The stress developed in a material at breaking point in extension is called__________?A. Breaking stress
B. Fracture stress
C. Yield point stress
D. Proof stress
B. Fracture stress
C. Yield point stress
D. Proof stress
Strength of Materials
Hooke’s law holds good up to____________________?
Hooke’s law holds good up to____________________?
A. yield point
B. limit of proportionality
C. breaking point
D. elastic limit
E. plastic limit
The unit of Young’s modulus is__________________?
The unit of Young’s modulus is__________________?
A. mm/mm
B. kg/cm
C. kg
D. kg/cm2
E. kg cm2
It equal and opposite forces applied to a body tend to elongate it, the stress so produced is called______________________?
It equal and opposite forces applied to a body tend to elongate it, the stress so produced is called______________________?
A. internal resistanpe
B. tensile stress
C. transverse stress
D. compressive stress
E. working stress
Modulus of rigidity is defined as the ratio of_________________?
Modulus of rigidity is defined as the ratio of_________________?
A. longitudinal stress and longitudinal strain
B. volumetric stress and volumetric strain
C. lateral stress and lateral strain
D. shear stress and shear strain
E. linear stress and lateral strain
The ultimate tensile stress of mild steel compared to ultimate compressive stress is__________________?
The ultimate tensile stress of mild steel compared to ultimate compressive stress is__________________?
A. same
B. more
C. less
D. more or less depending on other factors
E. unpredictable
A thin mild steel wire is loaded by adding loads in equal increments till it breaks. The extensions noted with increasing loads will behave as under_________________?
A thin mild steel wire is loaded by adding loads in equal increments till it breaks. The extensions noted with increasing loads will behave as under_________________?
A. uniform throughout
B. increase uniformly
C. first increase and then decrease
D. increase uniformly first and then increase rapidly
E. increase rapidly first and then uniformly
If the radius of wire stretched by a load is doubled, then its Young’s modulus will be_______________?
If the radius of wire stretched by a load is doubled, then its Young’s modulus will be_______________?
A. doubled
B. halved
C. become four times
D. become one-fourth
E. remain unaffected
Tensile strength of a material is obtained by dividing the maximum load during the test by the_________________?
Tensile strength of a material is obtained by dividing the maximum load during the test by the_________________?
A. area at the time of fracture
B. original cross-sectional area
C. average of A. and B.
D. minimum area after fracture
E. none of the above.
The Young’s modulus of a wire is defined as the stress which will increase the length of wire compared to its original length________________?
The Young’s modulus of a wire is defined as the stress which will increase the length of wire compared to its original length________________?
A. half
B. same amount
C. double
D. one-fourth
E. four times