41. While cutting helical gears on a non-differential gear hobber, the feed change gear ratio is
A. independent of index change gear ratio
B. dependent on speed change gear ratio
C. inter-related to index change gear ratio
D. independent of speed and index change gear ratio
42. The swing diameter over the bed is __________ the height of the centre measured from the bed of the lathe.
A. equal to
B. twice
C. thrice
D. one-half
43. In grinding irregular, curved, tapered, convex and concave surfaces, the grinder used is
A. cylindrical grinder
B. internal grinder
C. surface grinder
D. tool and cutter grinder
44. Down milling is also called
A. conventional milling
B. climb milling
C. end milling
D. face milling
45. Any number of equal divisions can be obtained on milling machine by
A. direct indexing
B. simple indexing
C. compound indexing
D. differential indexing
46. The depth of cut in drilling is __________ the drill diameter.
A. equal to
B. one-fourth
C. one-half
D. double
47. The type of tool used on lathe, shaper and planer is
A. single point cutting tool
B. two point cutting tool
C. three point cutting tool
D. multi-point cutting tool
48. A __________ grinding wheel is used to grind soft materials.
A. coarse grained
B. medium grained
C. finegrained
49. The relation between tool life (T) and cutting speed (V) is VTn = Constant. In this relation, the value of n depends upon
A. work material
B. tool material
C. working conditions
D. type of chip produced
50. In order to grind soft material
A. coarse grained grinding wheel is used
B. fine grained grinding wheel is used
C. medium grained grinding wheel is used
D. any one of these