Finite element modelling for mechanical and thermal system

Heat transfer between 2 solids occurs by

• conduction

• convection

• radiation

Heat transfer within a solid occurs by conduction.

• True

• False

Heat transfer between a solid and a fluid at rest occurs by

• conduction

• convection

• radiation

Heat transfer between a solid and moving fluid occurs by:

• conduction

• convection

• radiation

Water is hot and the spoon is cold. Heat transfer within the spoon occurs by:

• conduction

• convection

• radiation

Water is hot and the spoon is cold. Heat transfer between water and the spoon occurs by:

• conduction

• convection

• radiation

Heat transfer occurs by

• conduction

• convection

• radiation

In a porous media, heat is transferred only through fluid in the gaps.

• True

• False

Heat transfer in porous media involves heat transfer in solids and fluids

• True

• False

The specfic heat of zinc is 390 J/(kg.°C). The amount of heat required for heating 10 Kg of zinc from 25°C to 27°C is:

• 7800 J

• 7800 °C

• 6500 J

• 3500 Kg