CLASS C WATER OPERATOR LICENSE EXAM QUESTIONS
WITH THE LATEST AND UPDATED SCORE.
1) All public water systems in Texas are required to use _____ as the final disinfectant.
_ _ _ _ _ _ _ _ _ _ _ _ _ _
-- Answer ✔✔ chlorine
_ _ _ _
2) Water is stored to meet peak demand and to allow production facilities to operate
_ _ _ _ _ _ _ _ _ _ _ _ _ _
at _______ rates. -- Answer ✔✔ uniform
_ _ _ _ _ _
3) Ground water supply systems serving more than ___ connections must have a total
_ _ _ _ _ _ _ _ _ _ _ _ _
ground storage capacity of ___ gal/connection and elevated storage capacity of ___
_ _ _ _ _ _ _ _ _ _ _ _
gal/connection or pressure tank capacity of __ gal/connection. -- Answer ✔✔ 50,
_ _ _ _ _ _ _ _ _ _ _ _
200, 100, 20 _ _
4) The State recommends a TON (Threshold Odor Number) of less than ____. --
_ _ _ _ _ _ _ _ _ _ _ _ _
Answer ✔✔ 3 _ _
5) In Texas ___% of water is used for commercial, industrial or agricultural purposes. -
_ _ _ _ _ _ _ _ _ _ _ _ _
- Answer ✔✔ 75
_ _ _
6) In Texas ag water demands accounts for about ___% of the total water used. --
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Answer ✔✔ 57 _ _
7) Ammonia mixed with chlorine gas creates a -- Answer ✔✔ white smoke
_ _ _ _ _ _ _ _ _ _ _
8) The most difficult part of a water distribution operator's job. -- Answer ✔✔ furnish
_ _ _ _ _ _ _ _ _ _ _ _ _ _
a continuous supply
_ _
9) An oxygen deficient atmosphere is defined as one which contains _____ than
_ _ _ _ _ _ _ _ _ _ _ _
______ % oxygen. -- Answer ✔✔ less, 19.5
_ _ _ _ _ _ _
, 10) Characteristics of a Centrifugal Pump: as the head _____ the discharge ________. _ _ _ _ _ _ _ _ _ _ _ _
-- Answer ✔✔ increases, decreases
_ _ _ _
11) The operator should leave a ________ of slack in flexible tubing. -- Answer ✔✔
_ _ _ _ _ _ _ _ _ _ _ _ _ _
gooseneck
12) When pressure testing the water main, the test pressure should be ___times as
_ _ _ _ _ _ _ _ _ _ _ _ _
great as the ________ operating pressure. -- Answer ✔✔ 1.5, normal
_ _ _ _ _ _ _ _ _ _
13) Distribution systems are usually laid out in ____ and/or circular designs. -- Answer
_ _ _ _ _ _ _ _ _ _ _ _ _
✔✔ loops _
14) Dead ends in a system are usually located on ____ shaped or ____ designs. --
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Answer ✔✔ tree, grid _ _ _
15) An operator may refer to Piezometric elevation, static head, or pressure head as
_ _ _ _ _ _ _ _ _ _ _ _ _
____ height -- Answer ✔✔ vertical water column
_ _ _ _ _ _ _
16) The main purpose of the water storage facility is to provide ____ amount of water
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
to average or equalize the ______ demands plus provide ______ pressures to fight
_ _ _ _ _ _ _ _ _ _ _ _
_ fires. -- Answer ✔✔ sufficient, daily, minimum
_ _ _ _ _ _
17) Electrical demand in a wiring system is determined by the amount of ____
_ _ _ _ _ _ _ _ _ _ _ _ _
consumed. -- Answer ✔✔ watts _ _ _ _
18) Baffling inside a storage facility may be needed to prevent "hot spots" and ____
_ _ _ _ _ _ _ _ _ _ _ _ _ _
flows. -- Answer ✔✔ straight through
_ _ _ _ _
19) A mass of concrete placed at bends and valve structures to prevent pipeline
_ _ _ _ _ _ _ _ _ _ _ _ _
movement is commonly called a _____. -- Answer ✔✔ thrust block
_ _ _ _ _ _ _ _ _ _
20) What is the main difference between surface water and groundwater
_ _ _ _ _ _ _ _ _ _
contamination? -- Answer ✔✔ groundwater takes longer to recover after _ _ _ _ _ _ _ _ _ _
contamination
WITH THE LATEST AND UPDATED SCORE.
