STEEL BOOSTER 14-06-2025 CONNECTIONS NEW

Untitled Lesson

By WINCENTRE CLASSES

Multiple Choice

The shear capacity of bolts is reduced

1. 1. When total thickness of connected plates exceeds 5 times the nominal diameter of bolts.

2. 2. When packing plates are more than 6mm thick

• Both the statements are true

• Statement 1 is true

• Statement 2 is true

• Shear capacity of bolt is evaluated without considering the abov efactors

Multiple Choice

Bolts are more suitable to carry

• Shear

• Bending

• Axial Tension

• Shear and Bending

Multiple Choice

In which of the following case we avoid bolted connection

• Connection subjected to fire

• Connection subjected to frequent earthquake load

• Connection subjected to snow load

• Connection subjected to corrosion problem

Multiple Choice

What is the maximum number of 20 mm diameter bolts that can be accommodated in a single row on a 140 mm wide flat strip used as one of the structural elements involved in the process?

• 5

• 4

• 3

• 2

Multiple Choice

Calculate the strength of 20 mm Φ bolt having a net tensile stress area = 245 mm2 with a partial safety factor of 1.25 and kb = 0.5 in single shear. Take the grade of bolt as 4.6 and minimum plate thickness is 10mm

• 82 KN

• 68.65 KN

• 45.27 Kn

• 33.89 KN

Multiple Choice

Prying forces are

• 
  Forces due to the friction between connected parts

  
  

• Bending forces on the bolts because of the joints

  
  

• 
  Shearing forces on the bolts because of joints

  
  

• Tensile forces due to the flexibility of connected parts

  
  

Multiple Choice

Butt weld is also known as

• Lap weld

• Fillet weld

• Groove weld

• All of these

Multiple Choice

A butt weld is specified by

• Effective Throat Thickness

• 
  plate thickness

  
  

• 
  size of weld

• 
  penetration thickness

  
  

Multiple Choice

The size of a butt weld is specified by the effective throat thickness which in the case of incomplete penetration, is taken as

• 1/2 of the thickness of thicker part

• 1/2 of the thickness of thinner part

• 7/8 of the thickness of thicker part

• 7/8 of the thickness of thinner part

Multiple Choice

The minimum length of butt weld shall be:

• equal to the thicker plate thickness

• Equal to the thinner plate thickness

• Two times the size of the weld

• Four times the size of weld

Multiple Choice

Match List I and List II and select the correct answer using the codes given below the lists:

• A-2, B-4, C-1, D-3

• A-1, B-3, C-2, D-4

• A-4, B-3, C-1, D-2

• A-1, B-4, C-3, D-2

Multiple Choice

The throat in a fillet weld is

• 
  Large side of the triangle of the fillet

• 
  Hypotenuse of the triangle of the fillet

  
  

• Small side of the triangle of the fillet

  
  

• 
  Perpendicular distance from the root to the hypotenus

Multiple Choice

Weakest section in a fillet weld is

• Throat of the fillet

• 
  Smaller side

• 
  Side parallel to force

• Side perpendicular to force

Multiple Choice

For standard 45 degree fillet weld the ratio of size of

fillet to throat thickness is

• 1:1

• 2:1

Multiple Choice

For the fillet weld of size s shown in the adjoining figure, the effective throat thickness is

• 0.61s

• 0.65s

• 0.70s

• 0.75s

Multiple Choice

What will be the Minimum size of fillet weld if the plate thickness is less than 10mm?

• 4mm

• 3mm

• 2mm

• 5mm

Multiple Choice

Maximum size of a fillet weld for a plate of square edge is

• 1.5 mm less than the thickness of the plate

• one half thickness of the plate

• thickness of the plate itself

• 1.5 mm more than the thickness of the plate

Multiple Choice

The effective length of a fillet weld of length L

and size S is given by

• 
  (Total length – 2 × throat size)

  
  

• (Total length – 2 × weld size)

  
  

• 
  (0.7 × Total length)

  
  

Multiple Choice

The effective section of a fillet weld is represented by a triangle as shown below with sides S₁, S₂ and S₃ Such that S₃ > S₂ > S₁. If the allowable shear stress in weld material is τ, the resistance of weld per unit length is 

Multiple Choice

A circular plate 100 mm diameter is welded to another plate by means of 6 mm fillet weld. If the permissible shearing stress in the weld equals 100 N/mm², then the greatest twisting moment that can be resisted by the weld will be

• $$4.242\pi\ kNm$$

• $$3\pi\ kNm$$

• $$2.1\pi\ kNm$$

• $$0.6\pi\ kNm$$