Q1. What properties need to be considered for applications calling for following requirements:
- Strength for no plastic deformation under static load
- Strength to withstand overload without fracture
- Wear resistance
- Reliability and safety.
Q2. Specific strength of materials is very high when they are in fibre size but lower when they are in bar form – Why?
Q3. Distinguish between creep and fatigue.
Q4. List at least two factors that promote transition from ductile to brittle fracture.
Q5. Which theories of failure are used for (a) ductile materials and (b) brittle materials?
Q6. Explain the difference between the points of inflexion and contraflexure.
Q7.What is difference between proof resilience and modulus of resilience?
Q8. What is difference between column and strut?
Q9.Define buckling factor.
Q10. What is difference between conjugate beam and continuous beam?
Q11.Which factors influence the type of fracture in failure of a material?
Q12.What is Bauschinger effect?
Q13. Explain the rule to find specific heat of aqueous solution.
Q14. What do you understand by equation of state? Write two thermodynamic equations of state.
Q15. According to second law of thermodynamic what is the limitation for conversion of heat to work? What all conclusions are drawn for efficiency of conversion of beat to work?