• Create a class hierarchy. • Avoid code duplication. • Make the project extendible. • Use super call in constructors. • Use super call in methods (if necessary). • Use method overriding. • Override the Object class toString method (instead of using a display method). • Be sure to remove all duplication, including the EmployeeList and Driver classes • Be sure to add ALL necessary documentation.

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

Which of the following controllers anticipates the future from the slope of errors over time? a)-proportional b)-on/off c)-integral d)-derivative.

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)