1000+ Workshop Technology MCQ for ESIC [Solved]

1. 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

2. 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

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

4. 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

5. 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

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

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

8. The oxyacetylene gas used in gas welding produce a flame temperature of
A. 1800°C
B. 2100°C
C. 2400°C
D. 3200°C
Answer : D

9. 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

10. 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

11. 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

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

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

14. 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

15. 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

16. 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

17. The edge of a steel plate cut by oxygen cutting will get hardened when the carbon content is
A. Less than 0.1 percent
B. Less than 0.3 percent
C. More than 0.3 percent
D. Anywhere between 0.1 to 1 percent
Answer : C

18. When a pattern is made in three parts, the top part, is known as a
A. Drag
B. Cheek
C. Cope
D. None of these
Answer : C

19. 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

20. 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

21. When the dimension is expressed as, then the tolerance is
A. 0.035 mm
B. 0.025 mm
C. 0.01 mm
D. 0.06 mm
Answer : D

22. 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

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

24. A basic shaft is one whose
A. Lower deviation is zero
B. Upper deviation is zero
C. Lower and upper deviations are zero
D. None of these
Answer : B

25. 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

26. Lap joints are employed on plates having thickness
A. Less than 3 mm
B. 5 to 10 mm
C. 12.5 mm
D. Above 25 mm
Answer : A

27. 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

28. When filing soft metals, the file teeth are clogged with minute particles of metal. The file should be cleaned by
A. Washing it with water
B. Rubbing on wood
C. Washing it with dilute acid
D. Using file card
Answer : D

29. The operation of cutting a sheet of metal in a straight line along the length, is known as
A. Plunging
B. Notching
C. Slitting
D. Forming
Answer : C

30. 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

31. The property of sand due to which the sand grains stick together is called
A. Collapsibility
B. Permeability
C. Cohesiveness
D. Adhesiveness
Answer : C

32. 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

33. A progressive limit gauge has
A. 'Go' and 'Not go' member on the same side of the gauge
B. Separate 'Go' and 'Not go' members
C. 'Go' member at one end and 'Not go' member at the other end
D. None of the above
Answer : A

34. 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

35. 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

36. Thermit, used in Thermit welding, is a mixture of
A. Charcoal and iron oxide
B. Charcoal and aluminium
C. Iron oxide and aluminium
D. Charcoal, iron oxide and aluminium
Answer : C

37. 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

38. 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

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

40. The process extensively used for making bolts and nuts is
A. Hot piercing
B. Extrusion
C. Cold peening
D. Cold heading
Answer : D

41. 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

42. Tandem drawing of wires and tubes is necessary because
A. It is not possible to reduce at one stage
B. Annealing is needed between stages
C. Accuracy in dimensions is not possible otherwise
D. Surface finish improves after every drawing stage
Answer : B

43. 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

44. 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

45. 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

46. 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

47. 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

48. 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

49. 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

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