{"id":58246,"date":"2024-04-16T01:16:09","date_gmt":"2024-04-16T01:16:09","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=58246"},"modified":"2024-04-16T01:16:09","modified_gmt":"2024-04-16T01:16:09","slug":"a-single-phase-induction-motor-is","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/a-single-phase-induction-motor-is\/","title":{"rendered":"A single-phase induction motor is"},"content":{"rendered":"<p>[amp_mcq option1=&#8221;inherently self-starting with high torque&#8221; option2=&#8221;inherently self-starting with low torque&#8221; option3=&#8221;inherently non-self-starting with low torque&#8221; option4=&#8221;inherently non-self-starting with high torque&#8221; correct=&#8221;option1&#8243;]<!--more--><\/p>\n<p>The correct answer is: A single-phase induction motor is inherently non-self-starting with low torque.<\/p>\n<p>A single-phase induction motor is a type of electric motor that uses a single alternating current (AC) supply to create a rotating magnetic field. The rotating magnetic field induces a current in the rotor, which causes it to rotate.<\/p>\n<p>Single-phase induction motors are not inherently self-starting. This means that they cannot start rotating on their own without some external assistance. The most common way to start a single-phase induction motor is to use a split-phase starter. A split-phase starter uses two windings in the stator to create a rotating magnetic field. The two windings are connected to different phases of the AC supply, which creates a phase difference between them. This phase difference causes the magnetic field to rotate, which starts the motor.<\/p>\n<p>Once the motor is running, the centrifugal switch opens and disconnects the starting winding. The motor then runs on the main winding.<\/p>\n<p>Single-phase induction motors have a low starting torque. This means that they cannot start heavy loads. They are typically used in applications where the load is not too heavy, such as fans, blowers, and compressors.<\/p>\n<p>Here is a brief explanation of each option:<\/p>\n<ul>\n<li>Option A: A single-phase induction motor is inherently self-starting with high torque. This is not true. Single-phase induction motors are not inherently self-starting. They require an external starting aid, such as a split-phase starter.<\/li>\n<li>Option B: A single-phase induction motor is inherently self-starting with low torque. This is also not true. Single-phase induction motors have a low starting torque. They cannot start heavy loads.<\/li>\n<li>Option C: A single-phase induction motor is inherently non-self-starting with low torque. This is true. Single-phase induction motors are not inherently self-starting. They require an external starting aid, such as a split-phase starter.<\/li>\n<li>Option D: A single-phase induction motor is inherently non-self-starting with high torque. This is not true. Single-phase induction motors have a low starting torque. They cannot start heavy loads.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>[amp_mcq option1=&#8221;inherently self-starting with high torque&#8221; option2=&#8221;inherently self-starting with low torque&#8221; option3=&#8221;inherently non-self-starting with low torque&#8221; option4=&#8221;inherently non-self-starting with high torque&#8221; correct=&#8221;option1&#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-58246","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>A single-phase induction motor is<\/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\/a-single-phase-induction-motor-is\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A single-phase induction motor is\" \/>\n<meta property=\"og:description\" content=\"[amp_mcq option1=&#8221;inherently self-starting with high torque&#8221; 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