During the operation of the device shown in...

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Question 1 of 205eccef9bbacbc34ba4d45592

During the operation of the device shown in the illustration, the required compressed air output has stabilized within a pressure range of 100-110 psi. Which of the following statements of operating conditions is correct? See illustration GS-0120.

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🔍 Key Concepts

• This is an air compressor system with a pressure‑control/governor and an unloader on the compressor inlet. • The system is operating normally in a stable range of 100–110 psi, not in an extreme high‑ or low‑pressure condition. • Components at the compressor (E and F) typically control how much air the compressor takes in, rather than acting as simple on/off valves.

💭 Think About

• Ask yourself: when system pressure is already stable at the desired range, would any safety or cut‑out devices be fully open or fully closed, or would something be modulating to match demand? • Look at which component senses line/receiver pressure and which one actually changes the compressor’s air intake—how would these two parts interact when pressure starts to drift slightly above or below 100–110 psi? • For each choice, decide whether it describes a condition that would happen at normal set pressure, or only during over‑pressure or low‑pressure situations.

✅ Before You Answer

• Identify which label is on the compressor inlet control/unloader (at the compressor), and which label is on any pressure‑sensing/governor device (on or near the receiver). • Check whether any option incorrectly suggests a valve that opens on low pressure when its real function would be to protect against high pressure. • Make sure the described state of the component matches a system that is already at its normal regulated pressure, not one that is starting up empty or relieving an over‑pressure.

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