GATE ME 2007 | Casting Question 29 | Production Engineering

GATE ME 2007

MCQ (Single Correct Answer)

-0.6

Volume of a cube of a side $$''l''$$ and volume of sphere of radius $$' r '$$ are equal. Both the cube and the sphere are solid and same material. They are being cast. The ratio of the solidification time of the cube to the same of the sphere is

$${\left( {4\pi /6} \right)^3}.{\left( {r/l} \right)^6}$$

$$\left( {4\pi /6} \right).{\left( {r/l} \right)^2}$$

$$\left( {4\pi /6} \right).{\left( {r/l} \right)^3}$$

$${\left( {4\pi /6} \right)^2}.{\left( {r/l} \right)^4}$$

GATE ME 2006

MCQ (Single Correct Answer)

-0.6

In a sand casting operation, the total liquid head is maintained constant such that it is equal to the mould height. The time taken to fill the mould with a top gate is $${t_A}.$$ If the same mould is filed with a bottom gate, then the time taken is $${t_B}.$$ Ignore the time required to fill the runner and frictional effects. Assume atmospheric pressure at the top molten metal surfaces. The relation between the $${t_A}$$ and $${t_B}$$ is

$${t_B} = \sqrt 2 .{t_A}$$

$${t_B} = 2.{t_A}$$

$${t_B} = {{{t_A}} \over {\sqrt 2 }}$$

$${t_B} = 2\sqrt 2 .{t_A}$$

GATE ME 2005

MCQ (Single Correct Answer)

-0.6

A mould has a downsprue whose length is $$20$$ $$cm$$ and the cross sectional area at the base of the down sprue is $$1\,\,c{m^2}.$$ The down sprue feeds a horizontal runner leading into the mould cavity of volume $$1000\,\,c{m^3}.$$ The time required to fill the mould cavity will be

$$4.05$$ s

$$5.05$$ s

$$6.05$$ s

$$7.25$$ s

GATE ME 2005

MCQ (Single Correct Answer)

-0.6

Match List - $${\rm I}$$ (products) with List - $${\rm II}$$ (casting process) and select the correct answer using the codes given below the lists GATE ME 2005 Production Engineering - Casting Question 2 English