** Question No : 15**

The tensile strength of the welded joint for double fillet is (where s = Leg or size of the weld, l = Length of weld, and σt = Allowable tensile stress for weld metal)

0.5 s.l.σ_{t}

s.l.σ_{t}

√2 s.l.σ_{t}

2.s.l.σt

** Question No : 16**

A fletched beam is used to

Change the shape of the beam

Effect the saving in material

Equalise the strength in tension and compression

Increase the cross-section of the beam

** Question No : 17**

When a body is subjected to three mutually perpendicular stresses, of equal intensity, the ratio of direct stress to the corresponding volumetric strain is known as

Young's modulus

Modulus of rigidity

Bulk modulus

Poisson's ratio

** Question No : 18**

The ratio of maximum shear stress developed in a rectangular beam and a circular beam of the same cross-sectional area is

2/3

3/4

1

9/8

** Question No : 19**

The ratio of direct stress to volumetric strain in case of a body subjected to three mutually perpendicular stresses of equal intensity, is equal to

Young's modulus

Bulk modulus

Modulus of rigidity

Modulus of elasticity

** Question No : 20**

The ultimate tensile stress of mild steel compared to ultimate compressive stress is

Same

More

Less

Unpredictable

** Question No : 21**

The limit of eccentricity for no tensile conditions for a column of circular section of diameter (D) is

d/4

d/8

d/12

d/16