MOST ASKED MCQ ON UTILISATION OF ELECTRICAL ENERGY (Part-1)
1. In electrical resistance welding, material of electrode should havea)higher electrical conductivitiesb) higher thermal conductivitiesc) sufficient strength to sustain high pressure at elevated temperaturesd) all of the above Ans: d 2. Induction heating takes place ina)conducting and magnetic materialsb)insulating materialsc)conducting materials which may be either magnetic or non-magentic materialsd) conducting but non-magnetic materials Ans: c … Read more