{"id":44469,"date":"2024-04-15T21:44:10","date_gmt":"2024-04-15T21:44:10","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=44469"},"modified":"2024-04-15T21:44:10","modified_gmt":"2024-04-15T21:44:10","slug":"in-repulsion-motor-zero-torque-is-developed-when","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/in-repulsion-motor-zero-torque-is-developed-when\/","title":{"rendered":"In repulsion motor, zero torque is developed when"},"content":{"rendered":"<p>[amp_mcq option1=&#8221;brush axis is 45\u00c2\u00b0 electrical to field axis&#8221; option2=&#8221;brush axis coincides with the field axis&#8221; option3=&#8221;brush axis is 90\u00c2\u00b0 electrical to field axis&#8221; option4=&#8221;both (B) and (C)&#8221; correct=&#8221;option3&#8243;]<!--more--><\/p>\n<p>The correct answer is: C. brush axis is 90\u00c2\u00b0 electrical to field axis.<\/p>\n<p>In a repulsion motor, the stator windings are arranged to produce a rotating magnetic field. The rotor windings are connected to two brushes that ride on slip rings. The brushes can be moved to align the rotor windings with the stator field in different ways. When the brushes are aligned with the stator field, there is no torque produced and the motor stops. When the brushes are at 90\u00c2\u00b0 electrical to the stator field, the maximum torque is produced.<\/p>\n<p>Option A is incorrect because when the brush axis is 45\u00c2\u00b0 electrical to the field axis, there is a small amount of torque produced.<\/p>\n<p>Option B is incorrect because when the brush axis coincides with the field axis, there is no torque produced.<\/p>\n<p>Option D is incorrect because only option C is correct.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[amp_mcq option1=&#8221;brush axis is 45\u00c2\u00b0 electrical to field axis&#8221; option2=&#8221;brush axis coincides with the field axis&#8221; option3=&#8221;brush axis is 90\u00c2\u00b0 electrical to field axis&#8221; option4=&#8221;both (B) and (C)&#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-44469","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>In repulsion motor, zero torque is developed when<\/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\/in-repulsion-motor-zero-torque-is-developed-when\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"In repulsion motor, zero torque is developed when\" \/>\n<meta property=\"og:description\" content=\"[amp_mcq option1=&#8221;brush axis is 45\u00c2\u00b0 electrical to field axis&#8221; 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