Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

0

0.5

0.75

1

In conduction, reduction in the thickness of the material and an increase in thermal conductivity.

In convection, stirring of the fluid and cleaning the heating surface.

In radiation, increasing the temperature and reducing the emissivity.

all of the above

-1/3

-2/3

1

-1

density

coefficient of viscosity

gravitational force

all of these

above which a liquid will remain a liquid

above which a liquid will explode

above which a liquid will always convert into a vapour

below which a liquid will always be in vapour form