Workshop Technology Questions MCQs

Total Questions : 824

Page 1 of 42 pages
Question 1. 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
Answer: Option D
Explanation :
Question 2. The parts of circular cross-section which are symmetrical about the axis of rotation are made by
  1.     Hot forging
  2.     Hot spinning
  3.     Hot extrusion
  4.     Hot drawing
Answer: Option B
Explanation :
Question 3. Most of the oxyacetylene welding is done with
  1.     Neutral flame
  2.     Oxidizing flame
  3.     Carburising flame
  4.     All of these
Answer: Option A
Explanation :
Question 4. A ring gauge is used to
  1.     Check the diameter of shafts or studs
  2.     Test the accuracy of holes
  3.     Check the clearance between two mating surfaces
  4.     All of the above
Answer: Option A
Explanation :
Question 5. Metal patterns are used for
  1.     Small castings
  2.     Large castings
  3.     Complicated castings
  4.     Large scale production of castings
Answer: Option D
Explanation :
Question 6. In a gas welding of mild steel using an oxyacetylene flame, the total amount of acetylene consumed is 10 litres. the oxygen consumption from the cylinder is
  1.     5 litres
  2.     10 litres
  3.     15 litres
  4.     20 litres
Answer: Option B
Explanation :
Question 7. Which of the following material can be used for making patterns?
  1.     Aluminium
  2.     Wax
  3.     Lead
  4.     All of these
Answer: Option D
Explanation :
Question 8. 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
Answer: Option B
Explanation :
Question 9. The sand used for making cores is
  1.     Green sand
  2.     Dry sand
  3.     Loam sand
  4.     Oil sand
Answer: Option D
Explanation :
Question 10. Shift is a casting defect which
  1.     Results in a mismatching of the top and bottom parts of a casting
  2.     Results in general enlargement of a casting
  3.     Occurs near the ingates as rough lumps on the surface of a casting
  4.     Occurs as sand patches on the upper surface of a casting
Answer: Option A
Explanation :
Question 11. Sand wash is a casting defect which
  1.     Results in a mismatching of the top and bottom parts of a casting
  2.     Results in general enlargement of the casting
  3.     Occurs near the ingates as rough lumps on the surface of a casting
  4.     Occurs as sand patches on the upper surface of a casting
Answer: Option C
Explanation :
Question 12. Which of the following welding method uses a pool of molten metal?
  1.     Carbon arc welding
  2.     Submerged arc welding
  3.     TIG arc welding
  4.     MIG arc welding
Answer: Option B
Explanation :
Question 13. The chisel used for cutting key ways is
  1.     Flat chisel
  2.     Cape chisel
  3.     Round nose chisel
  4.     Diamond pointed chisel
Answer: Option B
Explanation :
Question 14. The temperature of oxy-hydrogen flame is ________ oxyacetylene flame.
  1.     Same as
  2.     Less than
  3.     More than
  4.     None of these
Answer: Option B
Explanation :
Question 15. The welding process used in joining mild steel shanks to high speed drills, is
  1.     Spot welding
  2.     Seam welding
  3.     Flash butt welding
  4.     Upset butt welding
Answer: Option C
Explanation :
Question 16. When a hole or cavity to be cored is not in line with the parting surface, then a ________ is used.
  1.     Horizontal core
  2.     Vertical core
  3.     Drop core
  4.     Balanced core
Answer: Option C
Explanation :
Question 17. A gimlet is a ________ tool.
  1.     Boring
  2.     Marking
  3.     Cutting
  4.     None of these
Answer: Option A
Explanation :
Question 18. For obtaining a cup of diameter 25 mm and height 15 mm by drawing, the size of the round blank should be approximately
  1.     42 mm
  2.     44 mm
  3.     46 mm
  4.     48 mm
Answer: Option C
Explanation :
Question 19. A gimlet is a ________ tool.
  1.     Boring
  2.     Marking
  3.     Cutting
  4.     None of these
Answer: Option A
Explanation :
Question 20. Which of the following statement is wrong?
  1.     The hot chamber die casting machine is used for casting zinc, tin, lead and other low melting alloys.
  2.     The cold chamber die casting machine is used for casting aluminium, magnesium, copper base alloys and other high melting alloys.
  3.     The castings produced by centrifugal casting method have open and coarse grained structure.
  4.     All of the above
Answer: Option C
Explanation :