Workshop Technology 1000+ MCQ with answer for IBPS RRB

1. 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

2. 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

3. 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

4. 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

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. The increase in hardness due to cold working, is called
A. Age hardening
B. Work hardening
C. Induction hardening
D. Flame hardening
Answer : B

7. 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

8. The maximum flame temperature occurs
A. At the outer cone
B. At the inner cone
C. Between the outer and inner cone
D. At the torch tip
Answer : B

9. 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

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

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

12. 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

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

14. 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

15. 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

16. 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

17. A ring gauge is used to
A. Check the diameter of shafts or studs
B. Test the accuracy of holes
C. Check the clearance between two mating surfaces
D. All of the above
Answer : A

18. 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

19. 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

20. 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

21. 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

22. 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

23. 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

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

25. 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

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

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

28. 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

29. Rotary swaging
A. Is extensively used for making bolts and rivets
B. Is used for reducing the diameters of round bars and a tube by rotating dies which open and close rapidly on the work
C. Is used to improve fatigue resistance of the metal by setting up compressive stresses in its surface
D. Consists of pressing the metal inside a chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part
Answer : B

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

31. 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

32. 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

33. 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

34. 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

35. 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

36. Sand wash 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 the 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 : C

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

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

39. In piercing 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 : B

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

41. 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

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. Lancing 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 : C

44. Most of the oxyacetylene welding is done with
A. Neutral flame
B. Oxidising flame
C. Carburising flame
D. All of these
Answer : A

45. The electrodes used in spot welding have a tip of
A. Stainless steel
B. Aluminium
C. Copper
D. Brass
Answer : C

46. In spot welding, the spacing between two spot weld should not be less than
A. d
B. 1.5 d
C. 3 d
D. 6 d
Answer : C

47. 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

48. 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

49. 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

50. 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