Workshop Technology MCQ Solved Paper for SSC CHSL

1. V-block is used to
A. Check the trueness of flat surfaces
B. Locate centres of round rods
C. Check the surface roughness
D. None of these
Answer : D

2. The flux commonly used in brazing is
A. Zinc chloride
B. Ammonium chloride
C. Rosin plus alcohol
D. Borax
Answer : D

3. Acetylene gas is stored in cylinders in
A. Solid form
B. Gaseous form
C. Liquid form
D. Any one of these
Answer : C

4. 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

5. The operation of cutting a cylindrical hole in a sheet of metal by the punch and die is called
A. Shearing
B. Piercing
C. Punching
D. Blanking
Answer : B

6. Blanking and piercing operations can be performed simultaneously in a
A. Simple die
B. Progressive die
C. Compound die
D. Combination die
Answer : C

7. In arc welding, the electric arc is produced between the work and the electrode by
A. Voltage
B. Flow of current
C. Contact resistance
D. All of these
Answer : C

8. Galvanising is a
A. Zinc diffusion process
B. Process of coating zinc by hot dipping
C. Process used for making thin phosphate coating on steel
D. None of the above
Answer : B

9. 4.Linde welding uses
A. Neutral flame and rightward technique
B. Oxidising flame and leftward technique
C. Neutral flame and leftward technique
D. Carburising flame and rightward technique
Answer : D

10. In ________ welding, the weld may be made either from left to right or from right to left.
A. Forehand
B. Backhand
C. Vertical
D. None of these
Answer : C

11. The type of file used for a wood work is
A. Single cut file
B. Double cut file
C. Rasp cut file
D. Any one of these
Answer : C

12. In backhand welding, the angle between the welding rod and the work is ________ as compared to forehand welding.
A. Same
B. Less
C. More
D. None of these
Answer : A

13. 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

14. The process used to improve fatigue resistance of the metal by setting up compressive stresses in its surface, is known as
A. Hot piercing
B. Extrusion
C. Cold peening
D. Cold heading
Answer : C

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

16. In TIG arc welding, the welding zone is shielded by an atmosphere of
A. Helium gas
B. Argon gas
C. Either (A) or (B)
D. None of these
Answer : C

17. Carburising flame is used to weld
A. Steel, cast iron, copper, aluminium etc
B. Brass and bronze
C. Hard surfacing materials such as stellite
D. All of these
Answer : C

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

19. The operation of producing cup shaped parts from flat sheet metal blanks by bending and plastic flow of metal, is known as
A. Drawing
B. Squeezing
C. Coining
D. Planishing
Answer : A

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

21. The dowels are
A. Wooden nails
B. Box nails
C. Wire nails
D. None of these
Answer : A

22. A mortise gauge is a
A. Striking tool
B. Planing tool
C. Boring tool
D. Marking tool
Answer : D

23. The surface to be left unmachined is marked on the pattern by
A. Red colour
B. Yellow colour
C. Black colour
D. Blue colour
Answer : C

24. When a pattern is made in three parts, the ________ is known as a drag.
A. Bottom part
B. Middle part
C. Top part
D. None of these
Answer : A

25. Which of the following methods can be used for manufacturing 2 metre long seamless metallic tubes?
A. Drawing
B. Extrusion
C. Rolling
D. Extrusion and rolling
Answer : D

26. In a cold chamber die casting machine, only nonferrous alloys with _________ are casted.
A. Low melting temperature
B. High melting temperature
C. Both (A) and (B)
D. None of these
Answer : B

27. In order to get uniform thickness of the plate by rolling process, one provides
A. Camber on the rolls
B. Offset on the rolls
C. Hardening of the rolls
D. Antifriction bearings
Answer : C

28. A sand employed on the faces of the pattern before moulding, is called
A. Green sand
B. Dry sand
C. Loam sand
D. Parting sand
Answer : D

29. Piercing is an operation of cutting
A. A cylindrical hole in a sheet of metal by the punch and the die
B. A hole (other than cylindrical) in a sheet of metal by the punch and the die
C. A flat sheet to the desired shape
D. A number of holes evenly spaced in a regular pattern on a sheet of metal
Answer : B

30. In die casting, machining allowance is
A. Small
B. Large
C. Very large
D. Not provided
Answer : D

31. The punch and die set up is ________ for punching and piercing operation.
A. Same
B. Similar
C. Different
D. None of these
Answer : B

32. For welding plates of thickness less than 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 : A

33. In forehand welding, the angle between the welding torch and the work is ________ as compared to backhand welding.
A. Same
B. Less
C. More
D. None of these
Answer : C

34. A diamond pointed chisel is used for cutting
A. Flat surfaces
B. Grooves
C. Keyways
D. V-shaped grooves
Answer : D

35. 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

36. In a unilateral system of tolerance, the tolerance is allowed on
A. One side of the actual size
B. One side of the nominal size
C. Both sides of the actual size
D. Both sides of the nominal size
Answer : B

37. During hot working of metals
A. Porosity of the metal is largely eliminated
B. Grain structure of the metal is refined
C. Mechanical properties are improved due to refinement of grains
D. All of the above
Answer : D

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

39. The minimum size of a bloom is
A. 5 cm × 5 cm
B. 10 cm × 10 cm
C. 15 cm × 15 cm
D. 20 cm × 20 cm
Answer : C

40. Metal patterns are used for
A. Small castings
B. Large castings
C. Complicated castings
D. Large scale production of castings
Answer : D

41. In a four high rolling mill, the diameter of backing up rolls is ________ the diameter of working rolls.
A. Equal to
B. Smaller than
C. Larger than
D. None of these
Answer : C

42. In a compound die
A. Only one operation is performed at each stroke of the ram
B. Two or more operations are performed simultaneously at the single stroke of the ram
C. Two or more cutting operations are performed at one station of the press in every stroke of the ram
D. Both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram
Answer : C

43. The operation of bending a sheet of metal along a curved axis, is known as
A. Plunging
B. Notching
C. Slitting
D. Forming
Answer : D

44. During drawing operation, the states of stress in cup would include
A. Compressive stress in the flange
B. Tensile stress in the wall
C. Both (A) and (B)
D. None of these
Answer : C

45. Shift is a casting defect which
A. Results in a mismatching of the top and bottom parts of a casting
B. Results in general enlargement of a casting
C. Occurs near the ingates as rough lumps on the surface of a casting
D. Occurs as sand patches on the upper surface of a casting
Answer : A

46. In spot welding, the distance between the nearest edge of the plate and centre of weld should be equal to
A. d
B. 1.5d
C. 3d
D. 6d
Answer : B

47. Riddle 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 moulding box
Answer : B

48. The tolerance produced by shell moulding process of casting is
A. +0.05 mm
B. ±0.2 mm
C. +0.5 mm
D. ±1 mm
Answer : B

49. Cast iron and steel pipes are produced by
A. Slush casting
B. Investment casting
C. True centrifugal casting
D. Die casting
Answer : C

50. In a centrifugal casting method
A. Core is made of sand
B. Core is made of ferrous metal
C. Core is made of nonferrous metal
D. No core is used
Answer : D