Discussion
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- Question
Spot facing is an operation of smoothing and squaring the surface around a hole.
Options- A. True
- B. False
- Correct Answer
- True
- 1. Ceramic cutting tools are
Options- A. made by cold pressing of aluminium oxide powder
- B. available in the form of tips
- C. brittle and have low bending strength
- D. all of these Discuss
- 2. Which of the following statement is correct about hot machining?
Options- A. It requires less power than machining metals at room temperature.
- B. The rate of tool wear is lower.
- C. It is used for machining high strength and high temperature resistant materials.
- D. all of the above Discuss
- 3. A better machinable metal is one which gives
Options- A. lower chip-tool contact area and larger shear angle
- B. higher chip-tool contact area and smaller shear angle
- C. lower chip-tool contact area and smaller shear angle
- D. higher chip-tool contact area and larger shear angle Discuss
- 4. In order to achieve a specific surface finish in single point turning, the most important factor to be controlled is
Options- A. depth of cut
- B. cutting speed
- C. feed
- D. tool rake angle Discuss
- 5. For harder alloy steel, the point angle of the drill is kept
Options- A. equal to 118°
- B. less than 118°
- C. more than 118°
- D. any one of these Discuss
- 6. The tail stock and the carriage of a lathe may be guided on same or different guideway.
Options- A. True
- B. False Discuss
- 7. In __________ operation, the chip thickness is minimum at the beginning of the cut and it reaches to the maximum when the cut terminates.
Options- A. conventional milling
- B. climb milling
- C. face milling
- D. end milling Discuss
- 8. In centreless grinders, the regulating wheel is inclined at
Options- A. 0° to 8°
- B. 9° to 15°
- C. 16° to 20°
- D. 21° to 25° Discuss
- 9. The average cutting speed for turning mild steel with a high speed steel tool is
Options- A. 15 to 19 m/min
- B. 25 to 31 m/min
- C. 60 to 90 m/min
- D. 90 to 120 m/min Discuss
- 10. A drill bit of 20 mm diameter rotating at 500 r.p.m. with a feed rate of 0.2 mm/revolution is used to drill a through-hole in a mild steel plate 20 mm thickness. The depth of cut in this drilling operation is
Options- A. 0.2 mm
- B. 10 mm
- C. 20 mm
- D. 100 mm Discuss
Production Engineering problems
Search Results
Correct Answer: all of these
Correct Answer: all of the above
Correct Answer: lower chip-tool contact area and larger shear angle
Correct Answer: cutting speed
Correct Answer: more than 118°
Correct Answer: True
Correct Answer: conventional milling
Correct Answer: 0° to 8°
Correct Answer: 25 to 31 m/min
Correct Answer: 20 mm
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