1000+ Workshop Technology MCQ for SBI Clerk [Solved]

1. 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

2. The sand used for making cores is
A. Green sand
B. Dry sand
C. Loam sand
D. Oil sand
Answer : D

3. 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

4. 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

5. 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

6. 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

7. 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

8. 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

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

10. The cold chisels are made from
A. Cast iron
B. Mild steel
C. High speed steel
D. Cast tool steel
Answer : D

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

12. In welding magnesium with TIG arc welding, direct current with _________ is used.
A. Straight polarity
B. Reversed polarity
C. Both (A) and (B)
D. None of these
Answer : B

13. 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

14. The instrument which has all the features of try-square, bevel protractor, rule and scriber, is
A. Outside micrometer
B. Inside micrometer
C. Depth gauge micrometer
D. Combination set
Answer : D

15. A two high rolling mill consists of two rolls which rotate
A. At the same speed and in the same direction
B. At the same speed but in opposite direction
C. At different speeds and in the same direction
D. At different speeds and in the opposite direction
Answer : B

16. A basic hole 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 : A

17. 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

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

19. In a hot chamber die casting machine
A. Ferrous alloys with low melting temperature are casted
B. Ferrous alloys with high melting temperature are casted
C. Nonferrous alloys with low melting temperature are casted
D. Nonferrous alloys with high melting temperature are casted
Answer : C

20. A rip saw
A. Is a two man saw
B. Is used for cutting along the grains of wood
C. Has a narrow blade with two wooden handles
D. All of the above
Answer : B

21. 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

22. 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

23. 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

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

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

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

27. The upsetting is a process of
A. Increasing the cross-section of a bar
B. Reducing the cross-section of a bar
C. Joining the two surfaces of metal under pressure after heating
D. Bending of a bar
Answer : A

28. 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

29. 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

30. In submerged arc welding, an arc is produced between a
A. Carbon electrode and the work
B. Metal electrode and the work
C. Bare metal electrode and the work
D. Two tungsten electrodes and the work
Answer : C

31. 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

32. 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

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

34. 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

35. Which of the following statement is wrong?
A. The angular clearance on dies varies from 0.5° to 1°
B. In drawing operation, the metal flows due to plasticity
C. In press operation, the size of the pierced hole is independent of the size of punch
D. None of the above
Answer : D

36. 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

37. 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

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

39. A three high rolling mill consists of three rolls placed one above the other. Which of the following statement is correct?
A. The upper and middle rolls rotate in the same direction whereas the bottom roll rotates in opposite direction
B. The upper and bottom rolls rotate in the same direction whereas the middle roll rotates in opposite direction
C. The bottom and middle roll rotate in the same direction
D. Any one of the above
Answer : B

40. 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

41. In a four high rolling mill, there are four rolls out of which
A. One is working roll and three are backing up rolls
B. Two are working rolls and two are backing up rolls
C. Three are working rolls and one is backing up roll
D. All of the four are working rolls
Answer : B

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

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

44. 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

45. 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

46. 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

47. The hot working of metals is carried out
A. At the recrystallisation temperature
B. Below the recrystallisation temperature
C. Above the recrystallisation temperature
D. At any temperature
Answer : C

48. In order to deliver molten metal from pouring basin to gate, a ________ is used.
A. Riser
B. Sprue
C. Core
D. None of these
Answer : B

49. 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

50. 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