Learning Objective: Recognize the systems and the operation of the 1172AS1OO test stand. 9-12. 9-13. 9-14. 9-15. 9-16. 9-17. What is used as the pressure source on the 1172ASI00 test stand? 1. Oxygen 2. Helium 3. Nitrogen 4. Argon The 1172AS1O0 test stand can evaluate items under test at altitudes of up to how many feet? 1. 50,000 2. 75,000 3. 100,000 4. 150,000 How many on-off valves are incorporated into this test stand? 1. One 2. Two 3. Three 4. Four The reference pressure selector valve has how many operating positions? 1. One 2. Two 3. Three 4. FOur Which of the following valves indicates inches of water suction? 1. Reference pressure-selector valve 2. Pressure-selector valve 3. Leakage-selector valve 4. Flow–selector valve What is the principle of operation of a Vol-O-Flo element? 1. Flow pressure 2. Flow suction 3. Flow restriction 4. Flow detection 9-18. 9-19. 9-20. 9-21. 9-22. 9-23. Where are the Vol-O-FlO elements installed on the 1172AS100 test stand? 1. On control valves and selector valves 2. Between certain control valves and their indicating manometers 3. On certain on-off valves and control valves 4. Between selector valves and their indicating manometers How many Vol-O-Flo elements are incorporated into the 1172AS100 test stand? 1. One 2. Two 3. Three 4. Four Which of the following valves allows ambient air pressure into the chamber through the input Vol-O-Flo element? 1. System bleed valve 2. Chamber bleed valve 3. Output valve 4. Input valve Which of the following valves has a manometer? 1. Flutter dampener 2. Chamber bleed 3. Output 4. System bleed Why is the vent ambient valve considered an economizer valve? 1. It conserves ambient air 2. It is used at sea level 3. It is a nonmeasuring valve 4. It conserves nitrogen The proper way to use the shut- off valve is to open it fully, then turn it back how far? 1. 1/8 turn 2. 1/4 turn 3. 1/2 turn 4. 3/4 turn 50