Self Studies

Heat Transfer T...

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  • Question 1
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    The literature of heat transfer generally recognizes distinct modes of heat transfer. How many modes are there?

  • Question 2
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    Consider system A at uniform temperature t and system B at another uniform temperature T (t > T). Let the two systems be brought into contact and be thermally insulated from their surroundings but not from each other. Energy will flow from system A to system B because of

  • Question 3
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    An oil cooler in a high performance engine has an outside surface area 0.12 m2 and a surface temperature of 65 degree Celsius. At any intermediate time air moves over the surface of the cooler at a temperature of 30 degree Celsius and gives rise to a surface coefficient equal to 45.4 W/ m 2 K. Find out the heat transfer rate?

  • Question 4
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    Unit of rate of heat transfer is

  • Question 5
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    Convective heat transfer coefficient doesn’t depend on

  • Question 6
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    The rate equation used to describe the mechanism of convection is called Newton’s law of cooling. So rate of heat flow by convection doesn’t depend on

  • Question 7
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    How many types of convection process are there?

  • Question 8
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    Thermal conductivity is maximum for which substance

  • Question 9
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    A radiator in a domestic heating system operates at a surface temperature of 60 degree Celsius. Calculate the heat flux at the surface of the radiator if it behaves as a black body

  • Question 10
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    Which of the following is an example of forced convection?

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