01-12-2012, 11:53 AM
INTERNAL TEST – III
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PART-A
ANSWER ALL THE QUESTIONS
1. _____________ is a process of generating ideas and turning them into reality:
(a) Design (b) Manufacturing © Fabrication (d) None of the above.
2. If allowance is positive, then the fit is known as _______________.
(a) Interference fit (b) Clearance fit © Snug fit (d) None of the above.
3. If allowance is negative, then the fit is known as _______________.
(a) Interference fit (b) Clearance fit © Snug fit (d) None of the above.
4. If allowance is approximately zero, then the fit is known as ______________.
(a) Interference fit (b) Clearance fit © Snug fit (d) None of the above.
5. In a bearing the allowance is _______________.
(a) Positive (b) Negative © Positive or Negative (d) Zero
6. ______________ can be made with casting processes using sand molds.
a. Complex castings b. Cylindrical parts c. Repetitive castings d. None of these
7. Shell molding is accomplished by coating a hot ferrous pattern with sand which has been mixed with a ___________________.
a. PVC b. Thermosetting plastic c. ABS d. PET.
8. Parting line is a continuous line around a part which _________________. a. separates two halves b. which is the top of cope c. outline of the mold cavity d. none of these
9. ______________ are the most common defect in casting design.
a. Cracks b. blow holes c. Hot spots d. shrinkage
10. ___________ carbon steels are easily welded.
a. High b. Medium c. Low d. Silicon
PART- B
ANSWER ALL THE QUESTIONS
11. What is process capability?
12. Write the drawbacks of improper material selection.
13. Give any two design rules for designing machine parts.
14. Define group technology and part family concept.
15. Give two examples regarding right and wrong positions for drilled holes.
PART- C
ANSWER ANY THREE
16. Discuss Explain the basic principles of designing for economic production.
17. Discuss the general design rules.
18. Differentiate dimensional tolerance from form tolerance.
19. Discuses simplification by separation and amalgamation with neat sketches.
20. Disuses the principles of form design of forging with neat sketches.