Workshop Technology MCQ Solved Paper for GMAT

1. Structural sections such as rails, angles, I-beams are made by
A. Hot rolling
B. Hot drawing
C. Hot piercing
D. Hot extrusion
Answer : A

2. A gimlet is a ________ tool.
A. Boring
B. Marking
C. Cutting
D. None of these
Answer : A

3. Loam sand is a mixture of
A. 30% sand and 70% clay
B. 50% sand and 50% clay
C. 70% sand and 30% clay
D. 90% sand and 10% clay
Answer : B

4. A taper provided on the pattern for its easy and clean withdrawal from the mould is known as
A. Machining allowance
B. Draft allowance
C. Shrinkage allowance
D. Distortion allowance
Answer : B

5. The metal is subjected to mechanical working for
A. Refining grain size
B. Reducing original block into desired shape
C. Controlling the direction of flow lines
D. All of these
Answer : D

6. Cores are used to
A. Form internal cavities in the casting
B. Improve mould surface
C. Form a part of a green sand mould
D. All of these
Answer : D

7. In electric resistance welding, pressure applied varies from
A. 1 to 5 MPa
B. 5 to 10 MPa
C. 10 to 25 MPa
D. 25 to 55 MPa
Answer : D

8. The purpose of a gate is to
A. Delivers molten metal into the mould cavity
B. Act as a reservoir for the molten metal
C. Feed the molten metal to the casting in order to compensate for the shrinkage
D. Delivers molten metal from pouring basin to gate
Answer : A

9. A hacksaw blade is specified by its
A. Length
B. Material
C. Width
D. Number of teeth
Answer : A

10. The parts of circular cross-section which are symmetrical about the axis of rotation are made by
A. Hot forging
B. Hot spinning
C. Hot extrusion
D. Hot drawing
Answer : B

11. If an aluminium pattern made from a wooden master pattern is to be used for grey iron castings, then the shrinkage allowance allowed on the wooden pattern should be
A. 10 mm/m
B. 16 mm/m
C. 20 mm/m
D. 26 mm/m
Answer : D

12. In welding copper alloys with TIG arc welding
A. Direct current with straight polarity is used
B. Direct current with reversed polarity is used
C. Alternating current is used
D. Any one of these
Answer : A

13. The blank diameter used in thread rolling will be
A. Equal to minor diameter of the thread
B. Equal to pitch diameter of the thread
C. A little larger than the minor diameter of the thread
D. A little larger than the pitch diameter of the thread
Answer : C

14. The recrystallisation temperature of steel is
A. 400°C
B. 600°C
C. 800°C
D. None of these
Answer : C

15. The purpose of a riser is to
A. Deliver molten metal into the mould cavity
B. Act as a reservoir for the molten metal
C. Feed the molten metal to the casting in order to compensate for the shrinkage
D. Deliver the molten metal from pouring basin to gate
Answer : C

16. During hot working of metals
A. Poor surface finish is produced
B. Scale is formed on the metal surface
C. Close tolerances cannot be maintained
D. All of these
Answer : D

17. Thermit welding is often used in
A. Replacing broken gear teeth
B. Repairing broken shears
C. Joining rails, truck frames and locomotive frames etc.
D. All of the above
Answer : D

18. The welding set up is said to have straight polarity, when
A. Work is connected to the positive terminal and the electrode holder to the negative terminal
B. Work is connected to the negative terminal and the electrode holder to the positive terminal
C. Work is connected to the positive terminal and the electrode holder is earthed
D. Work is connected to the negative terminal and the electrode holder is earthed
Answer : A

19. In a ________, two or more operations are performed simultaneously at the single stroke of the ram.
A. Simple die
B. Progressive die
C. Combination die
D. Compound die
Answer : B

20. For smoothing and cleaning out depressions in the mould, a __________ is used.
A. Slick
B. Lifter
C. Swab
D. Gagger
Answer : B

21. The adhesiveness is the property of sand due to which
A. It evolves a great amount of steam and other gases
B. The sand grains stick together
C. It clings to the sides of a moulding box
D. None of these
Answer : C

22. Swab is used for
A. Smoothing and cleaning out depressions in the mould
B. Cleaning the moulding sand
C. Moistening the sand around the edge before removing pattern
D. Reinforcement of sand in the top part of the moulding box
Answer : C

