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MCQs

Total Questions : 408 | Page 41 of 41 pages
Question 401. Hard and tough materials like cast iron should be turned at
  1.    slow speed
  2.    high speed
  3.    any speed
  4.    certain specific speed
 Discuss Question
Answer: Option A. -> slow speed
Answer: (a).slow speed
Question 402. The cutting speed for counter-boring should be __________ that of drilling operation.
  1.    equal to
  2.    less than
  3.    greater than
  4.    None of these
 Discuss Question
Answer: Option C. -> greater than
Answer: (c).greater than
Question 403. The usual value of the helix angle of a drill is
  1.    20°
  2.    30°
  3.    45°
  4.    60°
 Discuss Question
Answer: Option B. -> 30°
Answer: (b).30°
Question 404. A fine grained grinding wheel is used to grind hard materials.
  1.    Correct
  2.    Incorrect
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option A. -> Correct
Answer: (a).Correct
Question 405. A single point thread cutting tool should ideally have
  1.    zero rake angle
  2.    positive rake angle
  3.    negative rake angle
  4.    point angle
 Discuss Question
Answer: Option A. -> zero rake angle
Answer: (a).zero rake angle
Question 406. Cast iron during machining produces
  1.    continuous chips
  2.    discontinuous chips
  3.    continuous chips with built-up-edge
  4.    none of these
 Discuss Question
Answer: Option B. -> discontinuous chips
Answer: (b).discontinuous chips
Question 407. The work or surface speed for cylindrical grinding varies from
  1.    5 to 10 m/min
  2.    10 to 20 m/min
  3.    20 to 30 m/min
  4.    40 to 60 m/min
 Discuss Question
Answer: Option C. -> 20 to 30 m/min
Answer: (c).20 to 30 m/min
Question 408. The cutting tool in a milling machine is mounted on
  1.    spindle
  2.    arbor
  3.    column
  4.    knee
 Discuss Question
Answer: Option B. -> arbor
Answer: (b).arbor

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