Discussion
The allowance provided to a pattern for easy withdrawal from a sand mold is
Answer: D
It is the shake allowance.
Before a pattern is lifted out of the sand, it is rapped or shaken so that it loosens, which slightly enlarges the mould cavity. The shake (rapping) allowance compensates for that enlargement; because it acts the opposite way to the other allowances, the pattern is made slightly smaller to allow for it.
The finishing (machining) allowance provides extra metal for machining, the shrinkage allowance makes up for contraction on cooling, and the distortion allowance counteracts warping of irregular castings. None of them is about withdrawing the pattern.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development