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WELDED JOINTS MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

WELDED JOINTS

MULTIPLE CHOICE QUESTIONS

(MCQ) WITH ANSWERS 

MCQ on Welded joints increase

knowledge tremendously. Welded joints

are permanent joints. Welded joints are used

in numerous applications.

Fig. Standard Welded Joints & Their Symbols

Fig. Welding Symbol

Fig. Representation of Welding Symbol
(i) Welding symbol placed below the body line represents welding on near side of arrow of welding symbol
(ii) Welding symbol placed above the body line represents welding on far side of arrow of welding symbol

(iii)Welding symbol placed above & below the body line represents welding on near and far sides of arrow of welding symbol

  1. Strength of a welded joint increases by radio graphing by

  1. 10 %

  2. 12%

  3. 15%

  4. None

Ans: (ii)

  1.  Welded joint strength increases due to annealing by

  1. 6%

  2. 10%

  3. 14%

  4. None

Ans: (i)

  1. Why are butt welded joints longitudinal joints ?

  1. High strength requirements

  2. Low strength requirements

  3. Low as well as high strength requirements

  4. None

Ans: (i)

  1.  Lap welded joints used in circumferential joints because of ?

  1. High strength requirements

  2. Low strength requirements

  3. Low as well as high strength requirements

  4. None

Ans: (ii)

  1. Longitudinal welded joint fails by

  • Longitudinal stress

  • Radial stress

  • Hoop stress

  • None

Ans: (iii)

  1. Circumferential welded joint fails by

  1. Longitudinal stress

  2. Radial stress

  3. Hoop stress

  4. None

Ans: (i)

  1.  Single full fillet welded joint cannot  be used for a plate thickness greater than

  1. 1/8”

  2. 2/8”

  3. 3/8”

  4. None

Ans: (iii)

  1.  Double full fillet welded joint cannot  be used for a plate thickness greater than

  1. 1/8”

  2. 3/8”

  3. 5/8”

  4. None

Ans: (iii)

  1. Out of the followings, which welded joint is more stronger

(i) Butt joint

(ii) Lap joint

(iii)Screwed joint

(iv) None

Ans: (i)

  1. In which case, molten metal is used to do welding?

(i) Groove type

(ii) spot type

(iii) Plug type

(iv) None

Ans: (iii)

  1. A weld symbol is necessary because of

(i) Aesthetic sense

(ii) Finishing

(iii) Manufacturing

(iv) None

Ans: (iii)

  1. Different parts of a weld symbol are

(i) Arrow, center line and back part

(ii) Arrow, body line and length

(iii) Arrow, body line and tail

(iv)None

Ans: (iii)

  1.  Joint which does not fall under lap joint category

(i)Transverse fillet

(ii) Parallel fillet

(iii) Circular fillet

(iv) None

Ans: (iv)

  1. Choose which is not a lap joint?

(i) Single V

(ii) Double V

(iii) Single U

(iv) None

Ans: (iv)

  1. Quantity which is not a part of the weld symbol

(i)Length of welding

(ii) Weld is made in the welding shop

(iii) Welding is on both sides

(iv) Machine used in welding

Ans: (iv)

  1. Term which is not a part of the weld symbol

(i) Tail

(ii) Arrow

(iii) Temperature of welding

(iv) None

Ans: (iii)

  1. Quantity is not a part of the weld symbol

(i)Dark circle

(ii) Open circle

(iii) Angle of weld

(iv)Starting and stopping allowance for welding

Ans: (iv)

  1.  Type of welded joint which do not exit

(i) Groove type

(ii) Spot type

(iii)Plug type

(iv) Surface type

Ans: (iv)

  1. Term which is not applicable to a welded joint

(i) Higher efficiency

(ii)Easy process

(iii) Faster process

(iv) None

Ans: (ii)

  1. One which is applicable to a welded joint

(i)Less rigidity

(ii) Heavy

(iii) Difficult process

(iv) None

Ans: (iv)

  1. Projection welding is

(i) Electric arc welding

(ii) Gas welding

(iii)Spot welding

(iv) None

Ans: (iv)

  1. Internal defects in a welded joint can be found by a process called

(i) Tension test

(ii) Visual inspection

(iii) Radio graphing

(iv) None

Ans: (iii)

24. Parallel fillet welds are under

  • Shear and bending stresses

  • Compressive and torsion shear stresses

  • Tensile and compressive stresses

  • None

Ans: (iv)

25.Butt welds are under

(i) Shear stress

(ii) Compressive stress

(iii) Tensile stress

(iv)None

Ans: (iii)

