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205.

The correct statement is
(a) characteristics of any series of alloys cannot be found by phase diagram
(b) phase diagram does not give amount of phases which are a function of composition, temperature and pressure
(c) the phase may be liquid or vapour with ordered crystal structure
(d) phase diagram provides the information on how rapidly equilibrium is reached

asked in Mechanical Paper-2, 2010

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206.

Assertion (A): A state of plane strain always results in plane stress conditions.
Reason (R): A thin sheet of metal stretched in its own plane results in plane strain conditions.
Which of the following statements is correct?
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true

asked in Mechanical Paper-2, 2010

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207.

Assertion (A): A plane state of stress always results in a plane state of strain.
Reason (R): A uniaxial state of stress results in a three dimensional state of strain.
Which of the following statements is correct?
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and Rare individually true but R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true

asked in Mechanical Paper-2, 2010

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208.

A shaft transmits 1000 kW of power at 100 rad/s. Then torque transmitted in kN-m is
(a) 0.1
(b) 1.0
(c) 10.0
(d) 100.0

asked in Mechanical Paper-2, 2010

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209.

If the principal stresses and maximum shearing stresses are of equal numerical values at a point in a stressed body, the state of stress can be termed as
(a) isotropic
(b) uniaxial
(c) pure shear
(d) generalised plane state of stress

asked in Mechanical Paper-2, 2010

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210.

The ratio of the core of a rectangular section to the area of the rectangular section when used as a short column is
a. 1/9
b. 1/36
c. 1/18
d. 1/24

asked in Mechanical Paper-2, 2010

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