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GATE 2019: Manufacturing Quiz 1
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Question 1
Wood flour is added to core sand to improve______.
Question 2
The casting is to be designed for a product. During the casting, the product was found to be non-uniform. So the riser designed should be located;
Question 3
A spherical drop of molten metal of radius 2 mm was found to solidify in 10 s. A similar drop of radius 8 mm would solidify in
Question 4
The primary purpose of a sprue in a casting mould is to
Question 5
Blast furnace uses the following as fuel
Question 6
A sprue in a sand mould has a top diameter of 20mm and height of 200mm. The velocity of the molten metal at the entry of the sprue is 0.5m/s. Assume acceleration due to gravity as 9.8 m/s2 and neglect all losses. If the mould is well ventilated, the velocity (upto 3 decimal points accuracy) of the molten metal at the bottom of the sprue is ________ m/s.
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