Discussion
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- Question
When the metal is removed by erosion caused by rapidly recurring spark discharges between the tool and work, the process is known as
Options- A. electro-chemical machining
- B. electro-discharge machining
- C. ultra-sonic machining
- D. none of these
- Correct Answer
- electro-discharge machining
- 1. The plain milling machine is more rigid and heavier in construction than a universal milling machine of the same size.
Options- A. Correct
- B. Incorrect Discuss
- 2. The cutting speed is zero at the periphery and it is maximum at the centre of the drill.
Options- A. Yes
- B. No Discuss
- 3. In electro-discharge machining, dielectric is used to
Options- A. help in the movement of the sparks
- B. control the spark discharges
- C. act as coolant
- D. all of these Discuss
- 4. The grooving is an operation of
Options- A. bevelling the extreme end of a workpiece
- B. embossing a diamond shaped pattern on the surface of a workpiece
- C. reducing the diameter of a workpiece over a very narrow surface
- D. enlarging the end of a hole cylindrically Discuss
- 5. The lathe spindles at the nose end have
Options- A. internal screw threads
- B. external screw threads
- C. no threads
- D. tapered threads Discuss
- 6. The obtuse angle, included between the chisel edge and the lip as viewed from the end of a drill, is called
Options- A. helix or rake angle
- B. point angle
- C. chisel edge angle
- D. lip clearance angle Discuss
- 7. The structure of a grinding wheel depends upon
Options- A. hardness of the material being ground
- B. nature of the grinding operation
- C. finish required
- D. all of these Discuss
- 8. The ductile materials, during machining, produce
Options- A. continuous chips
- B. discontinuous chips
- C. continuous chips with built up edge
- D. either (a) or (c) Discuss
- 9. It is desired to perform the operations like drilling, reaming, counter-boring etc. on a work piece. Which of the following machine will be used?
Options- A. Sensitive drilling machine
- B. Radial drilling machine
- C. Gang drilling machine
- D. Multiple spindle drilling machine Discuss
- 10. An operation of embossing a diamond shaped pattern on the surface of a workpiece, is known as
Options- A. counter-boring
- B. grooving
- C. knurling
- D. facing Discuss
Production Engineering problems
Search Results
Correct Answer: Correct
Correct Answer: No
Correct Answer: all of these
Correct Answer: reducing the diameter of a workpiece over a very narrow surface
Correct Answer: external screw threads
Correct Answer: chisel edge angle
Correct Answer: all of these
Correct Answer: either (a) or (c)
Correct Answer: Gang drilling machine
Correct Answer: knurling
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