1
GATE ME 2014 Set 3
MCQ (Single Correct Answer)
+1
-0.3
Match the casting defects (Group A) with the probable causes (Group B): GATE ME 2014 Set 3 Production Engineering - Casting Question 42 English
A
$$P - 1,\,\,Q - 3,\,\,R - 2,\,\,S - 4$$
B
$$P - 4,\,\,Q - 3,\,\,R - 2,\,\,S - 1$$
C
$$P - 3,\,\,Q - 4,\,\,R - 2,\,\,S - 1$$
D
$$P - 1,\,\,Q - 2,\,\,R - 4,\,\,S - 3$$
2
GATE ME 2014 Set 3
MCQ (Single Correct Answer)
+1
-0.3
The hot tearing in a metal casting is due to
A
high fluidity
B
high melt temperature
C
Wide range of solidification temperature
D
Low coefficient of thermal expansion
3
GATE ME 2014 Set 3
MCQ (Single Correct Answer)
+2
-0.6
A cylindrical blind riser with diameter $$d$$ and height $$h,$$ is placed on the top of the mold cavity of a closed type sand mold as shown in the figure. If the riser is of constant volume, then the rate of solidification in the riser is the least when the ratio $$h:d$$ is GATE ME 2014 Set 3 Production Engineering - Casting Question 1 English
A
$$1:2$$
B
$$2:1$$
C
$$1:4$$
D
$$4:1$$
4
GATE ME 2014 Set 3
Numerical
+2
-0
For spot welding of two steel sheets (base metal) each of $$3$$ $$mm$$ thickness, welding current of $$10000$$ $$A$$ is applied for $$0.2$$ $$s$$. The heat dissipated to the base metal is $$1000J.$$ Assuming that the heat required for melting $$1m{m^3}$$ volume of steel is $$20J$$ and interfacial contact resistance between sheets is $$0.0002$$$$\Omega $$, the volume (in $$m{m^3}$$) of weld nugget is _____________
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