Welcome to the 50 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
How are chloramines formed?
2.
What type of map provides a clear picture of the entire water distribution system?
3.
Sodium Hypochlorite comes in what form?
4.
A fire hydrant that has a yellow body and a red cap represents
5.
What two chemicals cause water hardness?
6.
If a trench is 5' or more deep it must be?
7.
A pro of chloramines is?
8.
When should packing replacement occur?
9.
A water sample should be analyzed for a chlorine residual immediately, but if not the operator can analyze the sample for a chlorine residual within?
10.
What type of fire hydrant has no main valve, but has a separate valve for each nozzle?
11.
If only two rings of packing are used in the stuffing box, the joints should be?
12.
A ladder is required in all excavations that are greater than?
13.
The Total Coliform Rule is based on?
14.
A red hydrant cap or red fire hydrant means?
15.
Who should be contacted to ensure proper disposal of water coming from the ground during trenching?
16.
Water distribution system piping should be rated to withstand how many times higher than normal operating pressure?
17.
How much larger should the outside diameter be of casing pipe protecting large water mains?
18.
The sensors that respond to liquid pressure will perform poorly if what enters the sensor?
19.
What type of joint is available in both bolted and boltless flexible pipe joint desings?
20.
What is the greatest problem for most water distribution shut off valves?
21.
What is the electronic standard range?
22.
High levels of Iron & Manganese in the drinking water will cause?
23.
How is the capacity of a centrifugal pump related to the total head?
24.
If a water storage tank is located far from the water system, what type of problem during peak demand would the water system probably have?
25.
Fire insurance underwriters recommend that no water main should have a diameter less than?
26.
Water high in nitrates can cause?
28.
The normal pH range of surface and ground water is?
29.
What type of pipe joint consists of two machined surfaces?
30.
When a water main needs to be depressurized is must be what?
31.
What describes the discharge rate of a piston style pump?
32.
What type of water meter is based on the Doppler effect?
33.
The most widely used type of prime mover in a pump station is?
34.
When disinfecting water mains with tablets what should the concentration be and for how long?
35.
The pulling or stretching of a water pipe without breaking is known as its?
36.
The outlet of a forced ventilation system for a chlorinator room she be located?
37.
What is the process used to test for leakage in pipes?
38.
Thrust blocks are not required when?
39.
What type of valve dampens water hammer?
40.
Why is it important to monitor the speed of a variable speed pump?
41.
Tier II violations do not pose an immediate threat to public health.
42.
When sampling for THM's, what percentage of samples must be taken at the furthest point in the distribution system?
43.
When using Chlorine tablets to disinfect a pipeline during installation, the tablets should be placed where?
44.
When installing the regulator to a chlorine cylinder, the lead or fiber washer used to prevent leaked should be changed?
45.
Water loss between 10-15% is accepted due to leaks, hydrant water theft, failing water meters, and illegal connections.
46.
If a water system collects at least 40 samples per month for total coliform analysis, what the is the acceptable percentage of samples that can come back positive?
47.
What is the purpose of sodium thiosulfate in a water sample bottle?
48.
What is an appropriative water right?
49.
With permit entry confined spaces, who is responsible for terminating entries?
50.
A measurement of the interior roughness of a pipe is?
