Manufacturing And Production Technology(Engineering > Mechanical Engineering ) Questions and Answers

Question 1. Larger than 15° side cutting edge angle
  1.     Increases tool life
  2.     Decreases tool life
  3.     Produces chipping and decreases tool life
  4.     Results in excessive stress concentration and greater heat generation
Explanation:-
Answer: Option C. ->  Produces chipping and decreases tool life
Question 2. In a shaper, the length of stroke is increased by
  1.     Increasing the centre distance of bull gear and crank pin
  2.     Decreasing the centre distance of bull gear and crank pin
  3.     Increasing the length of the arm
  4.     Decreasing the length of the slot in the slotted lever
Explanation:-
Answer: Option A. ->  Increasing the centre distance of bull gear and crank pin
Question 3. The width of cutting edge of a parting off tool varies from
  1.    3 to 12 mm
  2.    5 to 20 mm
  3.    8 to 30 mm
  4.    15 to 40 mm
Explanation:-
Answer: Option A. -> 3 to 12 mm
Question 4. A twist drill is a
  1.    Side cutting tool
  2.    Front cutting tool
  3.    End cutting tool
  4.    None of these
Explanation:-
Answer: Option C. -> End cutting tool
Question 5. While current is shut down in the welding circuit, what kind of voltage exists between the output terminals of the welding machine?
  1.    GTAW
  2.    Open air cut voltage
  3.    Kerf
  4.    Gouging
Explanation:-
Answer: Option B. -> Open air cut voltage
Question 6. In ultrasonic machining, tool is made of
  1.    Tungsten carbide
  2.    Brass or copper
  3.    Diamond
  4.    Stainless steel
Explanation:-
Answer: Option B. -> Brass or copper
Question 7. In hot machining, tool is made of
  1.    Tungsten carbide
  2.    Brass or copper
  3.    Diamond
  4.    Stainless steel
Explanation:-
Answer: Option A. -> Tungsten carbide
Question 8. In electro discharge machining, tool is made of
  1.    Brass
  2.    Copper
  3.    Copper tungsten alloy
  4.    All of these
Explanation:-
Answer: Option D. -> All of these
Question 9. In a gating system, the ratio 1: 2: 4 represents
  1.    Sprue base area: runner area: ingate area
  2.    Pouring basin area: ingate area: runner area
  3.    Sprue base area: ingate area: casting area
  4.    Runner area: ingate area: casting area
Explanation:-
Answer: Option A. -> Sprue base area: runner area: ingate area
Question 10. The vector sum of cutting velocity and chip velocity is __________ shear velocity.
  1.    Equal to
  2.    Less than
  3.    More than
  4.    None of these
Explanation:-
Answer: Option A. -> Equal to
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