1) what creates magnetic fields?
2) what assumptions did we make regarding the flux linkage between the primary and secondary?
3) suppose that, instead of 120v ac, home power was delivered using 12v or 12kv. what would be the pros/ cons of each?

Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa.s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)