Given the following information:
A wye-connected generator driving a transmission line with a delta-connected load. The generator is rated at 20 MVA at a phase voltage of 200 K. V. A transmission line with an impedance of 1 + j3 ohms/mile. A load with a rated power is 6 MVA with a power factor of 0.8 lagging and a rated line voltage of 120 KV.
(a) What is the equivalent, per-phase impedance of the load?
(b) How long can the transmission line be and still have the load be at its ratings?

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.