A control circuit has relay contacts that are delayed in changing position when the relay coil is energized. The relay contacts immediately change back to the original position when the coil is de-energized. What typ e of relay does this describe?

A control circuit has relay contacts that are delayed in changing position when the relay coil is energized. The relay contacts immediately change back to the original position when the coil is de-energized. What typ e of relay does this describe?