This set of Mechanical Behaviour Questions and Answers for Entrance exams focuses on “Variables Affecting Fatigue”. 1. Which element has a maximum effect on fatigue strength in steel? a) Ni b) Ag c) C d) Au 2. What causes an increase in fatigue strength of steel? a) Vacancies b) Micro cracking c) Bridging d) Strain … Read more
This set of Mechanical Behaviour Multiple Choice Questions & Answers (MCQs) focuses on “Low Cycle Fatigue”. 1. By decreasing the number of cycles, the allowable stress ________ a) Increases b) Decreases c) Remains constant d) First Increases then decreases 2. What term is used for fatigue that occurs with less than 104 or 105 cycles? … Read more
This set of Mechanical Behaviour Multiple Choice Questions & Answers (MCQs) focuses on “Mechanism of Fatigue”. 1. Which of the following is not a reason for crack initiation? a) Inclusions b) Gas pores c) Local soft spots d) Vacancy 2. Crack mostly starts at _________ a) Surface b) Inclusion c) Pore d) Soft spots 3. … Read more
This set of Mechanical Behaviour online test focuses on “Fatigue Behaviour in Iron and Steel”. 1. Fatigue strength of iron and steel _________ with an increase in temperature. a) Increases b) Decreases c) Remains constant d) First increases and then decreases 2. Strain ageing process is associated with _________ a) Static loading b) Dynamic loading … Read more
This set of Mechanical Behaviour Multiple Choice Questions & Answers (MCQs) focuses on “Fatigue Test”. 1. In what terms, fatigue life is measured? a) Time of failures b) Number of cycles of failure c) Stress of failure d) Appearance of fracture 2. Fatigue curves are popularly known as __________ curves. a) S b) R c) … Read more
This set of Mechanical Behaviour Multiple Choice Questions & Answers (MCQs) focuses on “Stress Cycles”. 1. Failure of metals under fluctuating stress is known as __________ failure. a) Creep b) Fatigue c) Dynamic d) Tensile 2. ________ % of engineering failures are fatigue failures. a) 10 b) 30 c) 50 d) 90 3. Fatigue failures … Read more
This set of Mechanical Behaviour Question Paper focuses on “Toughening in Ceramics”. 1. What is the reason for limited applications of ceramics in structural applications? a) Brittle nature b) Poor surface finish c) Poor aesthetic d) Less tensile strength. 2. What is the relation between critical fracture stress and flaw size? a) σfr α a … Read more
This set of Mechanical Behaviour Multiple Choice Questions & Answers (MCQs) focuses on “Fracture Toughness”. 1. Which of the following mode is the sliding mode? a) Mode I b) Mode II c) Mode III d) Mode IV 2. Which of the following mode is tearing mode? a) Mode I b) Mode II c) Mode III … Read more
This set of Mechanical Behaviour Questions and Answers for Campus interviews focuses on “Variables Affecting Impact Value”. 1. Above critical speed, what happens to the energy required to rupture a material when striking velocity increases? a) Increases slowly b) Increases rapidly c) Decreases slowly d) Decreases rapidly 2. Critical velocity is higher for annealed steels … Read more
This set of Mechanical Behaviour Multiple Choice Questions & Answers (MCQs) focuses on “Notch-Bar Impact Test”. 1. Kinetic energy of Izod hammer is given as _________ a) wh-wh’ b) wh c) whg d) wh2 2. Work of fracture is given by __________ a) wh b) whg c) wh-wh’ d) wh2 3. Standard specimen has v-notch … Read more
