51.

52.

53.

54.

55.

56.

57.

88.

88.

Advantage of sand moulding :
(A) it can cast ferrous and non ferrous metals
(B) it can reuse again and again
(C) it can maintain good tolerance
(D) it will give smooth surface finish

Name the method of casting in which the molten metal fed by gravity into the mould :

(A) slush casting (7) permanent mould casting
(C) die casting (D) centrifugal casting

A casting defect which results in general enlargement of casting is known as :
(५) blow ‏عامط‎ (B) shift
(C) sand wash (1) வி

Cast iron and steel pipes are produced by :
(A) true centrifugal casting (B) investment casting
(C) die casting (D) slush casting

A slurry coated pattern is used in :
(ಯ) semi centrifugal casting (18) die casting
(C) investment casting (D) continuous casting

In which casting method the core is avoided to make hellow?
(५) hot chamber die casting (18) permanent mould casting
(C) slush casting (D) ہم(3‎ chamber die casting

What is the difference between the cold chambers over the hot chamber die casting?
(ക) separate melting unit (B) casting without melting
(0) plunger used (D) permanent mould is used

In centrifugal casting method :
(A) eore is made of sand (18) core is made of ferrous metal
(0 core is made of nonferrous metal (11) nocore is used

Ornaments and toys of nonferrous metal alloys are made hy :
(A) die casting (B) slush casting
(C) centrifugal casting (I3 continuous casting

9 169/2014

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