Design a dc transmission line that can transmit 256 mw of electricity 112 km with only a 2.0% loss. the wires are to be made of aluminum and the voltage is 680 kv . what should be the minimum transmission line diameter?

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.