23. The operation of cutting of a flat sheet to the desired shape is called
A. Shearing
B. Piercing
C. Punching
D. Blanking
Answer : D

24. The temperature produced by oxy-hydrogen flame is about
A. 1800°C
B. 2100°C
C. 2400°C
D. 3200°C
Answer : C

25. A neutral flame is obtained by supplying
A. Equal volumes of oxygen and acetylene
B. More volume of oxygen and less volume of acetylene
C. More volume of acetylene and less volume of oxygen
D. None of the above
Answer : A

26. For welding plates of thickness more than 12.5 mm, its edges
A. Do not require bevelling
B. Should be bevelled to a single-V or U-groove
C. Should have a double-V or U-groove on one side
D. Should have a double-V or U-groove on both sides
Answer : D

27. In average work, the tolerance produced by investment casting method is
A. ±0.05 mm
B. +0.2 mm
C. +05 mm
D. +1 mm
Answer : A

28. In electric resistance welding, voltage required for heating is
A. 1 to 5 volts
B. 6 to 10 volts
C. 11 to 20 volts
D. 50 to 100 volts
Answer : B

29. Which of the following material can be used for making patterns?
A. Aluminium
B. Wax
C. Lead
D. All of these
Answer : D

30. The electron beam welding can be carried out in
A. Open air
B. A shielded gas environment
C. Vacuum
D. A pressurised inert gas chamber
Answer : C

31. The welding process used to join the ends of two pipes of uniform cross-section, is
A. Spot welding
B. Seam welding
C. Projection welding
D. Upset butt welding
Answer : D

32. In order to check the clearance between two mating surfaces, a ________ gauge should be used.
A. Ring
B. Plug
C. Feeler
D. None of these
Answer : C

33. When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as
A. Die casting method
B. Slush casting method
C. Permanent mould casting method
D. Centrifugal casting method
Answer : C

34. When the file is moved to and fro over the work, it is known as
A. Cross filing
B. Draw filing
C. Pull and push filing
D. None of these
Answer : B

35. In forehand welding, the weld is made
A. From left to right
B. From right to left
C. First from left to right and then from right to left
D. Either from left to right or from right to left
Answer : B

36. The centrifugal casting method, is used for casting articles of
A. Symmetrical shape about vertical axis
B. Symmetrical shape about horizontal axis
C. Irregular shape
D. Nonferrous metal only
Answer : B

37. The oxygen cylinder is usually painted with
A. Black colour
B. White colour
C. Maroon colour
D. Yellow colour
Answer : A

38. A moving mandrel is used in
A. Wire drawing
B. Tube drawing
C. Metal cutting
D. Forging
Answer : B

39. The cold chisels are made by
A. Drawing
B. Rolling
C. Piercing
D. Forging
Answer : D

40. The chisel used for cutting key ways is
A. Flat chisel
B. Cape chisel
C. Round nose chisel
D. Diamond pointed chisel
Answer : B

41. The most preferred process for casting gas turbine blades is
A. Die casting
B. Shell moulding
C. Investment moulding
D. Sand casting
Answer : B

42. Neutral flame is used to weld
A. Steel
B. Cast iron
C. Copper
D. All of these
Answer : D

43. Projection welding is a
A. Continuous spot welding process
B. Multi-spot welding process
C. Arc welding process
D. Process used for joining round bars
Answer : B

44. An oxidising process used for aluminium and magnesium articles is called
A. Galvanising
B. Anodising
C. Parkerising
D. Sherardizing
Answer : B

45. The fullers are used
A. For finishing flat surfaces
B. For necking down a piece of work
C. For punching a hole
D. To finish the punched hole
Answer : B

46. A file with 20 teeth in 25 mm is called
A. Rough file
B. Bastard file
C. Second cut file
D. Smooth file
Answer : A

47. For gas welding, the pressure desired at the welding torch for acetylene is
A. 7 to 103 kN/m²
B. 70 to 280 kN/m²
C. 280 to 560 kN/m²
D. 560 to 840 kN/m²
Answer : A

48. The process of increasing the cross-section of a bar at the expense of its length, is called
A. Drawing down
B. Upsetting
C. Spinning
D. Peening
Answer : B

49. A file removes the metal during
A. Forward stroke
B. Return stroke
C. Both forward and return strokes
D. None of these
Answer : A

50. A casting defect which results in general enlargement of a casting is known as
A. Shift
B. Sand wash
C. Swell
D. Scab
Answer : C