Machining Processes & Machine Tool operations MCQ Mechanical

Machining Processes & Machine Tool operations MCQ Mechanical

  October 14, 2019    anurageros

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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 metals
B. 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

9. In metal cutting operations continuous chips are produced while machining
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