[amp_mcq option1=”slip torque” option2=”pull-out torque” option3=”breaking torque” option4=”synchronising torque” correct=”option2″]<\/p>\n
The correct answer is: B. pull-out torque<\/strong><\/p>\n The pull-out torque is the maximum value of torque that a synchronous motor can develop without losing its synchronism. It is the torque that the motor can develop at a speed slightly above the synchronous speed. If the load torque on the motor exceeds the pull-out torque, the motor will fall out of synchronism and start to run at a speed below the synchronous speed.<\/p>\n Slip torque is the torque that a synchronous motor develops when it is running at a speed below the synchronous speed. It is the torque that is required to overcome the friction and windage losses in the motor.<\/p>\n Breaking torque is the torque that a synchronous motor can develop when it is being braked. It is the torque that is required to stop the motor from rotating.<\/p>\n Synchronising torque is the torque that is required to bring a synchronous motor up to the synchronous speed. It is the torque that is required to overcome the inertia of the motor and the load.<\/p>\n","protected":false},"excerpt":{"rendered":" [amp_mcq option1=”slip torque” option2=”pull-out torque” option3=”breaking torque” option4=”synchronising torque” correct=”option2″]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[965],"tags":[],"class_list":["post-43202","post","type-post","status-publish","format-standard","hentry","category-synchronous-motors","no-featured-image-padding"],"yoast_head":"\n