A load resistor {R} ΩΩ is fed by a parallel combination of two batteries. Battery A has an open circuit voltage of 46 V and an internal resistance of 7 ΩΩ. Battery B has an open circuit voltage of 32 V and internal resistance of 4 ΩΩ. Determine Thevenin's voltage (V) that may be used to determine the power dissipated in the load resistor.​

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)