I passed the NETA 2 Exam yesterday. I have some pointers.
First, there is a lot of electrical theory on the exam. Get comfortable with inductors, capacitors, resistors, series/parallel calculations for all of these, voltage drop calculations. Remember voltage in a loop sums to zero.
Taking these practice exams on TestGuy will not be enough. Read the article attached when you miss a question. Often, the article attached is published by NETA, so it’s likely you will see that content on the exam. I saw about 5 questions from TestGuy on the NETA exam.
Know the differences in circuit breakers, know about circuit switchers and general switches. Several questions for me about switchgear.
Some questions I remember:
Define the sequence required to verify the operation of a voltage detector.
Which type of battery requires temperature monitoring?
Calculate the voltage drop across a 5mH inductor in series with a 250Ohm resistor given a 120V 60Hz source.
Know the allowance for TTR results (can’t remember how the question was phrased) regarding the calculated ratio and adjacent coils.
What type of switch would be used for industrial 3000-4000A application?
- this question I recognized from test guy. I picked Bolted Pressure switch.
Know what all of the equipment in the Components section of the exam looks like, front and back. Some equipment I was asked about were load break vs dead break elbows, segregated or non-segregated bus duct, metal clad switchgear, motor control center.
Synchronous vs induction motors.
What is the primary purpose of a line sectionalizer?
Protective element primarily used for motors
A new circuit breaker has been tested and is ready to be racked into its cell. Once racked in, the operator initiates a close. The breaker trips free and will not close back. What could be the cause?
What is the insulation for a 27kV recloser?
Know about zone selective interlocking and what type of protection/advantage it provides for a system.
Advantages/disadvantages of fiber optics.
Read a surge arrester nameplate and identify the insulation rating.
Know the connections for a TTR test by only looking at the nameplate.
Only 1 question about UPS systems and 1 about EV chargers for me.
Polarization index:
10 min/1min
1min/10 min
1min/30 secs
30secs/1min
What I found myself struggling with the most is when they asked what is a required test for a given component. Some answers were eliminated easily but then I would be stuck between 2 choices. They also would phrase the question like “what would you look for during a visual inspection for….” and they would list a few mechanical inspections, so do not get tricked by that.
