Which of the following equations defines the form of risering curve in the riser mechanism?(a) x = a*(y-b) + c(b) x = a/(y+b) + c(c) x = a/(y-b) + c(d) x = a*(y+b) + cThis question was addressed to me during an online interview.My question is based upon Riser Placement topic in portion Cooling and Solidification of Casting-Forming-Welding I

Which of the following equations defines the form of risering curve in

1.	Which of the following equations defines the form of risering curve in the riser mechanism?(a) x = a(y-b) + c(b) x = a/(y+b) + c(c) x = a/(y-b) + c(d) x = a(y+b) + cThis question was addressed to me during an online interview.My question is based upon Riser Placement topic in portion Cooling and Solidification of Casting-Forming-Welding I
Answer» The correct OPTION is (c) x = a/(y-b) + c Easy EXPLANATION: The equation for a risering CURVE in the RISER system is given by: x = a/(y-b) + c, where a is the freezing constant for the molten metal, b is the contraction ratio from liquid phase to the solid phase and c is a constant depending on the DIFFERENT media around the riser and the casting.

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