CWEA ELECTRICAL GRADE 2 STUDY CORRECT
QUESTIONS AND ANSWERS RATED A+
✔✔The most commonly used type of diagram in
process control is: - ✔✔piping and instrument drawing
✔✔When Taking a flow measurement the measuring device is performing what type of
calculation? - ✔✔Root mean square
✔✔A 480V, 3 phase motor, Delta connected, has one leg shorted, what will the
resistance be compared to the other legs - ✔✔A. Greater
*B. Lower
C. Same
D. Greater or lower
✔✔A 12V battery rated to provide 1amp for 20 hours across a 2000w load. How long
will the battery continue to produce an output? - ✔✔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. - ✔✔Do Calculations
✔✔A 36" pipe has an elevation gain of 300', the process reaches an elevation of 200'.
What is the PSI? - ✔✔Do Calculation
✔✔A pipe has a 10" opening , and produces 2500 GPM. How many cubic feet/sec? -
✔✔Do Calculations
, ✔✔How is true power expressed? I am not sure if these were the exact possible
answers, but they are close - ✔✔KW
✔✔You took apart a 3 phase motor, meggered a motor lead to the housing, and read
5000 ohms. What does this mean? - ✔✔B. Motor is fine
✔✔A 500hp, 3 phase, 460v, 8-pole, 900 rpm motor is connected to a 5:1 gear box.
What is the rpm of the output shaft? Forget about all the needless information. The
question gives the rpm of the motor that's all you need. - ✔✔Do Calculations
✔✔What drawing does a PLC use? - ✔✔Ladder
✔✔What does NFPA820 cover? - ✔✔Wastewater and Collections
✔✔When should you megger a motor for its lowest insulation readings? -
✔✔Immediately after shutting down equipment.
✔✔In a start stop control circuit, an additional two stop buttons are to be added. These
stop buttons should be installed in which way? - ✔✔In series with the existing stop
✔✔Redline drawings are best described as? - ✔✔A way for contractors to show
additional work and changes to the system.
✔✔Redlines should be used to? - ✔✔Check the engineer
✔✔Best way to check a 4-20ma signal? - ✔✔Place DMM selector to mA and put leads
in series with the circuit.
✔✔What is the most important step when performing a megger test? - ✔✔Put the leads
together and verify a direct short
✔✔A diaphragm type gauge protector is used in which type of environment? -
✔✔Corrosive
✔✔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? - ✔✔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.
QUESTIONS AND ANSWERS RATED A+
✔✔The most commonly used type of diagram in
process control is: - ✔✔piping and instrument drawing
✔✔When Taking a flow measurement the measuring device is performing what type of
calculation? - ✔✔Root mean square
✔✔A 480V, 3 phase motor, Delta connected, has one leg shorted, what will the
resistance be compared to the other legs - ✔✔A. Greater
*B. Lower
C. Same
D. Greater or lower
✔✔A 12V battery rated to provide 1amp for 20 hours across a 2000w load. How long
will the battery continue to produce an output? - ✔✔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. - ✔✔Do Calculations
✔✔A 36" pipe has an elevation gain of 300', the process reaches an elevation of 200'.
What is the PSI? - ✔✔Do Calculation
✔✔A pipe has a 10" opening , and produces 2500 GPM. How many cubic feet/sec? -
✔✔Do Calculations
, ✔✔How is true power expressed? I am not sure if these were the exact possible
answers, but they are close - ✔✔KW
✔✔You took apart a 3 phase motor, meggered a motor lead to the housing, and read
5000 ohms. What does this mean? - ✔✔B. Motor is fine
✔✔A 500hp, 3 phase, 460v, 8-pole, 900 rpm motor is connected to a 5:1 gear box.
What is the rpm of the output shaft? Forget about all the needless information. The
question gives the rpm of the motor that's all you need. - ✔✔Do Calculations
✔✔What drawing does a PLC use? - ✔✔Ladder
✔✔What does NFPA820 cover? - ✔✔Wastewater and Collections
✔✔When should you megger a motor for its lowest insulation readings? -
✔✔Immediately after shutting down equipment.
✔✔In a start stop control circuit, an additional two stop buttons are to be added. These
stop buttons should be installed in which way? - ✔✔In series with the existing stop
✔✔Redline drawings are best described as? - ✔✔A way for contractors to show
additional work and changes to the system.
✔✔Redlines should be used to? - ✔✔Check the engineer
✔✔Best way to check a 4-20ma signal? - ✔✔Place DMM selector to mA and put leads
in series with the circuit.
✔✔What is the most important step when performing a megger test? - ✔✔Put the leads
together and verify a direct short
✔✔A diaphragm type gauge protector is used in which type of environment? -
✔✔Corrosive
✔✔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? - ✔✔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.
