MCQ
1161. Which of the following is not a limitation of wooden patterns?
Get abraded easily
Absorb moisture
Difficult machining
Poor wear resistance
1162. Which of the following is considered to be light wood?
Mahogany
Birch
Maple
White pine
1163. Which of the following is not a criteria for selecting pattern materials?
Method of moulding
Establishment of parting line
Chances of repeat orders
Complexity of the casting
1164. The axis of the cylindrical boss should be in the parting plane to have satisfactorily use of boss in casting.
True
False
1165. What should the sulphur level in foam plastic be?
More than 1%
Between 0.5% 1.19%
Less than 0.1%
Between 0.1% to 0.5%
1166. Which of the following is not a limitation of metal patterns?
Get rusted
Obtain rough surface finish
Expensive
Heavy
1167. Which of the following is the heaviest?
White
Cast Iron
Brass
Aluminium
1168. In solid casting method, the resin mixture is kept for how much time for hardening and curing?
1-2 hours
2-3 hours
3-4 hours
4-5 hours
1169. In sand castings, modification of bosses is done to-
have good surface finish
reduce the chances of porosity
eliminate the use of core
reduce casting yield
1170. The ability of moulding sand to withstand the heat of melt without showing any sign of called as-.
Strength
Refractiveness
Collapsibility
None
1171. Core boxes are made out of which pattern?
Plaster pattern
Metal patterns
Polystyrene pattern
Wax pattern
1172. Casting replica used to make the cavity is called as--
Mould
Cope
Pattern
None of the above
1173. Which of the following statement is true?
Casting is the replica of the object to be cast
Pattern is the replica of the casting object
Casting and the pattern are same things
Molten material is cassed into the casting cavity
1174. Which of the following material is not used for mold making?
Iron
Mild steel
Zinc
Alloy steel
1175. Which of the following patterns do not withstand rough handling?
Cast iron
Aluminium
Brass
Steel
1176. Steel is an alloy of which two elementy?
Iron and Brass
Brass and aluminium
Iron and carbon
Carbon and aluminium
1177. Metal patterns have a longer life than wooden pattern.
True
False
1178. The designing of a pattern does not include which of the following feature?
To locate the direction of the parting line and adjust the component accordingly
To determine regions and measurement of draft angles and radii of the sharp edges where allowances are to be given
To recognize and abolish the region of or where the defects could take place during casting
To 3D print the design for making the pattern.
1179. Which of the following patterns has high compressive strength?
Plastic pattern
Plaster pattern
Polystyrene pattern
Wax pattern
1180. Which of the following is 'not' an allowance given to the pattern for casting?
Shrinkage
Hole
Draft
Machining