272. What is the primary purpose of the pneumatic component shown in the illustration

If the locking handle is in any position other than 'zero', the output of the pneumatic valve will equal the input.
The indicated valve prevents transmission of transient signals to the governor speeder spring.
The valve with finite positioning is used to segregate terminal signals originated by the governor whenever the throttle is repositioned.
If the throttle is manually moved from its 'zero' position, the resulting effect will tend to override the output of the governor, and secure the air to the control circuit.

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