Discussion
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- Question
The hole drilled for tapping should be smaller than the tap size by twice the depth of thread.
Options- A. Agree
- B. Disagree
- Correct Answer
- Agree
- 1. Flank 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
- C. cutting edge only
- D. front face only Discuss
- 2. A drill mainly used in drilling brass, copper or softer materials, is
Options- A. flat drill
- B. straight fluted drill
- C. parallel shank twist drill
- D. tapered shank twist drill Discuss
- 3. The size of a lathe is specified by the
Options- A. length between centres
- B. swing diameter over the bed
- C. swing diameter over the carriage
- D. all of these Discuss
- 4. Dielectric is used in
Options- A. electro-chemical machining
- B. ultra-sonic machining
- C. electro-discharge machining
- D. laser machining Discuss
- 5. The hole to be drilled for tapping is __________ the outside diameter of the thread on the tap.
Options- A. equal to
- B. smaller than
- C. greater than Discuss
- 6. Which of the following statement is wrong?
Options- A. The larger side rake angle produces chipping.
- B. The smaller rake angle produces excessive wear and deformation in tool.
- C. The side cutting edge angle (less than 15°) increases tool life.
- D. The increase in nose radius decreases tool life. Discuss
- 7. Slow speed of the spindle is necessary in
Options- A. thread cutting
- B. turning a work of larger diameter
- C. turning a hard or tough material
- D. all of these Discuss
- 8. The tool life is affected by
Options- A. depth of cut
- B. cutting speed
- C. feed
- D. all of these Discuss
- 9. In electro-discharge machining, tool is made of
Options- A. brass
- B. copper
- C. copper tungsten alloy
- D. all of these Discuss
- 10. The cutting speed is maximum while machining __________ with a high speed steel tool.
Options- A. cast iron
- B. mild steel
- C. brass
- D. aluminium Discuss
Production Engineering problems
Search Results
Correct Answer: nose part, front relief face and side relief face of the cutting tool
Correct Answer: straight fluted drill
Correct Answer: all of these
Correct Answer: electro-discharge machining
Correct Answer: smaller than
Correct Answer: The increase in nose radius decreases tool life.
Correct Answer: all of these
Correct Answer: all of these
Correct Answer: all of these
Correct Answer: aluminium
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