Production Technology Machinery

1. The Taper on lathe spindle is
Ans: 1 : 20
 

2. The included angle of lathe centre is
Ans: 60^o
 

3. The lathe spindle at the nose and has
Ans: external threads
 

4. In lathe, The carriage and tail stock are guided on
Ans: Different guide ways
 

5. Size or a shaper is given by-
Ans: Stroke length
 

6. Coating of Zinc on steel is called
Ans: Galvanizing
 

7. What is 'Burr'?
Ans: Sharp edge remaing on metal after cutting
 

8. Tool signature comprises of ..... elements
Ans: 7
 

9. ...... is the commonly used value of helix for a standard twist drill
Ans: 29^o
 

10. Tapered Shank drills have a taper called
Ans: Morse
 

11. Forward Stroke of a shaper is
Ans: cutting stroke
 

12. Which of the following process would remove the least material?
    a) Grinding                      b) Lapping                c) Honing                 d) Super finishing
Ans: b (Lapping)
 

13. The operation of finishing a drilled hole to the correct size is known as
Ans: Reaming
 

14. Chuck used on torret lathe is
Ans: Collet chuck
 

15. Kerosene is used as a coolant, while machining
Ans: Aluminium
 

16. Mandrels are used to hold
Ans: hollow work pieces
 

17. The bed of a machine is normally made of
Ans: Cast iran
 

18. The Operation or enlarging the already drilled hole is called
Ans: Boring
 

19. Feed in a lathe is expressed in
Ans: mm/ revolution
 

20. Most commonly used drill point angle is
Ans: 118^o
 

21. Which of the following is a single point cutting tool
      a) Twist drill                  b) Reamer             c) Turning Tool                 d) Milling cutter
Ans: c (Turning Tool)
 

22. To Provide a positive drive, all Taper shanked drills are provided with
Ans: Tang
 

23. Drills are usually made of
Ans: High speed steel
 

24. Which of the following tool materials has highest cutting speed?
      a) Carbon steel             b) Tool steel             c) High speed steel           d) Carbide
Ans: d (Carbide)
 

25. Size of planer is specified by
Ans: Size of table and height of cross rail
 

26. Drilling is an example of
Ans: Oblique cutting
 

27. The binding material used in cemented. Carbide tools is
Ans: cobalt
 

28. Burnishing is an operation of
Ans: Gear finishing
 

29. One of the important parameters of lathe specification is
Ans: Swing over tool bed
 

30. A quill is a
Ans: Non-rotating part of drill spindle mechanism