Foundry Metallurgy - Study Mode
[#16] A vertical tapered sprue of 16 cms length is, kept full during pouring. To just avoid any aspiration, the cross-sectional areas at the centre and the bottom of the sprue must be in the ratio of
Correct Answer
(B) √2 : 1
[#17] In hot chamber method of die casting . . . . . . . .
Correct Answer
(A) Only low melting point metals can be cast
[#18] The process of formation of new stable tiny particle of product phase in the parent phase during phase transformation process.
Correct Answer
(B) Nucleation
[#19] The machining allowances for medium section cast steel
Correct Answer
(B) 4.5 mm
[#20] A cope and drag pattern is another form of
Correct Answer
(C) Split pattern