Answer / rajkumar

generally peolpe say a dry contact means voltage free
contact and a wet contact means with voltge. In some cases
people also points out a mercury switch is a wet contact

Answer / nagarajan audaiyarpatti

Dry contact:it is nothing but without the load voltage
contact in the loop .

Wet contact: it is nothing but with load voltage contact in
the loop.

Answer / biswarup das

Eg. of Dry Contact= push to talk switch of a microphone.

Wet contact= switch on the wall that activates ac
voltage to turn lamp .

The definations are given in the above answers.

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