A three-phase, 410-kVA, 2300-V alternator has an armature resistance of 0.4 ohm per phase and a synchronous reactance of 1.3 ohm per phase. Determine the no-load line-to-line generated voltage and the voltage regulation at 1) Full-load kVA, 0.82 power factor lagging, and rated voltage. 2) Full-load kVA, 0.73 power factor leading, and rated voltage. 3) Explain why the generator voltage regulation is different for different load power factors.

What difference(s) did you notice using a pneumatic circuit over hydraulic circuit.explain why the pneumatic piston stumbles when it hits an obstacle.

Burgers vector is generally parallel to the dislocation line. a)-true b)-false

A3-mm-thick panel of aluminum alloy (k 177 w/m-k, c 875 j/kg-k and ? = 2770 kg/m) is finished on both sides with an epoxy coating that must be cured at or above t,-150°c for at least 5 min. the production line for the curing operation involves two steps: (1) heating in a large oven with air at ts,0-175°c and a convection coefficient of h, 40 w/m2. k, and (2) cooling in a large chamber with air at 25°c and a con- vection coefficient of he 10 w/m2.k. the heating portion of the process is conducted over a time interval te which exceeds the ime required to reach 150°c by 5 min (h = r + 300 s). the coating has an emissivity of ? = 0.8, and the temperatures of the oven and chamber walls are 175 and 25°c, respectively. if the panel is placed in the oven at an initial temperature of 25°c and removed from the chamber at a safe-to-touch tempera ture of 37°c, what is the total elapsed time for the two-step curing operation?