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A disk of diameter 40 cm and 5 cm thick is to be casted out of pure aluminium is an open mold operation. Melting temperature of Al , pouring temperature 800 . Assume that the amount of aluminium heated will be 5% more than that needed to fill the mould cavity. The amount of heat (MJ) added to aluminium starting from room temperature of 25 is__________. (Specific heat of Al (both cold and heated)= 0.88 J/g . Heat of fusion= 389 J/g. Density Al = 2.70 g/cm3 ).
  • a)
    18.5
  • b)
    19.5
Correct answer is between ' 18.5, 19.5'. Can you explain this answer?
Verified Answer
A disk of diameter 40 cm and 5 cm thick is to be casted out of pure a...
Volume of molten metal = 5% more than volume of mould
⇒ Volume of molten metal
Mass of molten metal
heat supplied = m(cp(Tm - TR) +L.H + Cp(TP -Tm))
Tm = melting temperature
TR = room temperature
Tp = pouring temperature
= 19 MJ
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Most Upvoted Answer
A disk of diameter 40 cm and 5 cm thick is to be casted out of pure a...
Volume of molten metal = 5% more than volume of mould
⇒ Volume of molten metal
Mass of molten metal
heat supplied = m(cp(Tm - TR) +L.H + Cp(TP -Tm))
Tm = melting temperature
TR = room temperature
Tp = pouring temperature
= 19 MJ
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Community Answer
A disk of diameter 40 cm and 5 cm thick is to be casted out of pure a...
Volume of molten metal = 5% more than volume of mould
⇒ Volume of molten metal
Mass of molten metal
heat supplied = m(cp(Tm - TR) +L.H + Cp(TP -Tm))
Tm = melting temperature
TR = room temperature
Tp = pouring temperature
= 19 MJ
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A disk of diameter 40 cm and 5 cm thick is to be casted out of pure aluminium is an open mold operation. Melting temperature of Al , pouring temperature 800 . Assume that the amount of aluminium heated will be 5% more than that needed to fill the mould cavity. The amount of heat (MJ) added to aluminium starting from room temperature of 25 is__________. (Specific heat of Al (both cold and heated)= 0.88 J/g . Heat of fusion= 389 J/g. Density Al = 2.70 g/cm3 ).a) 18.5b) 19.5Correct answer is between ' 18.5, 19.5'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A disk of diameter 40 cm and 5 cm thick is to be casted out of pure aluminium is an open mold operation. Melting temperature of Al , pouring temperature 800 . Assume that the amount of aluminium heated will be 5% more than that needed to fill the mould cavity. The amount of heat (MJ) added to aluminium starting from room temperature of 25 is__________. (Specific heat of Al (both cold and heated)= 0.88 J/g . Heat of fusion= 389 J/g. Density Al = 2.70 g/cm3 ).a) 18.5b) 19.5Correct answer is between ' 18.5, 19.5'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A disk of diameter 40 cm and 5 cm thick is to be casted out of pure aluminium is an open mold operation. Melting temperature of Al , pouring temperature 800 . Assume that the amount of aluminium heated will be 5% more than that needed to fill the mould cavity. The amount of heat (MJ) added to aluminium starting from room temperature of 25 is__________. (Specific heat of Al (both cold and heated)= 0.88 J/g . Heat of fusion= 389 J/g. Density Al = 2.70 g/cm3 ).a) 18.5b) 19.5Correct answer is between ' 18.5, 19.5'. Can you explain this answer?.
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