Which one of the following material will require the largest size of riser for the same size of casting?
A. Aluminium
B. Cast iron
C. Steel
D. Copper
Answer: Option C
Solution(By Examveda Team)
Steel will require the largest size of riser for the same size of castingJoin The Discussion
Comments ( 4 )
Related Questions on Workshop Technology
The brass and bronze are welded by _________ flame.
A. Neutral
B. Oxidizing
C. Carburising
D. All of these
In TIG arc welding, the welding zone is shielded by an atmosphere of
A. Helium gas
B. Argon gas
C. Either (A) or (B)
D. None of these
In sheet metal blanking, shear is provided on punches and dies so that
A. Press load is reduced
B. Good cut edge is obtained
C. Warping of sheet is minimized
D. Cut blanks is straight
C how
C
Riser is provided to compensate the liquid shrinkage and
Aluminum has largest shrinkage which about 6.5%
If the total shrinkage is considered which is
Liquid shrinkage + solid shrinkage = total shrinkage
Then
In that case steel is right answer
Aluminium has the largest liquid shrinkages which is about 6.5%