When the gas pressure in the right chamber of a Bird Mark 7 exceeds the magnetic attraction of the right magnet, which of the following occurs?
a. Exhalation ends. c. The diaphragm moves right.
b. Inspiration begins. d. The clutch plate is forced left.
ANS: C
Toward the end of inspiration, the pressure in the pressure chamber exceeds the magnetic attrac-tion of the right magnet. The diaphragm, clutch plate, and ceramic switch are then forced to the left, occluding gas flow into the ventilator and starting exhalation.
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