28) The socket is rated as _____ and having only two terminal holes without earth connection.

29) Which type of outlet accessory is suitable for double insulated appliances having P.V.C. or insulated body ?

30) Two pin sockets should not be used in domestic wiring unless the appliance to be connected is

31) A length of conductor which is having one or more cores insulated from each other is called as

32) Which tool is used to measure the size of the conductor ?