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Chapter 2: Principal stresses and strains Q.1. Define Principal stresses and planes. (VVimp)  Ans : Principal Planes​ ​ :​ ​“In a strained body there is a plane which carries only Normal stress is called Principal plane..​” In other words the plane which has no tangential(shear) stress is called principal plane. Principal Stresses​ ​ :​ ​“In a strained body there is a plane which carries only Normal stress is called Principal plane, the direct stress acting on this plane is called principal stress​” Q.2.Which stresses are developed in a closed cylinder subjected to internal  pressure  Ans : A cylinder subjected to internal pressure is subjected to two stresses 1) Circumferential (Hoop) stresses 2) Longitudinal stresses

Q.3. Define Hoop stresses. Hoop Stress: “Circumferential stress in a cylindrical shaped component as a result of internal or external pressure is called hoop stress”.

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Chapter 2: Principal stresses and strains

Q.1. Define Principal stresses and planes. (VVimp). Ans : Principal Planes​​ :​ ​“In a strained body there is a plane which carries only Normal stress is called Principal plane..​” In other words the plane which has no tangential(shear) stress is called principal plane. Principal Stresses​​ :​ ​“In a strained body there is a ...

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