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Heat Transfer Test - 3
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Heat Transfer Test - 3
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  • Question 1/10
    4 / -1

    What is heat transfer?

    Solutions

    Heat transfer is a branch of thermal engineering which deals with the study of transfer of energy from a high-temperature reservoir to low-temperature reservoir.

     

  • Question 2/10
    4 / -1

    Which of the following is a method of heat transfer?

    Solutions

    Methods of heat transfer are:
    i) Conduction: Heat is transferred by solid materials.
    ii) Convection: Heat is transferred by gases.
    iii) Radiation: Heat is transferred by electromagnetic waves.

     

  • Question 3/10
    4 / -1

    Heat transfer takes place according to which of the following law?

    Solutions

    The total entropy of an isolated system (the thermal energy per unit temperature that is unavailable for doing useful work) can never decrease, according to the second law of thermodynamics.

     

  • Question 4/10
    4 / -1

    Which of the following is the rate of heat transfer unit?

    Solutions

    The joule is the unit of heat transfer, while the rate of heat transfer is measured in joules per second, i.e., watts.

     

  • Question 5/10
    4 / -1

    Which of the following is an example of steady-state heat transfer?

    Solutions

    The system is a perfect black body.

     

  • Question 6/10
    4 / -1

    Which way is heat transfer believed to take place in a long, hollow cylinder that is kept at consistent but varied temperatures on its inner and outer surfaces?

    Solutions

    On the periphery of the cylinder, the ambient temperature is uniform, and the temperature is uniform. As a result, it only occurs in the radial direction.

     

  • Question 7/10
    4 / -1

    Which of the following is correct regarding one dimensional heat transfer?

    Solutions

    In a one-dimensional heat flow, steady state is determined solely by the x coordinate, whereas unstable state is determined solely by the x coordinate and time.

     

  • Question 8/10
    4 / -1

    A person prefers to sit by a fire during the cold winter months. Which of the following heat transfer types gives him with the most heat?

    Solutions

    Even when separated by a medium that is colder than both of them, heat transmission by radiation can occur between two bodies.

     

  • Question 9/10
    4 / -1

    On which of the following does convective heat transfer coefficient doesn’t depend?

    Solutions

    It is represented by the letter h and is affected by space, time, geometry, and the orientation of a solid surface.

     

  • Question 10/10
    4 / -1

    In liquids and gases, heat transmission is primarily caused by

    Solutions

    Convection is the transfer of thermal energy between a solid and a fluid flowing through it.

     

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