47.

48.

49.

50.

51.

52.

53.

The radius of gyration is given by the expression for a uniform body, (Take Moment of
Inertia, M-Mass moment, A-Area) :

Thermal Strain is given by (a@-Coefficient of linear expansion, T- Rise in Temperature,
E-Young’s Modulus, ¢ -Strain) :

(A) of (B) Let
(C) Eat 0) ഗ്‌

Mohvr’s circle reduces to a point :

(A) Equal and opposite axial stresses on two mutually perpendicular planes, the
planes being free of shear

(B) Uniaxial stress only
(C) For a point in hydrostatic fluid
(D) Pure shear

The ratio of thickness to internal diameter of a cylindrical shell is less than —————_—_,
the shell is called a thin cylinder.

(A) 1/10 (B) 1/20
(C) 2/10 (D) 10/1

Which of the following represent the engineering requirements of materials?
(^) Fabrication requirement (8) requirement

(C) Economic requirement (D)_ Allof the above

Effect of adding phosphorous to cast iron :
(A) Reduce graphitisation (3) Aids fusibility and fluidity
(C) Increase toughness (D) Allof the above

Special kind of annealing process used for wire, spring etc to prevent them from fracture and
to improve strength and toughness is:

(ಹ) Process annealing (3) Spherodise annealing

(@ Patenting annealing (D) Isothermal annealing

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