Welding Multiple Choice Questions - Set 03 - ObjectiveBooks

# Practice Test: Question Set - 03

1. Lowest value of joint efficiency is assumed in case of
(A) Single riveted butt joint
(B) Double riveted lap joint
(C) Double riveted butt joint
(D) Single riveted lap joint

2. Rivets are usually made of
(A) High carbon steel
(B) Alloy steel
(C) Cast iron
(D) Mild steel

3. In butt joint, the size of weld is equal to
(A) 0.5 × throat of weld
(B) Throat of weld
(C) 2 × throat of weld
(D) √2 × throat of weld

4. Pan Head rivets are used in
(A) Ship hulls
(B) Light sheet metal work
(C) Structural work
(D) Air conditioning ducts

5. The size of a fillet weld is given by,
(A) Throat of fillet
(B) Smaller side of triangle
(C) Hypotenuse of triangle
(D) Bigger side of triangle

6. According to Unwin’s formula, the relationship between the diameter of rivet (d) and thickness of cylinder wall (t) is
(A) d = 5√t
(B) d = 6√t
(C) d = 1.6√t
(D) d = √t

7. The edges of boiler plates are beveled at an angle of 700 to 750 for
(A) Caulking and fullering
(B) Safety
(C) To facilitate riveting
(D) To reduce stress concentration

8. The shear resistance of one rivet in double shear is
(A) 2.5 times its resistance in single shear
(B) Two times its resistance in single shear
(C) 1.875 times its resistance in single shear
(D) 1.5 times its resistance in single shear

9. The purpose of longitudinal butt joint in boiler shell is
(A) To make cylindrical ring from steel plate
(B) To increase the length of boiler shell by connecting one ring to another
(C) To make diameter and length of boiler shell
(D) To connect openings to shell

10. In transverse fillet welded joint, the size of weld is equal to
(A) 0.5 × throat of weld
(B) Throat of weld
(C) 2 × throat of weld
(D) √2 × throat of weld

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