{"id":52991,"date":"2024-04-15T23:47:29","date_gmt":"2024-04-15T23:47:29","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=52991"},"modified":"2024-04-15T23:47:29","modified_gmt":"2024-04-15T23:47:29","slug":"which-of-the-following-single-phase-induction-motors-is-generally-used-in-time-phonographs","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-single-phase-induction-motors-is-generally-used-in-time-phonographs\/","title":{"rendered":"Which of the following single-phase induction motors is generally used in time phonographs?"},"content":{"rendered":"<p>[amp_mcq option1=&#8221;Resistance start&#8221; option2=&#8221;Capacitor start capacitor run&#8221; option3=&#8221;Shaded pole&#8221; option4=&#8221;Universal&#8221; correct=&#8221;option3&#8243;]<!--more--><\/p>\n<p>The correct answer is: <strong>C. Shaded pole<\/strong><\/p>\n<p>A shaded pole motor is a single-phase induction motor that uses a shading coil to create a rotating magnetic field. The shading coil is a copper winding that is placed around one of the poles of the stator. When current flows through the shading coil, it creates a magnetic field that opposes the main magnetic field. This causes the rotor to start rotating.<\/p>\n<p>Shaded pole motors are simple and inexpensive to manufacture, making them ideal for use in low-power applications such as time phonographs. They are also very reliable and have a long lifespan.<\/p>\n<p>The other options are incorrect because:<\/p>\n<ul>\n<li>A resistance start motor uses a resistor to start the motor. This type of motor is not as efficient as a shaded pole motor.<\/li>\n<li>A capacitor start capacitor run motor uses a capacitor to start the motor and a capacitor to run the motor. This type of motor is more efficient than a resistance start motor, but it is also more expensive.<\/li>\n<li>A universal motor can be used on both single-phase and three-phase power. This type of motor is not as common as a shaded pole motor, and it is not typically used in time phonographs.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>[amp_mcq option1=&#8221;Resistance start&#8221; option2=&#8221;Capacitor start capacitor run&#8221; option3=&#8221;Shaded pole&#8221; option4=&#8221;Universal&#8221; correct=&#8221;option3&#8243;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[968],"tags":[],"class_list":["post-52991","post","type-post","status-publish","format-standard","hentry","category-single-phase-induction-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 of the following single-phase induction motors is generally used in time phonographs?<\/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-of-the-following-single-phase-induction-motors-is-generally-used-in-time-phonographs\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which of the following single-phase induction motors is generally used in time phonographs?\" \/>\n<meta property=\"og:description\" content=\"[amp_mcq option1=&#8221;Resistance start&#8221; 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