Aspect ratio in rectangular duct should be kept within ______ :

A ______ duct with its high strength to weight ratio is suitable for distribution systems:

In the ducts, pressure of the air falls because of which of the following:

Removal of latent heat will: 

Fans in _____ are seldom used in ventilation purpose:

With the higher discharge pressure of the air conditioning system, compression ratio:

The quantity of air to be distributed to various rooms, wings or zones of the building should be in proportional to the load in the respective areas:

Comfort conditions are attained by merely controlling the temperature

Jet type of nozzles are used where the supply air from the diffuser has to travel a _____ distance to the occupied zone:

The aluminum fins are coated to ______ surface tension of the condensate water droplets:

Face and by-pass dampes in the AHU helps in controlling Relative Humidity:

In which of the following system there is no reduction in the power consumption by the fan even though the load on the system has come down:

For clean rooms where the dust has to be arrested down to ____, absolute HEPA filters are used:

In a duct system, in which of the following case there will be more pressure drop (loss):

Which of the following material is used if the duct application requires less weight: