Discussion
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- Question
Lathe bed is made of
Options- A. mild steel
- B. alloy steel
- C. pig iron
- D. chilled cast iron
- Correct Answer
- chilled cast iron
- 1. An open structure of a grinding wheel is denoted by the number 1 to 8.
Options- A. Correct
- B. Incorrect Discuss
- 2. For machining a cast iron workpiece by a high speed steel tool, the average cutting speed is
Options- A. 10 m/min
- B. 15 m/min
- C. 22 m/min
- D. 30 m/min Discuss
- 3. The correct sequence of the following parameters in order of their maximum to minimum influence on tool life is
Options- A. feed rate, depth of cut, cutting speed
- B. depth of cut, cutting speed, feed rate
- C. cutting speed, feed rate, depth of cut
- D. feed rate, cutting speed, depth of cut Discuss
- 4. In an orthogonal cutting, the depth of cut is halved and the feed rate is double. If the chip thickness ratio is unaffected with the changed cutting conditions, the actual chip thickness will be
Options- A. doubled
- B. halved
- C. quadrupled
- D. unchanged Discuss
- 5. For turning internal tapers, the suitable method is
Options- A. by a form tool
- B. by setting over the tail stock
- C. by a taper turning attachment
- D. by swivelling the compound rest Discuss
- 6. The form grinding is used to grind gear teeth, threads, splined shafts and holes.
Options- A. Correct
- B. Incorrect Discuss
- 7. Surface grinding is done to produce
Options- A. tapered surface
- B. flat surface
- C. internal cylindrical holes
- D. all of these Discuss
- 8. Continuous chips with built up edge are formed during machining of
Options- A. brittle metals
- B. ductile metals
- C. hard metals
- D. soft metals Discuss
- 9. 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
- 10. 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
Production Engineering problems
Search Results
Correct Answer: Incorrect
Correct Answer: 22 m/min
Correct Answer: cutting speed, feed rate, depth of cut
Correct Answer: doubled
Correct Answer: by a taper turning attachment
Correct Answer: Correct
Correct Answer: flat surface
Correct Answer: ductile metals
Correct Answer: high speed of wheel
Correct Answer: straddle milling
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