Docsity
Log inSign up
Docsity
Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity

Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan

Guidelines and tips
Guidelines and tips
Sell on Docsity
Sell on Docsity
Log inSign up

Prepare for your exams

Study with the several resources on Docsity

Find documents

Prepare for your exams with the study notes shared by other students like you on Docsity

Search Store documents

The best documents sold by students who completed their studies

Search through all study resources
Docsity AINEW

Summarize your documents, ask them questions, convert them into quizzes and concept maps

Explore questions

Clear up your doubts by reading the answers to questions asked by your fellow students

Earn points to download

Earn points by helping other students or get them with a premium plan

Share documents
download point icon20 Points

For each uploaded document

Answer questions
download point icon5 Points

For each given answer (max 1 per day)

All the ways to get free points
Get points immediately

Choose a premium plan with all the points you need

Study Opportunities

Choose your next study program

Get in touch with the best universities in the world. Search through thousands of universities and official partners

Community

Ask the community

Ask the community for help and clear up your study doubts

University Rankings

Discover the best universities in your country according to Docsity users

Free resources

Our save-the-student-ebooks!

Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors

From our blog

Exams and Study
Go to the blog

NERC RC Exam | Actual Questions and Answers Latest Updated 2025/2026 (Graded A+), Exams of Electrical Engineering

Bismarck State College (BSC)Electrical Engineering

System studies identify what - ✔✔Predict operations and identify constraints If ACE remains the same and frequency goes up what has happened? - ✔✔Someone lost load When a generator has its AVR in service it is a? - ✔✔Dynamic source of reactive power Black start resource testing is done every? - ✔✔3 years Each BA shall operate its AGC on? - ✔✔Tie line Frequency Bias

Typology: Exams

2024/2025

Available from 06/29/2025

WINGS_TO-FLY
WINGS_TO-FLY 🇺🇸

1

(1)

1.1K documents

1 / 6

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
NERC RC Exam | Actual Questions and Answers Latest Updated 2025/2026
(Graded A+)
System studies identify what - ✔✔Predict operations and identify constraints
If ACE remains the same and frequency goes up what has happened? - ✔✔Someone lost load
When a generator has its AVR in service it is a? - ✔✔Dynamic source of reactive power
Black start resource testing is done every? - ✔✔3 years
Each BA shall operate its AGC on? - ✔✔Tie line Frequency Bias
When is voltage reduction reportable? - ✔✔Greater than 3%
Reactors do what? - ✔✔Absorb VARs
What AGC mode should a generator use when islanded? - ✔✔Flat Frequency
Implement back up functionality plan within? - ✔✔2 hours
Who submits the request for interchange for an emergency transaction? - ✔✔The sink BA
Transmission lines that are heavily loaded do what? - ✔✔Absorb VARs
Undervoltage load shedding is designed to? - ✔✔Reduce power flow into an area
A generator will increase output when? - ✔✔Frequency decreases
pf3
pf4
pf5

Partial preview of the text

Download NERC RC Exam | Actual Questions and Answers Latest Updated 2025/2026 (Graded A+) and more Exams Electrical Engineering in PDF only on Docsity!

NERC RC Exam | Actual Questions and Answers Latest Updated 202 5 /202 6

(Graded A+)

System studies identify what - ✔✔Predict operations and identify constraints If ACE remains the same and frequency goes up what has happened? - ✔✔Someone lost load When a generator has its AVR in service it is a? - ✔✔Dynamic source of reactive power Black start resource testing is done every? - ✔✔ 3 years Each BA shall operate its AGC on? - ✔✔Tie line Frequency Bias When is voltage reduction reportable? - ✔✔Greater than 3% Reactors do what? - ✔✔Absorb VARs What AGC mode should a generator use when islanded? - ✔✔Flat Frequency Implement back up functionality plan within? - ✔✔ 2 hours Who submits the request for interchange for an emergency transaction? - ✔✔The sink BA Transmission lines that are heavily loaded do what? - ✔✔Absorb VARs Undervoltage load shedding is designed to? - ✔✔Reduce power flow into an area A generator will increase output when? - ✔✔Frequency decreases

EEA 3 - ✔✔Anticipating or implementing firm load interruption What is the relation to frequency and load when islanded? - ✔✔To increase frequency 1 Hz you must shed 6-10% of load Zone 2 - ✔✔ 120 - 150% of the line. Backup for Zone 1. What resource should be used during high load periods? - ✔✔Capacitive Who do you notify about curtailed interchange? - ✔✔All BA's on scheduled path. If providing overlap modify your? - ✔✔Frequency Bias setting When do you reduce power flows and increase generation? - ✔✔During low voltage EEA 2 - ✔✔Excluding shedding firm load In what part of the ACE equation is dynamic schedules accounted for? - ✔✔NIs Zone 3 - ✔✔ 130 - 300% of a line What is reduced when power lines are connected in parallel? - ✔✔Impedance If frequency and ACE goes down what has happened? - ✔✔You lost load What do capacitors do? - ✔✔Increase VARs

A. Induction motors B. Motor type load C. Nominal load D. Non-motor type load - ✔✔D P-V curves indicate the margin from voltage instability while V-Q curves indicate the margin from voltage instability. A. Mvar / MW B. MW/ Mvar C. MW / current D. Power / Mvar - ✔✔B. MW/ Mvar UVLS differs from UFLS in that: A. The tripping frequencies are different B. The tap changing points are different C. UVLS is based on voltage while UFLS is based on frequency D. UVLS is based on frequency while UFLS is based on voltage - ✔✔C. UVLS is based on voltage while UFLS is based on frequency Power flow - ✔✔Transfer of power either MW or MVAR over transmission or distribution line. Operating Reserves - ✔✔Capability above firm system demand required for regulation and forced equipment outages. Reactive Reserves - ✔✔Amount of MVAR or reactive power that can be instantaneously accessed in the power system. SOL - ✔✔Satisfaction of the most limiting operating criteria. When impedance is increased so is? - ✔✔Reactive power usage. MVAR

When voltage levels need to be increased the solution is to? - ✔✔Introduce Reactive Resources. MW and MVAR follow the path of? - ✔✔Least Impedance How does a Generator increase its voltage? - ✔✔Increasing DC excitation current What happens when you increase DC excitation current - ✔✔You increase internal voltage, which leads to more MVAR flowing out of the generator Transmission lines provide what during light loading? - ✔✔MVAR Transmission lines absorb what during heavy loading? - ✔✔Reactive power What is a loss of synchronisim? - ✔✔Magnetic bond is weak What are the three power flow/power transfer limits? - ✔✔Thermal, stability, voltage Thermal limits are the result of what? - ✔✔Thermal capability

  • ✔✔When a generator is supplying reactive power to the system, the generator mode of operation is referred to as lagging, boosting, pushing or overexcited. When a generator is absorbing reactive power from the system, the generator mode of operation is referred to as leading, bucking, pulling or underexcited. The capacitive effect of a transmission line is dependent on system - ✔✔Frequency The greater the frequency the more a line naturally produces - ✔✔Mvar