The rate of amount of water vapour present to the amount it would have contained, had it been saturated, is known as the…

The speed of sound is taken as ______

In a studio, the noise level should be brought down to _______

In winter, it becomes necessary to supplied slightly _____ air to the inside of the building.

The sound insulation offered by rigid homogenous walls decreases with the increase in the thickness of the wall.

The rate of flow through an opening due to the wind blowing on the wall containing it is given by the expression _______

Proper shape of the hall can help in preventing the formation of echoes.

________________ are made of sheet metal of suitable size and shape to convey the conditioned air.