Question: high temperature corrosion of a carbon stee; can be a problem at a temperature above A. 500 oc B. 1000 oc C. 1500 oc D. none of the above Answer» a. 500 oc Note: The above multiple-choice question is…

Question: one of the following is a preventive measure to control corrosion fatigue failure A. eliminate cyclic stresses B. reduces stress concentratio n C. obtain a smooth and shiny surface on the metal D. all of the above Answer» d.…

Question: for materials having high ductility,                      type of bend test is used A. close B. angle C. 1800 D. cold Answer» c. 1800 Note: The above multiple-choice question is for all general and Competitive Exams in India. 

Question: which of the following is a type of surface defect ? A. dislocation B. low angle grain boundary C. schottky D. both b and c Answer» b. low angle grain boundary Note: The above multiple-choice question is for all…

Question: The displacement distance for atoms around the dislocation is the A. edge dislocation B. screw dislocations C. burger vector D. none of the above Answer» c. burger vector Note: The above multiple-choice question is for all general and Competitive…

Question: which of the following defect is not surface defect ? A. dislocation B. low angle grain boundary C. schottky D. both b and c Answer» d. both b and c Note: The above multiple-choice question is for all general…

Question:                        dislocations can glide & climb A. screw B. edge C. twinning D. cross Answer» b. edge Note: The above multiple-choice question is for all general and Competitive Exams in India. 

Question: in beam cross-sections,the axis along which the bending stresses are zero, is called as                      axis A. bending B. parallel C. perpendicular D. neutral Answer» d. neutral Note: The above multiple-choice question is for all general and Competitive Exams in India.