CWEA Electrical and Instrument Grade 2 Exam New
2024-2025 Version Best Studying Material with All
Questions and Answers
Temporary traffic control lanes created as part of a Temporary Traffic Control Zone setup on a
street with a 35 MPH maximum speed limit shall be a minimum width of: ----------- Correct
Answer ----------- 10 feet
For a night time Short Term Stationary Temporary Traffic Control Zone setup on low speed/low
volume street, the minimum height of the traffic cones used shall be: ----------- Correct Answer --
--------- 28 inches
After completing a Temporary Traffic Control setup for your work zone it is a good practice to: -
---------- Correct Answer ----------- Observe how effective your TTC setup is working to control
traffic and make the necessary changes to it if necessary
When a citizen wants information regarding a maintenance operation you should give them as
much factual information as you can, and offer to help them further, true or false? -----------
Correct Answer ----------- True
You are the lead on a high priority critical pump repair. Your co-worker decides it's a good time
to take a break. You know that the job will take ten minutes if you have their help. What should
you do? ---------- Correct Answer ----------- A. Do the job yourself.
B. Get someone else to help you.
C. Calmly explain the importance of the job and that once it is done a break can be taken.
D. Take a break and then do the job.
Rationale: This approach promotes teamwork and ensures the critical task is completed
efficiently. It also shows leadership by calmly addressing the situation and emphasizing the
urgency of the repair.
A 480V, 3 phase motor, Delta connected, has one leg shorted, what will the resistance be
compared to the other legs ---------- Correct Answer ----------- A. Greater
*B. Lower
C. Same
D. Greater or lower
What is the "haunch zone" of an excavation? ---------- Correct Answer ----------- Either side of
the arched section in the bottom half of the pipe
What document would you require to be referenced when developing an S.O.P for hazardous
substace spill clean up? ---------- Correct Answer ----------- MSDS
You arrive at an SSO and relieve the stoppage 27 minutes after a call was placed to report it. You
,find that the spill was running at 6 gallons per minute, how much sewage went uncaptured? ------
---- Correct Answer ----------- 162 gallons
What is the minimum length of a taper in a temporary traffic control setup? ---------- Correct
Answer ----------- 50ft.
What are some examples of level control devices (devices that turn a pump at a pump station on
and off)? ---------- Correct Answer ----------- Bubbler Level Gauge, Mercury/Mechanical Float
Switches, Ultra Sonic Sensor
A 12V battery rated to provide 1amp for 20 hours across a 2000w load. How long will the
battery continue to produce an output? ---------- Correct Answer ----------- A. 1 hour
B. 10 hour
C.*** 100 hour
D. 1000 hour
A tank is 30' high, 26' wide, filled 14'. What is the volume? I believe you should assume this tank
is a cylinder. Pay attention if the question ask for the tanks volume or the volume of the fluid
inside the tank. ---------- Correct Answer ----------- Do Calculations
A 36" pipe has an elevation gain of 300', the process reaches an elevation of 200'. What is the
PSI? ---------- Correct Answer ----------- Do Calculation
A pipe has a 10" opening , and produces 2500 GPM. How many cubic feet/sec? ---------- Correct
Answer ----------- Do Calculations
What is the characteristic of resistance in copper wire? ---------- Correct Answer ----------- It is
inverse to its cross-sectional area.
What is the maximum time between taking a class in NFPA70E? ---------- Correct Answer -------
---- 1 year
OSHA or maybe it was some other agency???? Says the most common cause of electrical
accidents among those that work with electricity is? ---------- Correct Answer ----------- A.
***Contact with overhead lines, misuse of electrical cords, not using equipment for intended
purpose, not following manufactured guidelines.
B. Not wearing appropriate PPE
C. Misuse of large equipment, not setting up boundaries
D. XXX
You get called out to a lift station, the HMI screen is blank. What do you do? ---------- Correct
Answer ----------- A. Call information systems or IT to fix.
B. Turn it off/on
*C. Notify operations to monitor the system while you troubleshoot and fix.
