Production Engineering problems
- 1. Which of the following statement is wrong about ultra-sonic machining?
Options- A. It is best suited for machining hard and brittle materials.
- B. It cuts materials at very slow speeds.
- C. It removes large amount of material.
- D. It produces good surface finish. Discuss
Correct Answer: It removes large amount of material.
- 2. When the cutting edge of the tool is dull, then during machining
Options- A. continuous chips are formed
- B. discontinuous chips are formed
- C. continuous chips with built-up edge are formed
- D. no chips are formed Discuss
Correct Answer: continuous chips with built-up edge are formed
- 3. The different spindle speeds on a lathe form
Options- A. arithmetical progression
- B. geometrical progression
- C. harmonical progression
- D. any one of these Discuss
Correct Answer: geometrical progression
- 4. A single point thread cutting tool should ideally have
Options- A. zero rake angle
- B. positive rake angle
- C. negative rake angle
- D. point angle Discuss
Correct Answer: zero rake angle
- 5. The angle included between the two lips projected upon a plane parallel to the drill axis and paralled to the two cutting lips, is called helix angle.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Incorrect
- 6. The method of grinding used to produce a straight or tapered surface on a workpiece, is
Options- A. internal cylindrical grinding
- B. form grinding
- C. external cylindrical grinding
- D. surface grinding Discuss
Correct Answer: external cylindrical grinding
- 7. Side rake angle on tools is provided to control chip flow.
Options- A. True
- B. False Discuss
Correct Answer: True
- 8. If the helix angle of the drill is made __________ 30°, then the torque required to drive the drill at a given feed will be more.
Options- A. equal to
- B. less than
- C. more than Discuss
Correct Answer: less than
- 9. A left hand tool on a lathe cuts most efficiently when it travels
Options- A. from left to right end of the lathe bed
- B. from right to left end of the lathe bed
- C. with the help of a compound slide
- D. across the bed Discuss
Correct Answer: from left to right end of the lathe bed
- 10. Larger end cutting edge angle __________ tool life.
Options- A. increases
- B. decreases
- C. does not effect Discuss
Correct Answer: decreases
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