":"Which motor has the poorest 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\/which-motor-has-the-poorest-speed-control\/","og_locale":"en_US","og_type":"article","og_title":"Which motor has the poorest speed control?","og_description":"[amp_mcq option1=&#8221;Differentially compounded motor&#8221; option2=&#8221;Cumulatively compounded motor&#8221; option3=&#8221;Shunt motor&#8221; option4=&#8221;Series motor&#8221; correct=&#8221;option4&#8243;]","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-motor-has-the-poorest-speed-control\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2024-04-15T22:58:52+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\/which-motor-has-the-poorest-speed-control\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-motor-has-the-poorest-speed-control\/","name":"Which motor has the poorest speed control?","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2024-04-15T22:58:52+00:00","dateModified":"2024-04-15T22:58:52+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/which-motor-has-the-poorest-speed-control\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/which-motor-has-the-poorest-speed-control\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-motor-has-the-poorest-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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