27 Codes & Standards questions from the Mechanical Design bank, written for Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd.
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A.limit state code for general steel construction that replaced the working stress method of IS 800:1984, used for machine frames and structures
B.design-by-rule code for unfired pressure vessels above 15 psi, with allowable stress based on tensile strength divided by 3.5
C.design-by-analysis alternative with higher allowable stress (tensile divided by 2.4) that demands more inspection and a fatigue assessment
D.specification for centrifugal pumps in petroleum, petrochemical and gas service requiring three years of uninterrupted operation and a 20-year design life
Answer + AI explanation with Pro
2. Which term means: "design-by-rule code for unfired pressure vessels above 15 psi, with allowable stress based on tensile strength divided by 3.5"?
Junior
A.ASME BPVC Section VIII Division 2
B.ASME BPVC Section VIII Division 1
C.API 650
D.Joint efficiency E
Answer + AI explanation with Pro
3. Which statement is correct?
Junior
A.ASME BPVC Section VIII Division 1 — standard for welded steel storage tanks at near-atmospheric pressure, with shell course thickness by the one-foot method
B.ASME BPVC Section VIII Division 1 — design-by-rule code for unfired pressure vessels above 15 psi, with allowable stress based on tensile strength divided by 3.5
C.ASME BPVC Section VIII Division 1 — process piping code for refineries, chemical, pharmaceutical and gas plants covering materials, design, fabrication, examination and testing
D.ASME BPVC Section VIII Division 1 — limit state code for general steel construction that replaced the working stress method of IS 800:1984, used for machine frames and structures
Answer + AI explanation with Pro
4. What is ASME B31.3?
Junior
A.specification for centrifugal pumps in petroleum, petrochemical and gas service requiring three years of uninterrupted operation and a 20-year design life
B.process piping code for refineries, chemical, pharmaceutical and gas plants covering materials, design, fabrication, examination and testing
C.design-by-rule code for unfired pressure vessels above 15 psi, with allowable stress based on tensile strength divided by 3.5
D.standard for welded steel storage tanks at near-atmospheric pressure, with shell course thickness by the one-foot method
Answer + AI explanation with Pro
5. Which term means: "process piping code for refineries, chemical, pharmaceutical and gas plants covering materials, design, fabrication, examination and testing"?
Junior
A.API 610
B.API 650
C.ASME BPVC Section VIII Division 1
D.ASME B31.3
Answer + AI explanation with Pro
6. Which statement is correct?
Junior
A.ASME B31.3 — factor of 1.0, 0.85 or 0.7 in the ASME VIII thickness formula depending on whether the weld is fully, spot or not radiographed
B.ASME B31.3 — specification for centrifugal pumps in petroleum, petrochemical and gas service requiring three years of uninterrupted operation and a 20-year design life
C.ASME B31.3 — certification mark showing a vessel was built under an ASME-accredited quality system with Authorized Inspector sign-off at hold points
D.ASME B31.3 — process piping code for refineries, chemical, pharmaceutical and gas plants covering materials, design, fabrication, examination and testing
Answer + AI explanation with Pro
7. What is IS 800:2007?
Junior
A.process piping code for refineries, chemical, pharmaceutical and gas plants covering materials, design, fabrication, examination and testing
B.limit state code for general steel construction that replaced the working stress method of IS 800:1984, used for machine frames and structures
C.certification mark showing a vessel was built under an ASME-accredited quality system with Authorized Inspector sign-off at hold points
D.design-by-rule code for unfired pressure vessels above 15 psi, with allowable stress based on tensile strength divided by 3.5
Answer + AI explanation with Pro
8. Which term means: "limit state code for general steel construction that replaced the working stress method of IS 800:1984, used for machine frames and structures"?
Junior
A.Pressure Equipment Directive
B.ASME B31.3
C.ASME BPVC Section VIII Division 2
D.IS 800:2007
Answer + AI explanation with Pro
9. Which statement is correct?
Junior
A.IS 800:2007 — design-by-analysis alternative with higher allowable stress (tensile divided by 2.4) that demands more inspection and a fatigue assessment
B.IS 800:2007 — EU directive 2014/68/EU that sorts equipment into categories I–IV by pressure-volume product and fluid group before CE marking
C.IS 800:2007 — certification mark showing a vessel was built under an ASME-accredited quality system with Authorized Inspector sign-off at hold points
D.IS 800:2007 — limit state code for general steel construction that replaced the working stress method of IS 800:1984, used for machine frames and structures
