Mechanical Engineering - Workshop Technology - Discussion

Discussion Forum : Workshop Technology - Section 4 (Q.No. 42)
42.
Which one of the following material will require the largest size of riser for the same size of casting?
Aluminium
Cast iron
Steel
Copper
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
21 comments Page 2 of 3.

Dinesh said:   8 years ago
Total shrinkage is more in steel.

Liquid shrinkage is more in aluminium.

Solid shrinkage more in brass.

Rahul Urkude said:   10 years ago
Aluminium is the answer because shrinkage is more in aluminium and V of riser > 3 times V of casting.

SAGAR PATEL said:   10 years ago
Aluminium has shrinkage of 16 mm/m while steel has 20 mm/m, so I think steel is correct answer.

Kalyan Seervi said:   6 years ago
Liquid and solidification allowance are higest in Aluminium.

So, the Correct Answer is A.

Himanshu Saini said:   9 years ago
Aluminium contraction rate in percentage is 1.8% and steel is 2% so answer is steel.

Tej said:   9 years ago
Aluminium has highest liquid shrinkage. And steel has highest ROYAL SHRINKAGE.

Don said:   1 decade ago
Shrinkage allowance steel is higher then aluminium. I think it is C.

Deep said:   7 years ago
Aluminum is the correct answer.

Vinay BEL said:   5 years ago
Aluminum is the correct answer.

Sohan said:   7 years ago
Steel has a highest shrinkage.
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