When to use to turn on in Korean
Korean: 틀다[ teul-da ]

When to use it
(틀다) means to make something start working, like a TV, radio, music, a heater, or water. Use it when you turn something on or start playing it. It is common in everyday life at home, at school, in stores, and while traveling.
Example sentences
엄마가 텔레비전을 틀어요.
Mom turns on the TV.
선생님이 교실에서 음악을 틀어요.
The teacher turns on some music in the classroom.
더워서 에어컨을 틀었어요.
I turned on the air conditioner because it was hot.
라디오 좀 틀어 주세요.
Please turn on the radio.
가게에서 노래를 틀어요.
They play music in the store.
호텔 방이 추워서 히터를 틀었어요.
I turned on the heater because the hotel room was cold.