Related Questions

The ultimate tensile stress of mild steel compared to ultimate compressive stress is
A Same
B More
C Less
D Unpredictable
In a tensile test on mild steel specimen, the breaking stress as compared to ultimate tensile stress is
A More
B Less
C Same
D More/less depending on composition
The change in length due to a tensile or compressive force acting on a body is given by (where P = Tensile or compressive force acting on the body, $$l$$ = Original length of the body, A = Cross-sectional area of the body and E = Young's modulus for the material of the body)
A $$\frac{{{\text{P}}l{\text{A}}}}{{\text{E}}}$$
B $$\frac{{{\text{P}}l}}{{{\text{AE}}}}$$
C $$\frac{{\text{E}}}{{{\text{P}}l{\text{A}}}}$$
D $$\frac{{{\text{AE}}}}{{{\text{P}}l}}$$
The allowable tensile stress in structural mild steel plates for steel tank is assumed as
A 95.0 MPa on net area
B 105.5 MPa on net area
C 105.5 MPa on gross area
D 150.0 MPa on gross area
The allowable static stress for steel gears is approximately __________ of the ultimate tensile stress.
A One-fourth
B One-third
C One-half
D Double
The allowable tensile stress in mild steel stirrups, reinforced cement concrete, is
A 1400 kg/cm2
B 190 kg/cm2
C 260 kg/cm2
D 230 kg/cm2
The cutting speed for drilling aluminium, brass and bronze with carbon steel drills is _________ cutting speed for drilling mild steel with high speed steel drills.
A Equal to
B Less than
C More than
D None of these
When an open coiled helical compression spring is subjected to an axial compressive load, the maximum shear stress induced in the wire is (where D = Mean diameter of the spring coil, d = Diameter of the spring wire, K = Wahl's stress factor and W = Axial compressive load on the spring)
A $$\frac{{{\text{WD}}}}{{\pi {{\text{d}}^3}}} \times {\text{K}}$$
B $$\frac{{2{\text{WD}}}}{{\pi {{\text{d}}^3}}} \times {\text{K}}$$
C $$\frac{{4{\text{WD}}}}{{\pi {{\text{d}}^3}}} \times {\text{K}}$$
D $$\frac{{8{\text{WD}}}}{{\pi {{\text{d}}^3}}} \times {\text{K}}$$
A tensile test is performed on a mild steel round bar. Its diameter after fracture will
A Remain same
B Increase
C Decrease
D Depend upon rate of loading
Tensile strength of a mild steel specimen can be roughly predicted from following hardness test
A Brinell
B Rockwell
C Vickers
D None of the above

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