Depends on how hard u are choked.

Supersonic flow is produced in a de laval nozzle by constricting the flow in the center in order to increase the velocity. The shape will be hour-glass in nature. The initial mass flow rate and inlet pressure must be sufficient to produce a supersonic choked flow and the discharge pressure must be sufficiently low enough for supersonic flow to occur.

The past participle for "choke" is "choked."

"Choked" is the action verb.

Choked is a verb. It's the past tense of choke.