# pneumatics math

I have 8 pneumatic related math questions I need help with. they are all formula related...

1. A continuous-duty compressor supplies 35 SCFM to a pneumatic system at 80 psig. What is the minimum size receiver that should be used?

A. 6.4 gallon

B. 35.0 gallon

C. 40.7 gallon

D. 80 gallon

9. A volume of 7.5 ft3 of air is compressed to 2.2 ft3. The compression ratio is

A. 4.1

B. 2.2

C. 3.4

D. 0.29

10. An air volume of 25 SCFM is supplied to an air motor at 60 psig. The CFM used at this pressure is

A. 0.202

B. 4.92

C. 5.08

D. 127.04

11. A pneumatic pipe that’s 60 feet long should have a slope with a drop of about _______ inches from one end to the other.

A. 1.2

B. 6.0

C. 7.5

D. 18.0

13. Approximately what motor Hp will be required for a two-stage compressor for a 250 SCFM pneumatic system that operates at 100 psig?

A. 44.75

B. 41.0

C. 25.0

D. 100

Keahlian: Matematika

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