Assignment 7-Cont.

Aviation Structural Mechanic E2 - How airplanes are built and how to maintain them
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7-66. The gas purging set is designed to be used with which of the following gases? 1. Hydrogen 2. Nitrogen 3. Helium 4. Argon 7-67. Which of the following gases can be used with the gas purging set if water pumped gaseous nitrogen is not available? 1. Helium 2. Hydrogen 3. Oxygen 4. Argon 7-68. On the gas purging set, the high pressure relief valve relieves pressure in excess of what maximum pressure? 1. 3,550 psi 2. 3,600 psi 3. 3,675 psi 4. 3,750 psi 7-69. The high pressure gas from the gas supply cylinders is reduced to what pressure range? 7-70. Gas passing through the heater assembly is heated to what maximum temperature? 1. 165°F 2. 205°F 3. 255°F 4. 285°F 7-71. The gas exiting the filler valve of the gas purging set will be within what maximum temperature range? 1. 125 ±25°F 2. 225 ±25°F 3. 285 ±50°F 4. 325 ±50°F 7-72. A high temperature safety switch in incorporated in the system. It will break the electrical circuit to the heater assembly when heater assembly temperature exceeds what maximum temperature? 1. 175°F 200°F 2. 3. 250°F 4. 300°F 1. 40 ±5 psi 2. 50 ±5 psi 3. 60 ±5 psi 4. 70 ±5 psi 51

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