Production Engineering Objective Questions with answers - Set 25 - ObjectiveBooks

Production Engineering Objective Questions with answers - Set 25

Practice Test: Question Set - 25

1. A grinding wheel is said to be of _________ if the abrasive grains can be easily dislodged.
    (A) Soft grade
    (B) Medium grade
    (C) Hard grade
    (D) None of these

2. The high cutting speed and large rake angle of the tool will result in the formation of
    (A) Continuous chips
    (B) Discontinuous chip
    (C) Continuous chips with built up edge
    (D) None of these

3. The facing is an operation of
    (A) Beveling 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) Machining the ends of a workpiece to produce a flat surface square with the axis

4. Fixtures are used
    (A) For holding and guiding the tool in drilling, reaming or tapping operations
    (B) For holding the work in milling, grinding, planing or turning operations
    (C) To check the accuracy of workpiece
    (D) None of the above

5. In a shaper, the length of stroke is increased by
    (A) Increasing the centre distance of bull gear and crank pin
    (B) Decreasing the centre distance of bull gear and crank pin
    (C) Increasing the length of the arm
    (D) Decreasing the length of the slot in the slotted lever

6. The hole to be drilled for tapping is _________ the outside diameter of the thread on the tap.
    (A) Equal to
    (B) Smaller than
    (C) Greater than
    (D) None of these

7. The obtuse angle, included between the chisel edge and the lip as viewed from the end of a drill, is called
    (A) Helix or rake angle
    (B) Point angle
    (C) Chisel edge angle
    (D) Lip clearance angle

8. The lip angle of a single point tool is usually
    (A) 20° to 40°
    (B) 40° to 60°
    (C) 60° to 80°
    (D) None of these

9. Ceramic cutting tools are
    (A) Made by cold pressing of aluminium oxide powder
    (B) Available in the form of tips
    (C) Brittle and have low bending strength
    (D) All of these

10. The point angle of a drill, for drilling stainless steel, is
    (A) 90°
    (B) 118°
    (C) 135°
    (D) 150°

11. In metal machining, the work-tool contact zone is a zone where heat is generated due to
    (A) Plastic deformation of metal
    (B) Burnishing friction
    (C) Friction between the moving chip and the tool face
    (D) None of the above

12. Which of the following operation is first performed?
    (A) Spot facing
    (B) Boring
    (C) Tapping
    (D) Drilling

13. The parameter which completely defines the chip formation in a metal cutting process is
    (A) Shear angle
    (B) Chip-tool contact length
    (C) Both (A) and (B)
    (D) None of these

14. The cutting speed of a drill depends upon the
    (A) Material of drill
    (B) Type of material to be drilled
    (C) Quality of surface finish desired
    (D) All of these

15. The addition of lead, sulphur and phosphorus to low carbon steels, help to
    (A) Reduce built up edge
    (B) Break up chips
    (C) Improve machinability
    (D) All of these

Show and hide multiple DIV using JavaScript View All Answers

    Blogger Comment
    Facebook Comment