21. In gear hobbing
22. The actual feed in centerless grinders is given by (where d = Dia. of regulating wheel, n = Revolutions per minute, and α = Angle of inclination of wheel)
23. In order to grind soft material
24. The in-feed grinding is used to
25. The cutting tool in a milling machine is mounted on
26. 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?
27. In which of the following machine, the work is usually rotated while the drill is fed into work?
28. Crater wear is predominant in
29. In a shaper, the metal is removed during
30. The type of reamer used for reaming soft aluminium or copper, is
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