TEXAS CLASS D WATER LICENSE EXAM UPDATED 2025

The state requires stored water to have a disinfectant ?


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residual




The number one cause of death in a confined space is lack of ?

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oxygen




Three types of pump curve are head capacity curve, efficiency curve, and ? curve.


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horsepower




As the force a pump works against increases, the capacity and efficiency ?


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decreases




Common pump problems include ? and water hammer.


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cavitation




To prevent work area accidents, workers should be trained from the Texas Manual on
Uniform Traffic Control Devices, Texas Department of ?, Austin.


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, Transportation




Select pipe on the basis of strength, length, carrying capacity, durability, ease of
installation, availability, soil conditions, and ?


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cost




When an excavation is ? feet or deeper, a means of cave-in protection is required.


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5




Everyone must participate in a safety program or it will ?


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fail




OSHA requires an anti-fall line if a portable ladder or ? are not used.


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