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For the three-dimensional object shown in thefigure below, five faces are insulated. Thesixth face (PQRS), which is not insulated,interacts thermally with the ambient, with aconvective heat transfer coefficient of 10 W/m2.K. The ambient temperature is 30°C. Heatis uniformly generated inside the object at therate of 100 W/m3. Assuming the face PQRS tobe at uniform temperature, its steady statetemperature is:



  • a)
    10°C

  • b)
    20°C

  • c)
    30°C

  • d)
    40°C

Correct answer is option 'D'. Can you explain this answer?
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For the three-dimensional object shown in thefigure below, five faces ...
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For the three-dimensional object shown in thefigure below, five faces ...
Here just make it easy by assuming the entire plate is doing heat transfer on one side(pqrs),keeping rest insulated..n heat flow direction is from in to out..since in question its given heat generates within body.Now as only pqrs side is noninsulated den it can only bring d heat to transfer. Now simply put the usual formula q=dT/(1/h) q=100W/m3 dT=T-30(as its moving from plate to ambient) h=10W/m*m*K Get T=40
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For the three-dimensional object shown in thefigure below, five faces ...
The best concept is to use energy conservation, it's a bit different from thermo/ fluid.

Heat in + Heat generated = Heat out + Heat stored
0 + vol * heat generation rate = hA ∆T + 0

Solve it you will get T = 40
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For the three-dimensional object shown in thefigure below, five faces are insulated. Thesixth face (PQRS), which is not insulated,interacts thermally with the ambient, with aconvective heat transfer coefficient of 10 W/m2.K. The ambient temperature is 30°C. Heatis uniformly generated inside the object at therate of 100 W/m3. Assuming the face PQRS tobe at uniform temperature, its steady statetemperature is:a)10°Cb)20°Cc)30°Cd)40°CCorrect answer is option 'D'. Can you explain this answer?
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For the three-dimensional object shown in thefigure below, five faces are insulated. Thesixth face (PQRS), which is not insulated,interacts thermally with the ambient, with aconvective heat transfer coefficient of 10 W/m2.K. The ambient temperature is 30°C. Heatis uniformly generated inside the object at therate of 100 W/m3. Assuming the face PQRS tobe at uniform temperature, its steady statetemperature is:a)10°Cb)20°Cc)30°Cd)40°CCorrect answer is option 'D'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about For the three-dimensional object shown in thefigure below, five faces are insulated. Thesixth face (PQRS), which is not insulated,interacts thermally with the ambient, with aconvective heat transfer coefficient of 10 W/m2.K. The ambient temperature is 30°C. Heatis uniformly generated inside the object at therate of 100 W/m3. Assuming the face PQRS tobe at uniform temperature, its steady statetemperature is:a)10°Cb)20°Cc)30°Cd)40°CCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For the three-dimensional object shown in thefigure below, five faces are insulated. Thesixth face (PQRS), which is not insulated,interacts thermally with the ambient, with aconvective heat transfer coefficient of 10 W/m2.K. The ambient temperature is 30°C. Heatis uniformly generated inside the object at therate of 100 W/m3. Assuming the face PQRS tobe at uniform temperature, its steady statetemperature is:a)10°Cb)20°Cc)30°Cd)40°CCorrect answer is option 'D'. Can you explain this answer?.
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