NETA 2 exam 1 Questions with Correct
Answers
What is the purpose of a one-line diagram?
To illustrate the flow of electrical power and how circuits are connected
At what voltage level are secondary class arresters typically applied?
999V or less
The incident energy of an arc flash depends on which of the following?
How quick the current can be shut off
How much current is available during a fault
How far away a worker is from the arc source
All of the answers are correct
All of the answers are correct
A given oil filled XFMR manufactures prior to 2000 has fans to blow air across its
cooling surface. What is the class of this XFMR
OA/FA/OFA (Oil-Air/Forced Air/Oil Forced Air)
A SCADA system will only monitor and never make changes to the operations.
True or false?
False
What might a power system see increased evidence of due to electrical vehicle charging
stations?
Harmonic distortion
, In the MCOV example for a 13.8kV solidly grounded system, which arrester rating
would be necessary?
12kV arrester with an MCOV of 10.2kV
Which of the following systems or materials should not be used as grounding
electrodes?
Metal underground gas piping system
Aluminum
Both
Both
A class of nominal system voltages equal to or greater than 100,000 volts and equal to or
less than 230,000 volts is defined as:
High voltage
You measure the winding resistance of a 12.4kV, 1000kVA, Delta-Delta connected
transformer with a 100A test set. H1-H2 measures 42.0 microhms, H2-H3 measures 41.9
microhms, and H3-H1 measures 84.0 microhms. What can you conclude from these
readings?
One phase of the XFMR is open
10 microhms is equivalent to how many ohms?
0.00001
According to NETA-ATS, insulating gas analysis on an SF6 switch would include:
Answers
What is the purpose of a one-line diagram?
To illustrate the flow of electrical power and how circuits are connected
At what voltage level are secondary class arresters typically applied?
999V or less
The incident energy of an arc flash depends on which of the following?
How quick the current can be shut off
How much current is available during a fault
How far away a worker is from the arc source
All of the answers are correct
All of the answers are correct
A given oil filled XFMR manufactures prior to 2000 has fans to blow air across its
cooling surface. What is the class of this XFMR
OA/FA/OFA (Oil-Air/Forced Air/Oil Forced Air)
A SCADA system will only monitor and never make changes to the operations.
True or false?
False
What might a power system see increased evidence of due to electrical vehicle charging
stations?
Harmonic distortion
, In the MCOV example for a 13.8kV solidly grounded system, which arrester rating
would be necessary?
12kV arrester with an MCOV of 10.2kV
Which of the following systems or materials should not be used as grounding
electrodes?
Metal underground gas piping system
Aluminum
Both
Both
A class of nominal system voltages equal to or greater than 100,000 volts and equal to or
less than 230,000 volts is defined as:
High voltage
You measure the winding resistance of a 12.4kV, 1000kVA, Delta-Delta connected
transformer with a 100A test set. H1-H2 measures 42.0 microhms, H2-H3 measures 41.9
microhms, and H3-H1 measures 84.0 microhms. What can you conclude from these
readings?
One phase of the XFMR is open
10 microhms is equivalent to how many ohms?
0.00001
According to NETA-ATS, insulating gas analysis on an SF6 switch would include:
