Chemical Engineering Basics
Two wires of the same radius & material having length in the ratio of 1 : 2 are stretched by the same force. The strain produced in the two wires will be in the ratio of

0.084027777777778
0.043055555555556
0.042361111111111
0.044444444444444

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Chemical Engineering Basics
Which of the following is not a characteristic observed in material failure by fatigue fracture ?

Initation of crack occurs on the surface of the machine part
Plastic deformation of material does not occur
Initiation of crack from below the surface does not occur
Presence of both rough & smooth zone with conchoidal markings in smooth zone of the surface

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