Related Questions

If the modulus of elasticity for a given material is twice its modulus of rigidity, then bulk modulus is equal to
A 2C
B 3C
C $$\frac{{2{\text{C}}}}{3}$$
D $$\frac{{3{\text{C}}}}{2}$$
The relation between Young's modulus (E), shear modulus (C) and bulk modulus (K) is given by
A $${\text{E}} = \frac{{3{\text{KC}}}}{{3{\text{K}} + {\text{C}}}}$$
B $${\text{E}} = \frac{{6{\text{KC}}}}{{3{\text{K}} + {\text{C}}}}$$
C $${\text{E}} = \frac{{9{\text{KC}}}}{{3{\text{K}} + {\text{C}}}}$$
D $${\text{E}} = \frac{{12{\text{KC}}}}{{3{\text{K}} + {\text{C}}}}$$
Which of the following relationships is correct for relating the three elastic constants of an isotropic elastic material (where, E = Young's modulus, G = Modulus of rigidity or shear modulus v = Poisson's ratio)?
A E = 2G (1 + v)
B E = G (1 + v)
C $${\text{E}} = \frac{{{\text{G}}\left( {1 + {\text{v}}} \right)}}{2}$$
D E = 2G (1 + 2v)
Modulus of rupture of concrete is a measure of
A Flexural tensile strength
B Direct tensile strength
C Compressive strength
D Split tensile strength
Hall effect is observed in a specimen when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is
A Normal to both current and magnetic field
B In the direction of current
C Antiparallel to magnetic field
D In arbitrary direction
Hall effect is observed in a specimen (metal or semi conductor) when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is
A Normal to both current and magnetic field
B In the same direction as current
C In a direction anti parallel to magnetic field
D None of the above
The ratio of the largest load in a test to the original cross-sectional area of the test specimen is called the __________ stress.
A Yield point
B Breaking
C Ultimate
D None of these
Wohler test is a destructive test to find out the __________ strength of a prepared metal specimen.
A Creep
B Fatigue
C Endurance
D Tensile
The ratio of shear modulus to the modulus of elasticity for a poisson's ratio of 0.4 will be
A 14/5
B 7/5
C 5/14
D 5/7
The shear modulus of most materials with respect to the modulus of elasticity is
A Equal to half
B Less than half
C More than half
D None of these

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