As demand on the device shown in the illustration fluctuates in the pressure range of 100 to 110 psi, the output of the unit is controlled by __________. Illustration GS-0119

Question

Accepted Answer

the modulation of the opening of a butterfly valve located in the air intake

Answer

proportional modulation of the compressor speed

Answer

complete shut down until the lower pressure limit is reached causing it to restart

Answer

change in control pressure to modulate the discharge of compressed air to the atmosphere

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