Which of the following compressors are oil free (no lubrication):

Air compressors typically reject about  approximately ______ Btu/hr for every hp:

For Centrifugal compressors, with variation in the air density, the average power requirement will vary a total of approximately ________ :

_______ are generally used to remove vapors, harmful chemicals, taste, and odor from the compressed air systems:

Which of the following form of the moisture in compressed air cannot be noticeable and easily removable:

Good aftercooling of the compressed air can extract ______ of the moisture in the air and can dramatically reduce the moisture loading on air dryers:

Pre filters when they become dirty can typically cause an increase in power consumption of _____ in compressed air system:

For every 7°F rise in temperature of intake air in compressed air system will result in  _____ rise in energy consumption.

The ______ the dewpoint requirement for compressed air system, the more expensive the dryer’s purchase price and operational cost:

Compression air leaving the air compressor will be hot and dry:

Air’s ability to hold moisture approximately doubles for every ______ incremental increase in atmospheric temperature:

Which of the following compressors have poor Partial load efficiency:

Serviceability of the screw compressor is relatively simple:

Which of the following dryer may not essentially require a pre-filter:

Which of the following is the function of Receivers in compressed air package: