6.The heat dissipated by from a surface depends upon its temperature and its characteristics like colour, roughness etc.

7.Which ofthe following materials is used in the manufacture of resistance grids to be used in the starters of large motors ?

8.Hot rolled sheets have ______ value of permeability

9.In induction motors, the length of air gap in kept as small as mechanically possible is order to have

10.Multiple inlet system of air cooling of turbo-alternators can be used for machines of rating upto