1000+ Workshop Technology MCQ for IIFT [Solved]

1. 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

2. 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

3. In a bilateral 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 : D

4. 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

5. 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

6. The oxygen cylinder is usually painted with
A. Black colour
B. White colour
C. Maroon colour
D. Yellow colour
Answer : A

7. Swab is used for
A. Smoothing and cleaning out depressions in the mould
B. Cleaning the moulding sand
C. Moistening the sand around the edge before removing pattern
D. Reinforcement of sand in the top part of the moulding box
Answer : C

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

9. 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

10. 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

11. Green 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 : C

12. 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

13. 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

14. 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

15. 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

16. In backhand welding, the angle between the welding rod and the work is ________ as compared to forehand welding.
A. Same
B. Less
C. More
D. None of these
Answer : A

17. The brass and bronze are welded by _________ flame.
A. Neutral
B. Oxidising
C. Carburising
D. All of these
Answer : B

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

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

20. In a four high rolling mill, the diameter of backing up rolls is ________ the diameter of working rolls.
A. Equal to
B. Smaller than
C. Larger than
D. None of these
Answer : C

21. 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

22. 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

23. 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

24. The material which can be best cut with oxygen cutting process is
A. Mild steel
B. Brass
C. Copper
D. Aluminium
Answer : A

25. 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

26. 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

27. To prevent the body of the blade from jamming in the saw cut, the teeth of blade are
A. Strengthened
B. Sharpened
C. Set
D. All of these
Answer : C

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

29. 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

30. 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

31. 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

32. Shift 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 a 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 : A

33. Cast iron and steel pipes are produced by
A. Slush casting
B. Investment casting
C. True centrifugal casting
D. Die casting
Answer : C

34. 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

35. 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

36. A zinc diffusion process is called
A. Galvanising
B. Anodising
C. Parkerising
D. Sherardizing
Answer : D

37. 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

38. 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

39. 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

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

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

42. 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

43. According to Indian standard specifications, 100 H6/g 5 means that.
A. Basic size is 100 mm
B. Actual size is 100 mm
C. Difference between the actual size and basic size is 100 mm
D. None of the above
Answer : A

44. Scribing block is used to
A. Hold the round bars during marking
B. Check the trueness of flat surfaces
C. Locate the centres of round bars
D. Check the surface roughness
Answer : C

45. In order to produce uniform packing of sand in the moulds, a __________ is used.
A. Sand slinger
B. Squeezing machine
C. Jolt machine
D. Stripper plate machine
Answer : A

46. 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

47. 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

48. 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

49. 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

50. Riddle is used for
A. Smoothing and cleaning out depressions in the mould
B. Cleaning the moulding sand
C. Moistening the sand around the edge before removing pattern
D. Reinforcement of sand in the top part of moulding box
Answer : B