A detailed solution with reasoning is demanded... (a) By applying the relevant knowledge, the Total Solidification Times(TST) of three casting

shapes are to be calculated and compared: (1) a sphere with diameter 1⁄4 10 cm, (2) a cylinder with

diameter and length both 1⁄4 10 cm, and (3) a cube with each side1⁄410 cm. The same casting alloy

is used in the three cases. Determine the relative solidification times for each geometry. If the mold

constant 1⁄4 3.5 min/cm2 in Chvorinov’s rule, compute the total solidification time for each casting.

(b) Based on the results of part (a), which geometric element would make the best riser and why?

Present an analysis-based comment on the outcome.

Asimple rankine cycle uses water as the working fluid. the water enters the turbine at 10 mpa and 480c while the condenser operates at 6 kpa. if the turbine has an isentropic efficiency of 80 percent while the pump has an isentropic efficiency of 70 percent determine the thermal efficiency

An external consultant recommends that a plant installs a bank of capacitors for power factor correction. this will reduce the peak electrical demand charges by an average of 93 kw every month. the plant current pays $13 per kw in peak demand charges. the capacitor bank will include 223 kw of fixed capacitors, and 183 of variable capacitors. the fixed capacitors cost $59 per kw, and the variable capacitors will cost $65 per kw. the consultant charges 21% of the equipment costs to install the capacitors. because this project will reduce the demand for the electric utility, they are prepared to provide a one-time rebate of $42 per kw of reduced demand. what is the simple payback period for this project (in years)?

The quality is zero at a)-the saturated vapour state b)-the saturated liquid state c)-the saturated liquid-vapour mixture state d)-none of the states in the other answers