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MCQs

Total Questions : 408 | Page 3 of 41 pages
Question 21. While cutting helical gears on a non-differential gear hobber, the feed change gear ratio is
  1.    independent of index change gear ratio
  2.    dependent on speed change gear ratio
  3.    inter-related to index change gear ratio
  4.    independent of speed and index change gear ratio
 Discuss Question
Answer: Option C. -> inter-related to index change gear ratio
Answer: (c).inter-related to index change gear ratio
Question 22. The swing diameter over the bed is __________ the height of the centre measured from the bed of the lathe.
  1.    equal to
  2.    twice
  3.    thrice
  4.    one-half
 Discuss Question
Answer: Option B. -> twice
Answer: (b).twice
Question 23. In grinding irregular, curved, tapered, convex and concave surfaces, the grinder used is
  1.    cylindrical grinder
  2.    internal grinder
  3.    surface grinder
  4.    tool and cutter grinder
 Discuss Question
Answer: Option C. -> surface grinder
Answer: (c).surface grinder
Question 24. Down milling is also called
  1.    conventional milling
  2.    climb milling
  3.    end milling
  4.    face milling
 Discuss Question
Answer: Option B. -> climb milling
Answer: (b).climb milling
Question 25. Any number of equal divisions can be obtained on milling machine by
  1.    direct indexing
  2.    simple indexing
  3.    compound indexing
  4.    differential indexing
 Discuss Question
Answer: Option B. -> simple indexing
Answer: (b).simple indexing
Question 26. A dense structure of a grinding wheel is denoted by the number 9 to 15 or higher.
  1.    Yes
  2.    No
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option B. -> No
Answer: (b).No
Question 27. The surface finish is improved by the increase in
  1.    cutting speed
  2.    nose radius
  3.    true rake angle
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 28. The cutting speed for drilling copper with high speed steel drills varies from
  1.    10 to 20 m/min
  2.    18 to 30 m/min
  3.    24 to 45 m/min
  4.    60 to 90 m/min
 Discuss Question
Answer: Option B. -> 18 to 30 m/min
Answer: (b).18 to 30 m/min
Question 29. High speed steel tools retain their hardness upto a temperature of
  1.    250°C
  2.    350°C
  3.    500°C
  4.    900°C
 Discuss Question
Answer: Option D. -> 900°C
Answer: (d).900°C
Question 30. A taper tap has
  1.    its end tapered for about three or four threads
  2.    its end tapered for about eight or ten threads
  3.    full threads for the whole of its length
  4.    none of the above
 Discuss Question
Answer: Option B. -> its end tapered for about eight or ten threads
Answer: (b).its end tapered for about eight or ten threads

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