JSW_postassessment_Metallurgy JSW_Boiler Metallurgy_ILT_ Post Assessment JSW_Boiler Metallurgy_ILT_ Post Assessment The number of attempts remaining is 2 1 / 20 1. Which one of the following is iron impurities ? a. Sulphur b. Vanadium c. gold d. Carbon 2 / 20 2. The Purpose of Heat Treatment is _____________________ a. To change appearnce of the Component b. To change the mechanical propoperties of steel c. To change the internal structure of steel d. To Change Chemical composition of steel 3 / 20 3. What is Correct Nomenclature for identify for Tube or Pipe is correct? a. ID x Thickness for Pipe b. OD for pipe c. ID for tube d. OD x Thickness for Tube 4 / 20 4. Which of the following is not a mechanical property of Material a. Toughness b. Stiffness c. Hardness d. Electrical Condutivity 5 / 20 5. Which Failure mechanism of boiler tube is Related to High Temp ________ . a. Creep b. Fatigue c. Flow Accelerated Corrosion d. Stress Corrosion Cracking 6 / 20 6. Which material is recommonded out of given tube for Economizer ? a. SA 210 GrA1 b. SA 213 T91 c. SA 599 d. SA 105 7 / 20 7. Which alloying element improve corrosion Resistance property of carbon steel ? a. Chromium b. Suphur c. Phosphrus d. Niobium 8 / 20 8. Super Heater / Re heater tube of boiler is made up of which material a. Copper b. Wrought Iron c. Cast iron d. AlloySteel 9 / 20 9. What is irrelevant to Boiler Metallurgy a. Packing of Steel b. Grade of Steel c. Alloying of steel d. Microstructure of steel 10 / 20 10. With the reduction in the mean stress, the fatigue limit of the material a. None of the above b. Decreases c. Increases d. Stabilizes 11 / 20 11. Which part of Boiler operate under highest Fluegas Temp a. Super Heater b. Air Preheater c. Ecomonizer d. feed Water Heater 12 / 20 12. What is RLA in cotext of Indian Boiler Regulation a. Relieved Life Aggresion b. Residual life Assesment c. Remnant Life Assesment d. Remaining Life Assesment 13 / 20 13. Waterwall of boiler is made up of which material a. Cast iron b. Alluminimum c. Steel d. Copper 14 / 20 14. On which cycle does a modern thermal power plant operate? a. Brayton cycle b. Rankine cycle c. Otto cycle d. Carnot cycle 15 / 20 15. Which tube `s design temp is Lowest of all option a. Cabnon Steel b. Alloy Steel T1 c. Alloy Steel T22 d. Alloy Steel T91 16 / 20 16. HAZ is related ________________- a. Joining b. Chipping c. Cutting d. Welding 17 / 20 17. Post weld Heating is Required to ________________ a. Divert Stress b. induce Stress c. Implant Stress d. Relieve Stress 18 / 20 18. Which of the following elements were responsible for failure of the Titanic ship? Hint …..The steel used in the hull was high in sulfur, phosphorus In the freezing -2°C Atlantic waters, this caused a "ductile-to-brittle transition," meaning the metal shattered like glass upon impact instead of bending or deforming. a. High Mn b. High S, P c. Low Si d. Low S, P 19 / 20 19. Ductility of a material is defined as its ability to undergo significant permanent deformation in ______________ a. Shear b. Torsion c. Tension d. Compression 20 / 20 20. Safe-life design relies on _______ a. Factor of safety b. Designer c. Load sharing d. Crack propagation Your score is