Answer to Question #154818 in Electric Circuits for zeeshan wahab

Question

i ) Describe any 4 natural/ industrial processes of adiabatic compression and

adiabatic expansion.

ii ) State how entropy changes are linked with Air pollution in modern world.

iii ) Describe the difference between capacitor and a capacitance. Also state the basic relation between frequency and capacitance.

Answer 1

i) The example of 4 natural/ industrial processes of adiabatic compression and

adiabatic expansion. are listed below-

• Rain shadow effect: It is a dry are behind the mountains, it occurs when the much water present in the air fall in the form of participation on one side of the mountain and on the other side of the mountain range the availability of the water is less.
• Heating or cooling of a body without any form of energy: The adiabatic process describes the heating and cooling effect of the body without the exchange of energy between the body and the atmosphere.
• Explosion of the bomb is a kind of adiabatic expansion.
• Combustion of flame.

ii) Entropy changes are linked with air pollution in modern world: As we know that in the polluted air carbon particles are present. It is black color and white color, and these particles form a layer in the atmosphere, when sun light incident on it then black dust particle absorb the heat and light and the white particle reflect the sun light back in the universe due to which the entropy of the earth are getting change.

iii) The property of an electronic device which stores the charge is called the capacitor. and the value of the stored charge called capacitance. For the AC circuit $x_c=\frac{1}{2\pi fC}$