Examples of use of switched-on
1. Voloshin switched on his microphone to interject: "Money isn‘t everything.
2. Then she switched on the radio yesterday morning.
3. But being ill in bed, I switched on the radio; and couldn‘t resist the excitement.
4. Better yet, many of these new Iraqi officers seem switched–on themselves.
5. Currently, all autopilots are manually switched on and off at the discretion of pilots.