34. Which one os not the part of the gating system?

(^) Core (B) Choke
(C) Runner (D) Riser
35. Chills are used for :
(A) Improving the finish (B) Directional solidification
(C) Collapsibility (D) Permeability

36. Name the tool used for repairing and finishing the mould surface after removing the pattern : ۱
(५) பிட்‌ (B) Swab
(0 Gaggers 10) ‏متاق‎

87. The sand used for making core is :
(ಗ). லாம்‌ (1) green sand
(0 loam sand (1)) oil sand

38. Which statement is not required for a good gating system?
(ಗಿ) metal should flow with minimum turbulence
(8) the metal must be rapidly poured into the mould cavity before it solidify
(C) metal should reserved and supply when it solidifies
(D) Loose sand, slag or oxides should be prevented from entering the mould cavity

89, Which one is not a foundry hand tool?
(^) 57185 (B) swab
{C) trowels (12) rammer

40. In order to produce uniform packing of sand in the mould :
(ಗಿ) a squeezing machine is used (B) sand slinger is used
(0 a stripper machine is used (D) ajolt machine is used

41. If the individual parts of a casting sluft'_s with respect to each other, the defect is known as :
(കു flashes (B) misrun
(C) cold shut (D) mismatch

42. Which one is not the reason for blow holes?
(A) excessive moisture content in moulding sand
(ए) inadequate permeability of moulding sand
(0 high pouring temperature
യ) high gas content in the molten metal

സ 7 1014
{९.7.0.}