Category Archives: Mechanical Behaviour and Testing of Materials MCQ

This set of Mechanical Behaviour Multiple Choice Questions & Answers focuses on “Transition Temperature and Its Significance”. 1. Which factor affects ductile brittle transition behaviour the most? a) Strain rate b) Temperature c) Triaxiality d) Notching 2. With an increase in sharpness of notch, transition temperature ________ a) Increases b) Decreases c) Remains constant d) … Read more

This set of Mechanical Behaviour Multiple Choice Questions & Answers (MCQs) focuses on “Ductile-Brittle Transition Behaviour”. 1. On increasing temperature, a material tends to loose its ability to resists plastic deformation is due to decrease in _________________ a) Tensile stress b) Yield stress c) Compressive stress d) Shear stress 2. With increasing ___________ material’s amount … Read more

This set of Mechanical Behaviour Multiple Choice Questions & Answers (MCQs) focuses on “Creep Resistant Materials”. 1. In ferrite the self-diffusion coefficient _________ with increasing carbon content. a) Increases b) Decreases c) Remains constant d) First increases, then decrease 2. Which method improves creep resistance but not strength? a) Solution strengthening b) Alloying c) Grain … Read more

This set of Mechanical Behaviour Assessment Questions and Answers focuses on “Factors Affecting Creep Behaviour”. 1. ____________ favors the creep resistance of the metal. a) Lower SFE b) High temperature c) High stress d) Pre-strain 2. BCC metals have ___________ stacking fault energy. a) Zero b) Very low c) Medium d) Very high 3. Sherby … Read more

This set of Mechanical Behaviour Multiple Choice Questions & Answers (MCQs) focuses on “Mechanism of Creep Deformation”. 1. Co is added in Ni-base alloy so as to increase ___________ temperature. a) Melting b) Boiling c) ϒ’ solvus d) Recrystallization 2. ___________ impart hot corrosion resistance in Ni-base superalloys. a) Cr b) Ti c) Mo d) … Read more

This set of Mechanical Behaviour Questions and Answers for Aptitude test focuses on “Deformation at Elevated Temperature”. 1. On _________ temperature slip may also occur on non-close packed planes. a) Sub-zero b) Elevated c) Melting d) Low 2. In aluminum _________ planes are only active slip planes at low temperature. a) {1 1 1} b) … Read more

This set of Mechanical Behaviour Multiple Choice Questions & Answers (MCQs) focuses on “Equicohesive Temperature”. 1. At low temperature, metals under stress deform by ________ a) Slip and twin b) Softening c) Rupture d) Residual stresses 2. The fracture through grains is known as ________ a) Rupture b) Trans granular c) Inter crystalline d) Intergranular … Read more

This set of Mechanical Behaviour MCQs focuses on “Creep at Lower and High Temperatures”. 1. At lower temperature (below 0.3 Tm), what causes creep phenomenon? a) Diffusion process b) Diffusion less process c) Recrystallization d) Softening 2. What is the predominant process below 0.5 Tm? a) Viscous creep b) Tertiary stage c) Secondary stage d) … Read more

This set of Mechanical Behaviour Multiple Choice Questions & Answers (MCQs) focuses on “Creep Curve”. 1. Which metal is capable of maintaining its mechanical strength at a working temperature greater than 300 °C? a) Pb b) Zn c) Fe d) Sn 2. With an increase in temperature, the modulus of elasticity ____________ a) Increases b) … Read more

This set of Mechanical Behaviour Quiz focuses on “Variables Affecting Tensile Properties”. 1. With increasing gauge length, % elongation _____ a) Increases b) Decreases c) Remains constant d) First increases then decrease 2. What gauge length is commercially used? a) 10 mm b) 20 mm c) 30 mm d) 50mm 3. As cast, small diameter … Read more