Workshop Technology(Engineering > Mechanical Engineering ) Questions and Answers

Question 1. A taper provided on the pattern for its easy and clean withdrawal from the mould is known as
  1.    Machining allowance
  2.    Draft allowance
  3.    Shrinkage allowance
  4.    Distortion allowance
Explanation:-
Answer: Option B. -> Draft allowance
Question 2. A file with 20 teeth in 25 mm is called
  1.    Rough file
  2.    Bastard file
  3.    Second cut file
  4.    Smooth file
Explanation:-
Answer: Option A. -> Rough file
Question 3. Blanking and piercing operations can be performed simultaneously in a
  1.    Simple die
  2.    Progressive die
  3.    Compound die
  4.    Combination die
Explanation:-
Answer: Option C. -> Compound die
Question 4. The accuracy of micrometers, calipers, dial indicators can be checked by a
  1.    Feeler gauge
  2.    Slip gauge
  3.    Ring gauge
  4.    Plug gauge
Explanation:-
Answer: Option B. -> Slip gauge
Question 5. For welding plates of thickness less than 5 mm, its edges
  1.    Do not require bevelling
  2.    Should be bevelled to a single-V or U-groove
  3.    Should have a double-V or U-groove on one side
  4.    Should have a double-V or U-groove on both sides
Explanation:-
Answer: Option A. -> Do not require bevelling
Question 6. The current in electric resistance welding can be regulated by
  1.    Varying the input supply
  2.    Changing the primary turns of the transformer
  3.    Changing the secondary turns of the transformer
  4.    Any one of the above
Explanation:-
Answer: Option B. -> Changing the primary turns of the transformer
Question 7. In a bilateral system of tolerance, the tolerance is allowed on
  1.    One side of the actual size
  2.    One side of the nominal size
  3.    Both sides of the actual size
  4.    Both sides of the nominal size
Explanation:-
Answer: Option D. -> Both sides of the nominal size
Question 8. In a unilateral system of tolerance, the tolerance is allowed on
  1.    One side of the actual size
  2.    One side of the nominal size
  3.    Both sides of the actual size
  4.    Both sides of the nominal size
Explanation:-
Answer: Option B. -> One side of the nominal size
Question 9. Tandem drawing of wires and tubes is necessary because
  1.    It is not possible to reduce at one stage
  2.    Annealing is needed between stages
  3.    Accuracy in dimensions is not possible otherwise
  4.    Surface finish improves after every drawing stage
Explanation:-
Answer: Option B. -> Annealing is needed between stages
Question 10. Seam welding is best adopted for metal thickness ranging from
  1.    0.025 to 3 mm
  2.    3 to 5 mm
  3.    5 to 8 mm
  4.    8 to 10 mm
Explanation:-
Answer: Option A. -> 0.025 to 3 mm
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