Metal Cutting MCQ and Cutting Tools MCQ – Production Technology

41. To maintain a cutting speed of 88 meters per minute on 7 cm diameter work piece, the rpm of the machine is

  1. 200
  2. 300
  3. 400
  4. 500
Answer
Answer. c

42. Free cutting steels

  1. contain carbon in free form
  2. is used where rapid machining is the prime requirement
  3. require minimum cutting force
  4. none of the above
Answer
Answer. b

43. Surface finish is improved by the increase in

  1. cutting speed
  2. nose radius
  3. true rack angle
  4. all of the above
Answer
Answer. d

44. The portion of body which is reduced in diameter below the cutting edge pilot is known as

  1. Recess
  2. Shank
  3. Pilot
  4. Boring
Answer
Answer. a

45. Which of the following is a cutting tool material?

  1. High-speed steel
  2. Mild steel
  3. Cast iron
  4. Galvanized steel
Answer
Answer. a

46. Angle between the face and flank of the single point cutting tool is known as

  1. Rake angle
  2. Clearance angle
  3. Lip angle
  4. Point angle
Answer
Answer. c

47. Ceramic cutting tools are made up of

  1. tungsten carbide
  2. silicon oxide
  3. mixture of oxides and aluminum
  4. none of these
Answer
Answer. c

48. While orthogonal machining of a material with a tool with 12 degree rake, the theoretical minimum possible shear plane angle is

  1. 90 degrees
  2. 45 degrees
  3. 12 degrees
  4. 51 degrees
Answer
Answer. d

49. Slip line field theory for orthogonal cutting is proposed by

  1. Taylor
  2. Benedict
  3. Merchant
  4. Lee and Shaffer
Answer
Answer. d

50. Which of the following is the increasing order of cutting speed for cutting tool material?

  1. High Carbon Steel, Solid Tungsten Carbide, HSS, Ceramics & Diamond
  2. High Carbon Steel, HSS, Solid Tungsten Carbide, Ceramics & Diamond
  3. Ceramics, High Carbon Steel, Solid Tungsten Carbide, HSS & Diamond
  4. Diamond High Carbon Steel, Solid Tungsten Carbide, HSS & Ceramics
Answer
Answer. b
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