Discussion
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- Question
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
- Correct Answer
- all of the above
- 1. 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
- 2. 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
- 3. 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
- 4. In a milling operation, two side milling cutters are mounted with a desired distance between them so that both sides of a workpiece can be milled simultaneously. This set up is called
Options- A. gang milling
- B. straddle milling
- C. string milling
- D. side milling Discuss
- 5. Crack in grinding wheel is developed due to
Options- A. high temperature developed at the contact of the wheel face and work
- B. grinding hard work
- C. low speed of wheel
- D. high speed of wheel Discuss
- 6. 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
- 7. Spot facing is an operation of smoothing and squaring the surface around a hole.
Options- A. True
- B. False Discuss
- 8. The tail stock and the carriage of a lathe may be guided on same or different guideway.
Options- A. True
- B. False Discuss
- 9. 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
- 10. 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
Production Engineering problems
Search Results
Correct Answer: lower chip-tool contact area and larger shear angle
Correct Answer: cutting speed
Correct Answer: more than 118°
Correct Answer: straddle milling
Correct Answer: high speed of wheel
Correct Answer: all of these
Correct Answer: True
Correct Answer: True
Correct Answer: conventional milling
Correct Answer: 0° to 8°
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