Area under the stress-strain curve upto the __________ is referred to as the modulus of resilience.

Modulus of resilience is defined as Resilience _____

A

at ultimate stress

B

per unit volume

C

at proportional limit

D

at elastic limit

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)

The shear modulus of resilience is proportional to

A

Shear stress

B

(Shear stress)²

C

(Shear stress)³

D

(Shear stress)⁴

Ponchon Savarit method is based on the use of enthalpy concentration diagram, which contains the bubble point curve (saturated liquid curve), dew point curve (saturated vapour curve) and equilibrium tie lines. As compared to McCabe-Thiele's method, this method

A

Is more accurate in finding the number of equilibrium stages

B

Accounts for the enthalpy changes in the process

C

Facilitates direct calculation of heat load on reboiler & condenser from, the diagram used in this method

D

All of the above

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

The ratio of plastic section modulus to elastic section modulus

A

Is equal to 1

B

Is always less than 1

C

Is always greater than 1

D

Can be less than 1

The relation between Young's modulus (E) and bulk modulus (K) is given by

A

$${\text{K}} = \frac{{3{\text{m}} - 2}}{{{\text{mE}}}}$$

B

$${\text{K}} = \frac{{{\text{mE}}}}{{3{\text{m}} - 2}}$$

C

$${\text{K}} = \frac{{3\left( {{\text{m}} - 2} \right)}}{{{\text{mE}}}}$$

D

$${\text{K}} = \frac{{{\text{mE}}}}{{3\left( {{\text{m}} - 2} \right)}}$$

Area under the stress-strain curve upto the __________ is referred to as the modulus of resilience.

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