25) Which of the following properties has got higher value for aluminium in comparison to that of copper?

26) Galvanised steel wire is usually used as

27) The minimum clearance between 132 kV transmission line and ground is about

28) If a 132 kV line passes over a residential building, the minimum vertical clearance from the roof of the building shall be

29) The colour of the neutral wire of 3-core flexible cable is