Discussion
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- Question
Half nut is used to lock the lathe carriage to the lead screw for thread cutting.
Options- A. True
- B. False
- Correct Answer
- True
- 1. The broaching operation in which the work moves past the stationary tool is called
Options- A. pull broaching
- B. push broaching
- C. surface broaching
- D. continuous broaching Discuss
- 2. The cutting speed for drilling aluminium, brass and bronze with carbon steel drills is __________ cutting speed for drilling mild steel with high speed steel drills.
Options- A. equal to
- B. less than
- C. more than Discuss
- 3. The drill spindles are provided with standard taper known as
Options- A. Morse taper
- B. Seller's taper
- C. Chapman taper
- D. Brown and Sharpe taper Discuss
- 4. Jigs are heavier than fixtures in construction.
Options- A. Yes
- B. No Discuss
- 5. EDM machining is applied for
Options- A. shaping carbide dies and punches having complicated profiles
- B. making large number of small holes in sieves and fuel nozzles
- C. embossing and engraving on harder materials
- D. all of these Discuss
- 6. In order to obtain a surface finish in the range of 0.75 ?m to 1.25 ?m , the operation used is called.
Options- A. grinding
- B. lapping
- C. honing
- D. buffing Discuss
- 7. The usual value of the point angle of a drill is
Options- A. 70°
- B. 100°
- C. 118°
- D. 130° Discuss
- 8. In determining the various forces on the chip, Merchant assumed that the
Options- A. cutting edge of the tool is sharp and it does not make any flank contact with the workpiece
- B. only continuous chip without built-up-edge is produced
- C. cutting velocity remains constant
- D. all of the above Discuss
- 9. Buffing wheels are made of
Options- A. softer metals
- B. cotton fabric
- C. carbon
- D. graphite Discuss
- 10. Which of the following statement is correct as regard to up milling?
Options- A. It can not be used on old machines due to backlash between the feed screw of the table and the nut.
- B. The chips are disposed off easily and do not interfere with the cutting.
- C. The surface milled appears to be slightly wavy.
- D. The coolant can be poured directly at the cutting zone where the cutting force is maximum. Discuss
Production Engineering problems
Search Results
Correct Answer: continuous broaching
Correct Answer: equal to
Correct Answer: Morse taper
Correct Answer: No
Correct Answer: all of these
Correct Answer: grinding
Correct Answer: 118°
Correct Answer: all of the above
Correct Answer: cotton fabric
Correct Answer: The surface milled appears to be slightly wavy.
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