Question

what is the role of the split ring in an electric motor

Answer 1

The split ring acts as a communicator in a DC motor with the help of split ring the direction of current through the coil is reversed after every half rotation of coil and thus the direction of current in both the arms rotating the coil remains unchanged and the coil continuous to rotate in the same direction.

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Answer 2

ʀᴏʟᴇ ᴏғ sᴘʟɪᴛ ʀɪɴɢ ɪɴ ᴀɴ ᴇʟᴇᴄᴛʀɪᴄ ᴍᴏᴛᴏʀ

sᴘʟɪᴛ ʀɪɴɢ ɪs ᴜsᴇᴅ ғᴏʀ ʀᴇᴠᴇʀsɪɴɢ ᴛʜᴇ ᴅɪʀᴇᴄᴛɪᴏɴ ᴏғ ᴄᴜʀʀᴇɴᴛ ɪɴ ᴛʜᴇ ᴄᴏɪʟ. ... ᴛʜᴇʀᴇғᴏʀᴇ, ᴀғᴛᴇʀ ᴇᴠᴇʀʏ ʜᴀʟғ ʀᴏᴛᴀᴛɪᴏɴ ᴏғ ᴛʜᴇ ᴄᴏɪʟ ᴛʜᴇ ᴅɪʀᴇᴄᴛɪᴏɴ ᴏғ ᴛʜᴇ ᴄᴏᴜᴘʟᴇ ʀᴏᴛᴀᴛɪɴɢ ᴛʜᴇ ᴄᴏɪʟ ʀᴇᴍᴀɪɴs ᴛʜᴇ sᴀᴍᴇ ᴀɴᴅ ᴛʜᴇ ᴄᴏɪʟ ᴄᴏɴᴛɪɴᴜᴇs ɪᴛs ʀᴏᴛᴀᴛɪᴏɴ ɪɴ ᴛʜᴇ sᴀᴍᴇ ᴅɪʀᴇᴄᴛɪᴏɴ.