FCI Recruitment - Workshop Technology 1000+ MCQ [Solved] PDF Download

1. A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as
A. Shift
B. Sand wash
C. Swell
D. Scab
Answer : B

2. In order to ram the sand harder at the back of the mould and softer on the pattern face, a ________ is used.
A. Sand slinger
B. Squeezing machine
C. Jolt machine
D. Stripper plate machine
Answer : B

3. 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

4. In a gas welding of mild steel using an oxyacetylene flame, the total amount of acetylene consumed is 10 litres. The oxygen consumption from the cylinder is
A. 5 litres
B. 10 litres
C. 15 litres
D. 20 litres
Answer : B

5. A casting defect which results in general enlargement of a casting is known as
A. Shift
B. Sand wash
C. Swell
D. Scab
Answer : C

6. For arc welding
A. Alternating current with high frequency is used
B. Alternating current with low frequency is used
C. Direct current is used
D. Any one of these
Answer : C

7. A hacksaw blade cuts on the
A. Forward stroke
B. Return stroke
C. Both forward and return strokes
D. Cutting depends upon the direction of force
Answer : A

8. 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

9. 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

10. 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

11. 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

12. 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

13. 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

14. 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

15. 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

16. The parts of circular cross-section which are symmetrical about the axis of rotation are made by
A. Hot forging
B. Hot spinning
C. Hot extrusion
D. Hot drawing
Answer : B

17. The draft or taper allowance on casting is generally
A. 1 to 2 mm/m
B. 2 to 5 mm/m
C. 5 to 10 mm/m
D. 10 to 15 mm/m
Answer : A

18. In permanent mould casting method
A. Molten metal is poured in a metallic mould, retained in the mould long enough for the outer skin to solidify and finally mould is turned over to remove molten metal still in molten condition
B. Molten metal is poured and allowed to solidify while the mould is revolving
C. Molten metal is forced into mould under high pressure
D. None of the above
Answer : D

19. 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

20. When the dimension is expressed as 20 -0.025 ????³?, then the basic size is
A. 20 mm
B. 20.035 mm
C. 20.025 mm
D. 19.975 mm
Answer : A

21. 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

22. 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

23. For gas welding, the pressure desired at the welding torch for oxygen 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 : B

24. 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

25. 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

26. 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

27. 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

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

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

30. 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

31. 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

32. 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

33. 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

34. 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

35. 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

36. 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

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

38. When more volume of acetylene and less volume of oxygen is supplied, then a ________ flame is obtained.
A. Neutral
B. Oxidising
C. Carburising
D. None of these
Answer : C

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

40. In shielded arc welding
A. Large electrode is used
B. Welding rod coated with slag is used
C. Welding rod coated with fluxing material is used
D. None of the above
Answer : C

41. When a hole or cavity to be cored is not in line with the parting surface, then a ________ is used.
A. Horizontal core
B. Vertical core
C. Drop core
D. Balanced core
Answer : C

42. For obtaining a cup of diameter 25 mm and height 15 mm by drawing, the size of the round blank should be approximately
A. 42 mm
B. 44 mm
C. 46 mm
D. 48 mm
Answer : C

43. Which of the following statement is wrong?
A. The hot chamber die casting machine is used for casting zinc, tin, lead and other low melting alloys.
B. The cold chamber die casting machine is used for casting aluminium, magnesium, copper base alloys and other high melting alloys.
C. The castings produced by centrifugal casting method have open and coarse grained structure.
D. All of the above
Answer : C

44. 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

45. 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

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

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. 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. In electric resistance welding, voltage required for heating is
A. 1 to 5 volts
B. 6 to 10 volts
C. 11 to 20 volts
D. 50 to 100 volts
Answer : B

50. Seam 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 : A