Machining Processes & Machine Tool operations MCQ Mechanical
1. The cutting edge of the tool is perpendicular to the direction of tool travel in
A. Orthogonal cutting of metals
B. Oblique cutting of metals
C. Both a and b
D. None of these
Ans: Orthogonal cutting of metals
2. The cutting edge of the tool is inclined at an angle less than 90 to the direction of tool travel in
A. Orthogonal cutting of metalsB. Oblique cutting of metals
C. Both a and b
D. None of these
Ans: Oblique cutting of metals
3. Two components of the cutting forces which are perpendicular acting on the cutting tool in
A. Orthogonal cutting of metals
B. Oblique cutting of metals
C. Both a and b
D. None of these
Ans: Orthogonal cutting of metals
4. Orthogonal cutting systems are also known as
A. One dimesional cutting system
B. Two dimensional cutting system
C. Three dimensional cutting system
D. none of these
Ans: Two dimensional cutting system
5. Three components of the cutting forces which are mutually perpendicular are acting at the cutting edge in
A. Orthogonal cutting of metals
B. Oblique cutting of metals
C. Both a and b
D. None of these
Ans: Oblique cutting of metals
6. In orthogonal cutting system
A. cutting tool prepares surface parellel to the work face
B. chip flows over the tool face and the direction of the chip flow velocity is normal to the cutting edge
C. maximum chip thickness occurs at the middle
D. all of these
Ans: D. all of these
7. In oblique cutting system
A. cutting edge of the tool may or maynot prepare a surface parellel to the work face
B. maximum chip thickness maynot occur at the middle
C. more than one cutting edges are in action
D. all of these
Ans: D. all of these
8. In metal cutting operation discontinuous chips are formed while machining
A. brittle material
B. ductile material
C. hard material
D. soft material
Ans: Brittle material
A. brittle material
B. ductile material
C. hard material
D. soft material
Ans: ductile material
10. When material is ductile and cutting speed is high then
A. continuous chips are formed
B. continuous chips with buid tup edges are formed
C. discontinuous chips are formed
D. none of these
Ans: continuous chips are formed
11. When material is ductile and cutting speed is low, then chips formed are
A. continuous chips are formed
B. continuous chips with builtup edges are formed
C. discontinuous chips are formed
D. none of these
Ans: continuous chips with build up edges are formed
12. When material is brittle, non ductile and cutting speed is low then
A. continuous chips are formed
B. continuous chips with builtup edges are formed
C. discontinuous chips are formed
D. none of these
Ans: discontinuous chips are formed
13. In metal cuttijng operation, chips are formed due to
A. linear transformation
B. shear deformation
C. linear translation
D. none of these
Ans:shear deformation
14. Discontinuous chips are formed during machining of
A. cast iron
B. mild steel
C. aluminium
D. none of these
Ans: cast iron
15. Continuous chips are formed during machining of
A. cast iron
B. mild steel
C. aluminium
D. none of these
Ans: mild steel
16. With increase of cutting speed, the built up edge
A. becomes longer
B. smaller or finally does not form
C. may or may not form
D. none of these
Ans: smaller or finally does not form
17. Material having highest cutting speed is
A. cast iron
B. aluminium
C. bronze
D. high speed steel
Ans: aluminium
18. Material having lowest cutting speed is
A. cast iron
B. bronze
C. aluminium
D. high speed steel
Ans: High speed steel
19. Chips with built up edges are formed while machining
A. brittle material
B. ductile material
C. cast material
D. all of these
Ans: Cast material
20. In metal cutting operation, shear angle is defined as an angle made by the shear plane with the
A. tool axis
B. direction of tool travel
C. central plane of work piece
D. none of these
Ans: direction of tool travel
21. Angle made by the face tool and the plane parellel to the base of the cutting tool is called
A. lip angle
B. rake angle
C. cutting angle
D. clearance angle
Ans: rake angle
22. Angle between the tool face and the ground end surface of flank is called
A. lip angle
B. rake angle
C. cutting angle
D. clearance angle
Ans: lip angle
23. Angle between the tool face and the line tangent to the machined surface at the cutting point is called
A. lip angle
B. rake angle
C. cutting angle
D. clearance angle
Ans: Cutting angle
24. Angle between shear plane and work surface is called
A. lip angle
B. rake angle
C. cutting angle
D. clearance angle
Ans: clearance angle
25. Angle on which strength of the tool depends is
A. lip angle
B. rake angle
C. cutting angle
D. clearance angle
Ans: rake angle
26. For brittle materials like brass, the rake angle provided is
A. zero
B. negative
C. positive
D. none of these
Ans:zero
27. For copper rake angle provided is
A. zero
B. negative
C. positive
D. none of these
Ans: negative
28. Carbide tipped tools generally have, rake angle
A. zero
B. negative
C. positive
D. none of these
Ans: Positive
29. For machining brass by high speed steel tool, the rake angle provided as
A. zero
B. negative
C. positive
D. none of these
Ans: zero
30. Negative rake angle are provided to
A. give a better finish
B. Increase the strength of the cutting tool point
C. decrease the temperature rise at the tool point
D. all of these
Ans:all of these
31. Negative rake angles are used for
A. heavy loads
B. carbide tools
C. hard materials
D. all of these
Ans. all of these
32. Cemented carbide tools are generally poor in
A. torsion
B. tension
C. compression
D. shear
Ans: shear
33. Binding materials used in cemented carbide tools is
A. nickel
B. cobalt
C. chromium
D. silicon
Ans: cobalt
34. Cutting tool used on lathe, shaper and planner machine is
A. Single point
B. two point
C. three point
D. multi point
Ans: single point
35. Cutting tool used on milling and breaching machine is
A. Single point
B. two point
C. three point
D. multi point
Ans: multi point
