[amp_mcq option1=”Damper winding” option2=”Star-delta starter” option3=”Damper winding in conjunction with star-delta starter” option4=”Resistance starter in the armature circuit” correct=”option3″]<\/p>\n
The correct answer is C. Damper winding in conjunction with star-delta starter.<\/p>\n
A synchronous motor is a type of AC motor that runs at a constant speed, regardless of the load. It is used in a variety of applications, including fans, pumps, and compressors.<\/p>\n
To start a synchronous motor, the rotor must be brought up to speed. This is done by using a starter to connect the motor to the power supply. The starter then gradually increases the voltage applied to the motor until it reaches its rated speed.<\/p>\n
There are two main types of starters used to start synchronous motors: star-delta starters and damper winding starters.<\/p>\n
A star-delta starter connects the motor to the power supply in a star configuration. This reduces the voltage applied to the motor, which makes it easier to start. Once the motor is up to speed, the starter switches the motor to a delta configuration. This increases the voltage applied to the motor and allows it to operate at its rated speed.<\/p>\n
A damper winding starter uses a set of windings in the rotor to help the motor start. These windings are connected to a capacitor, which creates a magnetic field that helps to pull the rotor up to speed.<\/p>\n
In some cases, a damper winding starter may be used in conjunction with a star-delta starter. This provides a smoother start for the motor and reduces the stress on the windings.<\/p>\n
Resistance starter in the armature circuit is not a method used to start a synchronous motor.<\/p>\n","protected":false},"excerpt":{"rendered":"
[amp_mcq option1=”Damper winding” option2=”Star-delta starter” option3=”Damper winding in conjunction with star-delta starter” option4=”Resistance starter in the armature circuit” correct=”option3″]<\/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-47342","post","type-post","status-publish","format-standard","hentry","category-synchronous-motors","no-featured-image-padding"],"yoast_head":"\n