26. Area under tension in a single transverse fillet lap weld is

(i)0.707 tl

(ii) 0.807 tl

(iii) 400 tl

(iv)None

Ans: (i)

27. By overlapping the plates, which type of welded joint is made

(i) Fillet welded joint

(ii) Butt welded joint

(iii) Fillet-Butt welded joint

(iv) None

Ans: (i)

28. The name of the welded joint made by placing the plates edge to edge is

(i) Fillet welded joint

(ii) Butt welded joint

(iii) Fillet-Butt welded joint

(iv) None

Ans: (ii)

29.The advantage of a welded joint over a riveted joint is

(i) Introduce residual stresses

(ii) Requires highly skilled labor and supervision

(iii) Lighter in weight

(iv) None

Ans: (iii)

30.Transverse fillet welds are under

(i) Shear stress

(ii) Compressive stress

(iii) Tensile stress

(iv)None

Ans: (iii)

31. Transverse fillet welds are under

(i)  Bending and shear stresses

(ii)Compressive and torsion shear stresses

(iii)Tensile and compressive stresses

(iv)None

Ans: (iv)

32. Parallel fillet welds are under

(i) Shear stress

(ii)Compressive stress

(iii)Tensile stress

(iv)None

Ans: (i)

33. Welded joint used in the longitudinal joint of a cylindrical pressure vessel is

(i) Butt joint

(ii) Lap joint

(iii)Screwed joint

(iv) None

Ans: (i)

34. Which  welded joint used in the circumferential joint of a cylindrical pressure vessel is

(i) Butt joint

(ii) Lap joint

(iii)Screwed joint

(iv) None

Ans: (ii)

    34. Efficiency of a welded joint with respect to a riveted joint is

  1. Smaller

  2. Equal

  3. Greater

  4. None

ANS: (c )

    35. The welded structure with respect to riveted structure is

  1. Heavier

  2. Lighter

  3. Same

  4. None

ANS: (b)

    36. The strength of a welded joint with respect to a riveted joint is

  1. Greater

  2. Smaller

  3. Equal

  4. None

ANS: (a)

    37. Changes in a welded structure are

  1. Easier

  2. Difficult

  3. Easier & difficult

  4. None

ANS: (a)

    38. Welded structures with respect to riveted joint is

  1. Weakened in tension

  2. Strengthened in tension

  3. No change in tension strength

  4. None

ANS: (c )

    39. Welded joints are

  1. Hinged joint

  2. Rigid joint

  3. Freely supported joint

  4. None

ANS: (b)

    40. Process of welding with respect to riveting takes

  1. More time

  2. Less time

  3. Same time

  4. None

ANS: (b)

    41. Welded joints require

  1. Punching of holes

  2. Drilling of holes

  3. Punching & Drilling of holes

  4. None

ANS: (d)

    42. Welded structures with to riveted structures for a certain load are

  1. Heavier

  2. Lighter

  3. Same weight

  4. None

ANS: (b)

    43. Appearance of welded structures with respect to riveted structures is

  1. Smooth

  2. Rough

  3. Same

  4. None

ANS: (a)

    44. Welding requires

  1. Non-skilled worker

  2. Skilled worker

  3. Any worker

  4. None

ANS: (b)

    45. Heating and cooling in welding is

  1. Even

  2. Non-even

  3. Cannot say

  4. None

ANS:(b)

    46. Inspection of welded joints with respect to riveted joints is

  1. Difficult

  2. Easier

  3. Cannot say

  4. None

ANS:(a)

    47. Lap welded joints are

  1. Rectangular

  2. Square

  3. Triangular

  4. None

ANS: (c )

    48. Length of throat of a fillet weld is

  1. 0.505 x leg

  2. 0.707x leg

  3. 0.909x leg

  4. None

ANS: (b)

    49. The angle of a fillet weld is

  1. 600

  2. 300

  3. 900

  4. None

ANS: (d)

    50. The angle of a fillet weld is

  1. 200

  2. 400

  3. 450

  4. None

ANS: (c )

    51. Fillet weld is a

  1. Square

  2. Rectangular

  3. Triangular

  4. None

ANS: (c )

    52. Plug weld is

  1. Rectangular

  2. Square

  3. Triangular

  4. None

ANS: (d)

    53. The angle of V-welded joint in a pressure vessel

  1. 30 to 450

  2. 40 to 550

  3. 55 to 700

  4. None

ANS: (c )

https://www.mesubjects.net/wp-admin/post.php?post=6195&action=edit          MCQ Riveted joints

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