Magnetic field and transformer
· 1. The electromagnet of Figure has reluctance given by R(x) = 7 x 108(0.002 + x)
H1, where x is the length of the variable gap in meters. The coil has 980 turns and
302 resistance. For an applied voltage of 120 VDC, find:
a. The energy stored in the magnetic field for fr= 0.005 m.
b. The magnetic force for x = 0.005 m.

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.

Items are similar to the free issue items, but their access is limited. (clo5) a)-bin stock items free issue b)-bin stock controlled issue c)-critical or insurance spares d)-rebuildable spares e)-consumables

Brief discuss how the presence of dislocations in crystal structures can be an advantage and a disadvantage to engineer and designers.