Answer + AI explanation with Pro
10. What is API 610?
Mid
A.certification mark showing a vessel was built under an ASME-accredited quality system with Authorized Inspector sign-off at hold points
B.design-by-analysis alternative with higher allowable stress (tensile divided by 2.4) that demands more inspection and a fatigue assessment
C.process piping code for refineries, chemical, pharmaceutical and gas plants covering materials, design, fabrication, examination and testing
D.specification for centrifugal pumps in petroleum, petrochemical and gas service requiring three years of uninterrupted operation and a 20-year design life
Answer + AI explanation with Pro
11. Which term means: "specification for centrifugal pumps in petroleum, petrochemical and gas service requiring three years of uninterrupted operation and a 20-year design life"?
Mid
A.Joint efficiency E
B.ASME BPVC Section VIII Division 2
C.API 610
D.IS 800:2007
Answer + AI explanation with Pro
12. Which statement is correct?
Mid
A.API 610 — design-by-rule code for unfired pressure vessels above 15 psi, with allowable stress based on tensile strength divided by 3.5
B.API 610 — EU directive 2014/68/EU that sorts equipment into categories I–IV by pressure-volume product and fluid group before CE marking
C.API 610 — standard for welded steel storage tanks at near-atmospheric pressure, with shell course thickness by the one-foot method
D.API 610 — specification for centrifugal pumps in petroleum, petrochemical and gas service requiring three years of uninterrupted operation and a 20-year design life
Answer + AI explanation with Pro
13. What is API 650?
Mid
A.design-by-rule code for unfired pressure vessels above 15 psi, with allowable stress based on tensile strength divided by 3.5
B.standard for welded steel storage tanks at near-atmospheric pressure, with shell course thickness by the one-foot method
C.specification for centrifugal pumps in petroleum, petrochemical and gas service requiring three years of uninterrupted operation and a 20-year design life
D.certification mark showing a vessel was built under an ASME-accredited quality system with Authorized Inspector sign-off at hold points
Answer + AI explanation with Pro
14. Which term means: "standard for welded steel storage tanks at near-atmospheric pressure, with shell course thickness by the one-foot method"?
Mid
A.API 610
B.API 650
C.IS 800:2007
D.ASME B31.3
Answer + AI explanation with Pro
15. Which statement is correct?
Mid
A.API 650 — EU directive 2014/68/EU that sorts equipment into categories I–IV by pressure-volume product and fluid group before CE marking
B.API 650 — design-by-analysis alternative with higher allowable stress (tensile divided by 2.4) that demands more inspection and a fatigue assessment
C.API 650 — specification for centrifugal pumps in petroleum, petrochemical and gas service requiring three years of uninterrupted operation and a 20-year design life
D.API 650 — standard for welded steel storage tanks at near-atmospheric pressure, with shell course thickness by the one-foot method
Answer + AI explanation with Pro
16. What is Joint efficiency E?
Mid
A.factor of 1.0, 0.85 or 0.7 in the ASME VIII thickness formula depending on whether the weld is fully, spot or not radiographed
B.certification mark showing a vessel was built under an ASME-accredited quality system with Authorized Inspector sign-off at hold points
C.design-by-rule code for unfired pressure vessels above 15 psi, with allowable stress based on tensile strength divided by 3.5
D.limit state code for general steel construction that replaced the working stress method of IS 800:1984, used for machine frames and structures
Answer + AI explanation with Pro
17. Which term means: "factor of 1.0, 0.85 or 0.7 in the ASME VIII thickness formula depending on whether the weld is fully, spot or not radiographed"?
Mid
A.API 610
B.ASME BPVC Section VIII Division 1
C.Joint efficiency E
D.U-stamp
Answer + AI explanation with Pro
18. Which statement is correct?
Mid
A.Joint efficiency E — standard for welded steel storage tanks at near-atmospheric pressure, with shell course thickness by the one-foot method
B.Joint efficiency E — design-by-analysis alternative with higher allowable stress (tensile divided by 2.4) that demands more inspection and a fatigue assessment
C.Joint efficiency E — factor of 1.0, 0.85 or 0.7 in the ASME VIII thickness formula depending on whether the weld is fully, spot or not radiographed
D.Joint efficiency E — EU directive 2014/68/EU that sorts equipment into categories I–IV by pressure-volume product and fluid group before CE marking
Answer + AI explanation with Pro
19. What is Pressure Equipment Directive?
Mid
A.design-by-rule code for unfired pressure vessels above 15 psi, with allowable stress based on tensile strength divided by 3.5
B.EU directive 2014/68/EU that sorts equipment into categories I–IV by pressure-volume product and fluid group before CE marking
C.limit state code for general steel construction that replaced the working stress method of IS 800:1984, used for machine frames and structures
D.factor of 1.0, 0.85 or 0.7 in the ASME VIII thickness formula depending on whether the weld is fully, spot or not radiographed
Answer + AI explanation with Pro
20. Which term means: "EU directive 2014/68/EU that sorts equipment into categories I–IV by pressure-volume product and fluid group before CE marking"?
