Welcome to the 25 Question Water Distribution Practice Test.
Choose the best possible answer to the question.
1.
Milky water that clears in time from the bottom up is a possible indication of?
2.
The minimum cover over a water service in a warm climate is?
3.
The backfill material for a pipe installation should contain enough moisture for a thorough compaction?
4.
What is the highest degree of backlfow protection?
5.
What type of algae would be most likely found in nutrient rich waters?
6.
If only two rings of packing are used in the stuffing box, the joints should be?
7.
Water meters that can register small flows as well as large flows are?
8.
What type of pressure sensor uses a wire attached to a diaphram?
9.
Identify which is a Cross-Connection hazard in a drinking water system.
10.
What valve is used to dampen water hammer?
11.
An onsite sodium hypochlorite generation system creates liquid chlorine by combining?
12.
What type of joint is for steel piping?
13.
Who is the most responsible for your safety while on the job?
14.
What type of relay is mostly used to detect a power loss and initiate a switchover to another power source?
15.
The total dynamic head at which a pump must operate at is the sum of the static head and the head due to friction loss.
16.
What type of pipe has the lowest normal maximum working pressure?
17.
What can be done to prevent cavitation form occurring?
18.
What carcinogenic disinfection by product may be formed with chlorine is used to disinfect drinking water when organics are present?
19.
To re-pack a burred gate valve, the valve must be
20.
Head loss in a water distribution system depends on
21.
Water taste and odor complaints can come from
22.
What type of fire hydrant has no main valve, but has a separate valve for each nozzle?
24.
Testing for individual pathogens would be very expensive. Instead, test for an indicator organism. What organism should be tested for?
25.
What type of pipe joint permits flexible pipe alignment, is inexpensive to manufacture, and is easy to assemble?