D. XXX
,What appropriate steps to minimize affecting the process when tasked with fixing or replacing an
Influent Pump? Think these steps out, what makes the most sense. What will not affect the
process. What will reduce issues when doing the work. ---------- Correct Answer ----------- A.
Trouble shoot, order material, perform work, create work order, notify operations.
B. Notify ops, order material, perform work.
C. Perform work, notify ops, create work order.
D. *Troubleshoot, gather material, coordinate with operations, schedule date, create work order,
perform job, update work order.
When should information be documented to be revisited or reviewed at a later date. ----------
Correct Answer ----------- A. How many people worked that day.
B. ***Unauthorized person onsite, jobsite conditions.
C. Soil conditions
D. XXX
You approach a piece of equipment that is off or not working, the circuit breaker is in the tripped
position, what is the best way to troubleshoot? ---------- Correct Answer ----------- Inspect the
load side for obvious signs of overloading, cautiously reset the breaker, amp check the load.
What is it called when someone teaches safety? ---------- Correct Answer ----------- Safety
training
What is PPE Category 1? ---------- Correct Answer ----------- Arc-Rated clothing, Minimum Arc
Rating of Arc 4 cal/cm2
arc-rated long sleeve shirt and pants or overall
Parshall Flume Measurement point? 1.2 FT Water Height 20.8xH at measurement point ----------
Correct Answer ----------- Possible answer:72,607 MGD
Absoulte Pressure Gauge? What is True? ---------- Correct Answer ----------- Possible answer:
Read more accurate or 14.7 PSI higher
Flow meter that uses electrodes is? ---------- Correct Answer ----------- Magnetic Flow Meters
What is the resister color code : Orange, White,Silver,Gold Band ---------- Correct Answer -------
---- .39 Ohms
Pitot tube measures? ---------- Correct Answer ----------- Measures Fluid or Gas Velocity
Chlorine Analyzer reads lower ever time but grab sample shows level are good. What do
troubleshoot first? ---------- Correct Answer ----------- Buffer
How to complete a work order when asked to maintain a pump? ---------- Correct Answer --------
--- Notify Operation, purchase parts, maintain, test, notify complete
What shunt resister rating to make 1-5V change on 4-20ma signal? ---------- Correct Answer -----
, ------ 250 ohms
HMI Screen down at the pump station, what to do? ---------- Correct Answer ----------- Ask
operator to monitor while you troubleshoot and try to fix
Where does the fluid enter in a Rotameter? ---------- Correct Answer ----------- Bottom
RPM on 4 pole 60 Hz motor ---------- Correct Answer ----------- 1800 RPM
For every 10 Celsius change in operating temp. What happen to motor wire insulation? ----------
Correct Answer ----------- Degrades 50%
What is it called when teaching someone Electrical Task Training? ---------- Correct Answer -----
------ Safety Task Training
Personnel injured when working around machines/equipment depending what they do. Based on
this: What two classification? ---------- Correct Answer ----------- Authorized-Affected
Resistors wired in parallel on battery 5 ohms, 10 ohms, and 20 ohms.
what must be the voltage to force 2.4 amp ? ---------- Correct Answer ----------- 6.84 V
Best way to test someone after training them? ---------- Correct Answer ----------- Have them
teach others or have them perform the task under supervision
What is amperage 1000 Watts pulled through 12.5 ohms? ---------- Correct Answer ----------- 8.9
amps
What is one way to prolong life of vertical shaft well motor? ---------- Correct Answer -----------
make sure plenty of grease, lube bearings, make sure fail seal hooked up
Grounding analog signal both end of wire or one end only? ---------- Correct Answer -----------
Ground only one end analog of wire
.15KvA transformer 480-120. How much amps can you pull on 120 side? ---------- Correct
Answer ----------- 1.25 amps 150/120=1.25 amp
What are transformer measured in? ---------- Correct Answer ----------- KVA
What should flow meter read in this open-channel thing? 36" wide 30" water depth flow is 2 feet
per second ---------- Correct Answer ----------- 9.69 MGD
If equipment failure is the condition in which a piece of equipment does not operate as intended -
--------- Correct Answer ----------- Failure Report
What is the highest Category? ---------- Correct Answer ----------- Category 4
