Chemical Engineering :: Chemical Engineering Basics-2
- In a neutral solution
- In an isochoric process,
- The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.
- Heat dissipation in cooling towers is mainly by
- Yield strength of a polycrystalline metal with an average grain size, d, is proportional to
- Presence of sulphur in the fuel fired in a furnace
- __________ furnace is generally used in the non-ferrous foundaries.
- Which of the following metals occurs in nature in their free metallic state?
- Steels with high carbon equivalent have poor weldability, because in these steels during welding
- In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C.
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A.
Carbon and other alloying elements get oxidised from the weld pool |
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B.
Excessive ferrite forms in the heat affected zone leading to poor toughness of the weld |
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C.
Martensite forms in the heat affected zone leading to poor toughness/ductility of the weld |
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D.
Segregation of carbon and other element occurs in the weld pool leading to poor properties of the weld |