1000+ Foundry Engineering Multiple Choice Questions and Answers - 2

Question: 6

Cores are made from core sand mixed with the binder which may be

(A) cement

(B) turpentine

(C) linseed oil

(D) none of the above

Question: 7

The function of riser is

(A) to supply molten metal to casting as it tends to contract during solidification

(B) to allow the heat of molten metal to dissipate to atmosphere

(C) to give an indication that mould is filled

(D) to provide an opening through which molten metal is poured

Question: 8

Skeleton patterns are generally used for

(A) hollow castings

(B) large castings

(C) non ferrous castings

(D) small castings

Question: 9

Electric furnaces can usually operate upto a temperature of

(A) 250°C

(B) 300°C

(C) 1000°C

(D) 1700°C

Question: 10

The burnt on sand causes difficulty in

(A) separation of sand and castings after pouring

(B) removal of castings from moulds

(C) machining of castings

(D) all of the above