a) Describe different methods of resistance welding. (12) b) Find the…
Previous year question for Utilization of Electrical Energy.
Question
a) Describe different methods of resistance welding. (12)
b) Find the current per line in a 3 phase arc furnace to melt 5 metric tonne of steel in one hour at an overall efficiency of 50%. If the arc is 115V,. initial temperature 30°C, melting point of steel 1370°C. specific heat of steel 278 J/kg/°C, latent heat of steel is 37000 J/kg. (8)
- Year: 2018
- Subject: Utilization of Electrical Energy