Mid
A.API 610
B.Pressure Equipment Directive
C.API 650
D.ASME BPVC Section VIII Division 1
Answer + AI explanation with Pro
21. Which statement is correct?
Mid
A.Pressure Equipment Directive — EU directive 2014/68/EU that sorts equipment into categories I–IV by pressure-volume product and fluid group before CE marking
B.Pressure Equipment Directive — process piping code for refineries, chemical, pharmaceutical and gas plants covering materials, design, fabrication, examination and testing
C.Pressure Equipment Directive — design-by-rule code for unfired pressure vessels above 15 psi, with allowable stress based on tensile strength divided by 3.5
D.Pressure Equipment Directive — specification for centrifugal pumps in petroleum, petrochemical and gas service requiring three years of uninterrupted operation and a 20-year design life
Answer + AI explanation with Pro
22. What is ASME BPVC Section VIII Division 2?
Senior
A.specification for centrifugal pumps in petroleum, petrochemical and gas service requiring three years of uninterrupted operation and a 20-year design life
B.limit state code for general steel construction that replaced the working stress method of IS 800:1984, used for machine frames and structures
C.design-by-rule code for unfired pressure vessels above 15 psi, with allowable stress based on tensile strength divided by 3.5
D.design-by-analysis alternative with higher allowable stress (tensile divided by 2.4) that demands more inspection and a fatigue assessment
Answer + AI explanation with Pro
23. Which term means: "design-by-analysis alternative with higher allowable stress (tensile divided by 2.4) that demands more inspection and a fatigue assessment"?
Senior
A.ASME B31.3
B.Pressure Equipment Directive
C.ASME BPVC Section VIII Division 2
D.U-stamp
Answer + AI explanation with Pro
24. Which statement is correct?
Senior
A.ASME BPVC Section VIII Division 2 — design-by-analysis alternative with higher allowable stress (tensile divided by 2.4) that demands more inspection and a fatigue assessment
B.ASME BPVC Section VIII Division 2 — limit state code for general steel construction that replaced the working stress method of IS 800:1984, used for machine frames and structures
C.ASME BPVC Section VIII Division 2 — factor of 1.0, 0.85 or 0.7 in the ASME VIII thickness formula depending on whether the weld is fully, spot or not radiographed
D.ASME BPVC Section VIII Division 2 — specification for centrifugal pumps in petroleum, petrochemical and gas service requiring three years of uninterrupted operation and a 20-year design life
Answer + AI explanation with Pro
25. What is U-stamp?
Senior
A.design-by-rule code for unfired pressure vessels above 15 psi, with allowable stress based on tensile strength divided by 3.5
B.process piping code for refineries, chemical, pharmaceutical and gas plants covering materials, design, fabrication, examination and testing
C.standard for welded steel storage tanks at near-atmospheric pressure, with shell course thickness by the one-foot method
D.certification mark showing a vessel was built under an ASME-accredited quality system with Authorized Inspector sign-off at hold points
Answer + AI explanation with Pro
26. Which term means: "certification mark showing a vessel was built under an ASME-accredited quality system with Authorized Inspector sign-off at hold points"?
Senior
A.ASME BPVC Section VIII Division 1
B.U-stamp
C.Joint efficiency E
D.Pressure Equipment Directive
Answer + AI explanation with Pro
27. Which statement is correct?
Senior
A.U-stamp — standard for welded steel storage tanks at near-atmospheric pressure, with shell course thickness by the one-foot method
B.U-stamp — certification mark showing a vessel was built under an ASME-accredited quality system with Authorized Inspector sign-off at hold points
C.U-stamp — EU directive 2014/68/EU that sorts equipment into categories I–IV by pressure-volume product and fluid group before CE marking
D.U-stamp — design-by-rule code for unfired pressure vessels above 15 psi, with allowable stress based on tensile strength divided by 3.5
Answer + AI explanation with Pro
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