Questions

9901. What is the significance of pressure angle in gears?
9902. What are the main failure modes in gears?
9903. What is gear ratio, and how does it affect machine performance?
9904. What is the module of a gear, and how is it calculated?
9905. What is the difference between spur gear and helical gear?
9906. What are the different types of gears used in machine design?
9907. How does failure theory affect the selection of materials?
9908. What is the significance of load factor in design?
9909. What is fatigue safety factor, and how is it different from static FoS?
9910. How does the selection of failure criteria affect machine design?
9911. What is Maximum Principal Stress Theory, and where is it used?
9912. What is Distortion Energy Theory (Von Mises Criterion)?
9913. What is Maximum Shear Stress Theory (Tresca’s Criterion)?
9914. What are the different failure theories used in design?
9915. Why is the Factor of Safety different for different applications?
9916. What is Factor of Safety (FoS), and how is it determined?
9917. What is the difference between high-cycle and low-cycle fatigue?
9918. What are the major causes of fatigue failure in machine components?
9919. What is fracture mechanics, and how does it help in failure prediction?
9920. What is the difference between ductile and brittle failure?
9921. What is a Goodman diagram, and how is it used in fatigue design?
9922. How do surface treatments like shot peening improve fatigue life?
9923. What are the different stages of fatigue failure?
9924. What are S-N curves, and how are they used in fatigue analysis?
9925. What is the difference between fatigue strength and endurance limit?
9926. What is fatigue failure, and how does it occur?
9927. What are piezoelectric materials, and where are they used?
9928. How do dielectric materials function in capacitors?
9929. What is the Seebeck effect, and how is it used in thermoelectric applications?
9930. How do superconductors achieve zero electrical resistance?
9931. What are thermoelectric materials, and how do they work?
9932. Why are some materials good electrical conductors while others are insulators?
9933. What is the difference between thermal expansion and thermal contraction?
9934. How does heat capacity affect material performance?
9935. What is thermal conductivity, and how is it measured?
9936. How do nanostructured materials improve mechanical properties?
9937. What is the future of smart materials in engineering?
9938. How are conductive polymers used in electronics?
9939. What are aerogels, and why are they considered ultra-light materials?
9940. How do carbon nanotubes improve material performance?
9941. What is the significance of magnetic shape memory alloys?
9942. What are bio-based materials, and how are they used?
9943. What are 2D materials, and what are their applications?
9944. How do metamaterials achieve unique properties?
9945. What are high-entropy alloys, and why are they important?
9946. What are lightweight materials, and where are they used?
9947. How do materials contribute to sustainability in engineering?
9948. What are the advantages of using polymers in medical applications?
9949. Why are ceramics used in high-temperature applications?
9950. What are the benefits of using carbon fiber composites?
9951. How do environmental conditions affect material selection?
9952. What materials are used in biomedical implants?
9953. What are the main materials used in the automotive industry?
9954. Why are composite materials preferred in aerospace applications?
9955. What are the key factors in selecting materials for engineering applications?
9956. How does diffusion bonding work?
9957. What are the different types of adhesive bonding techniques?
9958. What are the properties of soldering and brazing alloys?
9959. How does electron beam welding work?
9960. What are the advantages of robotic welding?
9961. What are the common defects in welded joints?
9962. How does welding affect the microstructure of metals?
9963. Why is preheating necessary in welding?
9964. What are the key advantages of TIG welding?
9965. What is the difference between fusion and solid-state welding?
9966. What is the role of nano-coatings in modern engineering?
9967. What are self-healing coatings?
9968. How do thermal barrier coatings work?
9969. What is anodizing, and why is it used on aluminum?
9970. What is PVD (Physical Vapor Deposition), and where is it used?
9971. How does electroplating work?
9972. What are the types of protective coatings for metals?
9973. What are self-lubricating bearings, and how are they made?
9974. What is the role of binders in powder metallurgy?
9975. How does hot isostatic pressing improve powder metallurgy products?
9976. What are the limitations of powder metallurgy?
9977. What is sintering, and how does it affect material properties?
9978. How are metal powders produced for powder metallurgy?
9979. What are the main steps in the powder metallurgy process?
9980. What are the advantages of powder metallurgy over casting?
9981. What is powder metallurgy, and how does it work?
9982. What is the role of rare-earth metals in high-performance alloys?
9983. What are shape memory alloys, and how do they work?
9984. How are lead and tin alloys used in manufacturing?
9985. What are the advantages of nickel-based superalloys?
9986. Why is zinc used for galvanizing steel?
9987. What is the significance of bronze and brass in engineering?
9988. What are the main applications of copper alloys?
9989. What are the advantages of magnesium alloys?
9990. How does titanium compare to aluminum in strength and weight?
9991. What are the key properties of aluminum alloys?
9992. What is HSLA steel, and what are its advantages?
9993. What is dual-phase steel, and where is it used?
9994. What is the purpose of tempering martensitic steel?
9995. How does ductile iron differ from grey cast iron?
9996. What are the mechanical properties of high-speed steels?
9997. What is the role of chromium and nickel in stainless steel?
9998. What are the effects of carbon content on steel properties?
9999. What are the differences between grey cast iron and white cast iron?
10000. What are the classifications of stainless steel?

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