1000+ Workshop Technology Multiple Choice Question Answer [Solved]

1. A pattern maker's shrinkage rule considers
A. All pattern allowances
B. Only shrinkage allowance
C. All materials to be cast
D. All materials of the pattern
Answer : B

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

3. 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

4. The advantage of Thermit welding is that
A. All parts of the weld section are molten at the same time
B. Weld cools almost uniformly
C. Results in a minimum problem with internal residual stresses
D. All of the above
Answer : D

5. 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

6. During cold working process
A. Grain structure is distorted
B. Strength and hardness of metal increases
C. Close dimensional tolerance can be maintained
D. All of the above
Answer : D

7. In a _________, the molten metal is poured and allowed to solidify while the mould is revolving.
A. Die casting method
B. Slush casting method
C. Permanent mould casting method
D. Centrifugal casting method
Answer : D

8. The temperature of the inner luminous cone of neutral flame is about
A. 1000°C
B. 1250°C
C. 2100°C
D. 3200°C
Answer : D

9. 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

10. The directional solidification in casting can be improved by using
A. Chills and chaplets
B. Chills and padding
C. Chaplets and padding
D. Chills, chaplets and padding
Answer : B

11. 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

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

13. The cutting edge of a chisel should be
A. Hardened
B. Tempered
C. Hardened and tempered
D. Case hardened
Answer : C

14. 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

15. Which of the following welding process uses non-consumable electrodes?
A. TIG welding
B. MIG welding
C. Manual arc welding
D. Submerged arc welding
Answer : A

16. The binder commonly used in making oil sand, is
A. Clay type binder
B. Organic type binder
C. Inorganic type binder
D. Any one of these
Answer : B

17. Which one of the following material will require the largest size of riser for the same size of casting?
A. Aluminium
B. Cast iron
C. Steel
D. Copper
Answer : C

18. Which of the following welding method uses a pool of molten metal?
A. Carbon arc welding
B. Submerged arc welding
C. TIG arc welding
D. MIG arc welding
Answer : B

19. The temperature at which the new grains are formed in the metal is called
A. Lower critical temperature
B. Upper critical temperature
C. Eutectic temperature
D. Recrystallisation temperature
Answer : D

20. The metal extrusion process is generally used for producing
A. Uniform solid sections
B. Uniform hollow sections
C. Uniform solid and hollow sections
D. Varying solid and hollow sections
Answer : C

21. The operation of straightening a curved sheet metal, is known as
A. Drawing
B. Squeezing
C. Coining
D. Planishing
Answer : D

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

23. 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

24. Cold working of metal increases
A. Tensile strength
B. Yield strength
C. Hardness
D. All of these
Answer : D

25. In blanking operation, the clearance is provided on
A. Punch
B. Die
C. Half on the punch and half on the die
D. Either on punch or die depending upon designer's choice
Answer : A

26. The welding process used in joining mild steel shanks to high speed drills, is
A. Spot welding
B. Seam welding
C. Flash butt welding
D. Upset butt welding
Answer : C

27. In sheet metal work, he cutting force on the tool can be reduced by
A. Grinding the cutting edges sharp
B. Increasing the hardness of tool
C. Providing shear on tool
D. Increasing the hardness of die
Answer : A

28. The machining allowance provided on patterns depends upon
A. Type of casting metal
B. Size and shape of casting
C. Method of casting used
D. All of these
Answer : D

29. 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

30. The algebraic difference between the maximum limit and the basic size is called
A. Actual deviation
B. Upper deviation
C. Lower deviation
D. Fundamental deviation
Answer : B

31. The property of sand due to which it evolves a great amount of steam and other gases is called
A. Collapsibility
B. Permeability
C. Cohesiveness
D. Adhesiveness
Answer : B

32. The cross-section of a chisel is usually
A. Rectangular
B. Square
C. Hexagonal
D. Octagonal
Answer : D

33. In a _________, both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram.
A. Simple die
B. Progressive die
C. Combination die
D. Compound die
Answer : C

34. 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

35. 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

36. In forehand welding, the angle between the welding rod and the work is kept as
A. 30°-40°
B. 40°-50°
C. 50°-60°
D. 60°-70°
Answer : A

37. 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

38. 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

39. The electrode tip diameter (d) in spot welding should be equal to (where t = Thickness of plate to be welded)
A. t
B. 1.5 t
C. 3 t
D. 6 t
Answer : A

40. The diaphragm moulding machine is used to
A. Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould
B. Ram the sand harder at the back of the mould and softer on the pattern face
C. Produce uniform packing of sand in the mould
D. Give uniform sand hardness throughout the mould
Answer : D

41. The difference between the upper limit and lower limit of a dimension is called
A. Nominal size
B. Basic size
C. Actual size
D. Tolerance
Answer : D

42. 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

43. 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

44. Seam welding is best adopted for metal thickness ranging from
A. 0.025 to 3 mm
B. 3 to 5 mm
C. 5 to 8 mm
D. 8 to 10 mm
Answer : A

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

46. Notching is the operation of
A. Cutting a sheet of metal in a straight line along the length
B. Removal of metal to the desired shape from the edge of a plate
C. Cutting a sheet of metal through part of its length and then bending the cut portion
D. Bending a sheet of metal along a curved axis
Answer : B

47. 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

48. For cutting brass, the hacksaw blade should have __________ teeth per 25 mm.
A. 14
B. 24
C. 32
D. 40
Answer : A

49. In sheet metal blanking, shear is provided on punches and dies so that
A. Press load is reduced
B. Good cut edge is obtained
C. Warping of sheet is minimised
D. Cut blanks is straight
Answer : A

50. The accuracy of micrometers, calipers, dial indicators can be checked by a
A. Feeler gauge
B. Slip gauge
C. Ring gauge
D. Plug gauge
Answer : B