1) All public water systems in Texas are required to use _____ as the final disinfectant.
_ _ _ _ _ _ _ _ _ _ _ _ _ _
-- Answer ✔✔ chlorine
_ _ _ _
2) Water is stored to meet peak demand and to allow production facilities to operate
_ _ _ _ _ _ _ _ _ _ _ _ _ _
at _______ rates. -- Answer ✔✔ uniform
_ _ _ _ _ _
3) Ground water supply systems serving more than ___ connections must have a total
_ _ _ _ _ _ _ _ _ _ _ _ _
ground storage capacity of ___ gal/connection and elevated storage capacity of ___
_ _ _ _ _ _ _ _ _ _ _ _
gal/connection or pressure tank capacity of __ gal/connection. -- Answer ✔✔ 50,
_ _ _ _ _ _ _ _ _ _ _ _
200, 100, 20 _ _
4) The State recommends a TON (Threshold Odor Number) of less than ____. --
_ _ _ _ _ _ _ _ _ _ _ _ _
Answer ✔✔ 3 _ _
5) In Texas ___% of water is used for commercial, industrial or agricultural purposes. -
_ _ _ _ _ _ _ _ _ _ _ _ _
- Answer ✔✔ 75
_ _ _
6) In Texas ag water demands accounts for about ___% of the total water used. --
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Answer ✔✔ 57 _ _
7) Ammonia mixed with chlorine gas creates a -- Answer ✔✔ white smoke
_ _ _ _ _ _ _ _ _ _ _
8) The most difficult part of a water distribution operator's job. -- Answer ✔✔ furnish
_ _ _ _ _ _ _ _ _ _ _ _ _ _
a continuous supply
_ _
9) An oxygen deficient atmosphere is defined as one which contains _____ than
_ _ _ _ _ _ _ _ _ _ _ _
______ % oxygen. -- Answer ✔✔ less, 19.5
_ _ _ _ _ _ _
, 10) Characteristics of a Centrifugal Pump: as the head _____ the discharge ________. _ _ _ _ _ _ _ _ _ _ _ _
-- Answer ✔✔ increases, decreases
_ _ _ _
11) The operator should leave a ________ of slack in flexible tubing. -- Answer ✔✔
_ _ _ _ _ _ _ _ _ _ _ _ _ _
gooseneck
12) When pressure testing the water main, the test pressure should be ___times as
_ _ _ _ _ _ _ _ _ _ _ _ _
great as the ________ operating pressure. -- Answer ✔✔ 1.5, normal
_ _ _ _ _ _ _ _ _ _
13) Distribution systems are usually laid out in ____ and/or circular designs. -- Answer
_ _ _ _ _ _ _ _ _ _ _ _ _
✔✔ loops _
14) Dead ends in a system are usually located on ____ shaped or ____ designs. --
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Answer ✔✔ tree, grid _ _ _
15) An operator may refer to Piezometric elevation, static head, or pressure head as
_ _ _ _ _ _ _ _ _ _ _ _ _
____ height -- Answer ✔✔ vertical water column
_ _ _ _ _ _ _
16) The main purpose of the water storage facility is to provide ____ amount of water
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
to average or equalize the ______ demands plus provide ______ pressures to fight
_ _ _ _ _ _ _ _ _ _ _ _
_ fires. -- Answer ✔✔ sufficient, daily, minimum
_ _ _ _ _ _
17) Electrical demand in a wiring system is determined by the amount of ____
_ _ _ _ _ _ _ _ _ _ _ _ _
consumed. -- Answer ✔✔ watts _ _ _ _
18) Baffling inside a storage facility may be needed to prevent "hot spots" and ____
_ _ _ _ _ _ _ _ _ _ _ _ _ _
flows. -- Answer ✔✔ straight through
_ _ _ _ _
19) A mass of concrete placed at bends and valve structures to prevent pipeline
_ _ _ _ _ _ _ _ _ _ _ _ _
movement is commonly called a _____. -- Answer ✔✔ thrust block
_ _ _ _ _ _ _ _ _ _
20) What is the main difference between surface water and groundwater
_ _ _ _ _ _ _ _ _ _
contamination? -- Answer ✔✔ groundwater takes longer to recover after _ _ _ _ _ _ _ _ _ _
contamination
