1
GATE ME 1987
Subjective
+4
-0
A down sprue of $$180mm$$ length has diameter of $$20mm$$ at its top end. The liquid metal in the pouring cup is main-tained upto $$60$$ $$mm$$ height. What should be the theoretical diameter of down sprue at its lowest end to ensure that there is no aspiration effects.
2
GATE ME 1987
MCQ (Single Correct Answer)
+1
-0.3
For wire drawing operation, the work material should essentially be
A
ductile
B
tough
C
hard
D
malleable
3
GATE ME 1987
Fill in the Blanks
+1
-0
In forging operation the sticking friction condition occurs near the ...... (Center/ ends) while sliding friction condition occurs near the ...... (Center / ends)
4
GATE ME 1987
MCQ (Single Correct Answer)
+1
-0.3
Cutting tools are provided with large positive rake angle mainly for
A
Increasing the strength of the cutting edge
B
Avoiding rubbing action with the finished surfaces
C
Reducing the magnitude of the cutting force
D
Better heat dissipation
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Graduate Aptitude Test in Engineering
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