1
GATE ME 2006
+2
-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
A
$${t_B} = \sqrt 2 .{t_A}$$
B
$${t_B} = 2.{t_A}$$
C
$${t_B} = {{{t_A}} \over {\sqrt 2 }}$$
D
$${t_B} = 2\sqrt 2 .{t_A}$$
2
GATE ME 2005
+2
-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
A
$$4.05$$ s
B
$$5.05$$ s
C
$$6.05$$ s
D
$$7.25$$ s
3
GATE ME 2005
+2
-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 A
$$A - 3,\,\,B - 2,\,\,C - 4,\,\,D - 5$$
B
$$A - 1,\,\,B - 3,\,\,C - 4,\,\,D - 5$$
C
$$A - 1,\,\,B - 2,\,\,C - 3,\,\,D - 4$$
D
$$A - 3,\,\,B - 2,\,\,C - 5,\,\,D - 4$$
4
GATE ME 2004
+2
-0.6
Gray cast iron blocks $$200 \times 100 \times 10\,\,mm$$ are to be cast in sand moulds. Shrinkage allowance for pattern making is $$1$$%. The ratio of the volume of pattern to that of the casting will be
A
$$0.97$$
B
$$0.99$$
C
$$1.01$$
D
$$1.03$$
GATE ME Subjects
Engineering Mechanics
Machine Design
Strength of Materials
Heat Transfer
Production Engineering
Industrial Engineering
Turbo Machinery
Theory of Machines
Engineering Mathematics
Fluid Mechanics
Thermodynamics
General Aptitude
EXAM MAP
Joint Entrance Examination