Discussion
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- Question
Crater wear occurs mainly on the
Options- A. nose part, front relief face and side relief face of the cutting tool
- B. face of the cutting tool at a short distance from the cutting edge only
- C. cutting edge only
- D. front face only
- Correct Answer
- face of the cutting tool at a short distance from the cutting edge only
- 1. In order to prevent tool from rubbing the work __________ on tools are provided.
Options- A. rake angles
- B. relief angles Discuss
- 2. Which of the following statement is incorrect with reference of lathe cutting tools?
Options- A. The flank of the tool is the surface or surfaces below and adjacent to the cutting edges
- B. The nose is the corner, arc or chamfer joining the side cutting and the end cutting edges
- C. The heel is that part of the tool which is shaped to produce the cutting edges and face
- D. The base is that surface of the shank which bears against the support and takes tangent pressure of the cut Discuss
- 3. A fine grained grinding wheel is used to grind hard materials.
Options- A. Correct
- B. Incorrect Discuss
- 4. If the diameter of the hole is subject to considerable variation, then for locating in jigs and fixtures, the pressure type of locator used is
Options- A. conical locator
- B. cylindrical locator
- C. diamond pin locator
- D. vee locator Discuss
- 5. In the relation VTn = C, the value of n for carbide tools is
Options- A. 0.1 to 0.2
- B. 0.20 to 0.25
- C. 0.25 to 0.40
- D. 0.40 to 0.55 Discuss
- 6. Lapping is an operation of
Options- A. making a cone-shaped enlargement of the end of a hole
- B. smoothing and squaring the surface around a hole
- C. sizing and finishing a small diameter hole
- D. producing a hole by removing metal along the circumference of a hollow cutting tool Discuss
- 7. Grinding wheels should be tested for balance
Options- A. only at the time of manufacture
- B. before starting the grinding operation
- C. at the end of grinding operation
- D. occasionally Discuss
- 8. A twist drill is a
Options- A. side cutting tool
- B. front cutting tool
- C. end cutting tool
- D. none of these Discuss
- 9. Cast iron during machining produces
Options- A. continuous chips
- B. discontinuous chips
- C. continuous chips with built-up-edge
- D. none of these Discuss
- 10. In ultra-sonic machining, the metal is removed by
Options- A. using abrasive slurry between the tool and work
- B. direct contact of tool with the work
- C. maintaining an electrolyte between the work and tool in a very small gap between the two
- D. erosion caused by rapidly recurring spark discharges between the tool and work Discuss
Production Engineering problems
Search Results
Correct Answer: relief angles
Correct Answer: The heel is that part of the tool which is shaped to produce the cutting edges and face
Correct Answer: Correct
Correct Answer: conical locator
Correct Answer: 0.20 to 0.25
Correct Answer: sizing and finishing a small diameter hole
Correct Answer: occasionally
Correct Answer: end cutting tool
Correct Answer: discontinuous chips
Correct Answer: using abrasive slurry between the tool and work
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