Exam (elaborations)
NERC Certification. After Class Exam Questions with Accurate Answers
- Course
- Institution
NERC Certification. After Class Exam
[Show more]
Content preview
NERC Certification. After Class ExamBalancing Authority A is importing MW and has a tie-line flowing into them when the
meter fails to zero. Which of the following statements is true?
a . The Balancing Authority's frequency will drop
b . The Balancing Authority's generators on AGC will decrease output
c. The Balancing Authority's frequency will increase
d. The Balancing Authority's ACE reading will decrease - answerb . The Balancing
Authority's generators on AGC will decrease output
Balancing Authority A has tie - line meter fail to zero on a line that is exporting 200 MWs
. Which of the following statements is true ?
a . The Balancing Authority's total demand indication will increase
b . The Balancing Authority's generators on AGC will decrease output
c . The Balancing Authority's frequency will decrease
d . The Balancing Authority's ACE reading will increase - answera . The Balancing
Authority's total demand indication will increase
How does a System Operator realize the power system is getting close to the end of its
available reactive resources ?
a. The voltage is increasing
b. The rate of decrease / increase of the voltage does not relate to change in the load
c. The rate of increase of the voltage decreases with the load
d . The rate of decrease of the voltage increases with the load - answerd . The rate of
decrease of the voltage increases with the load
Which of the following indications would result from a significant loss of generation on
an external BA ?
a. your ACE goes up and frequency stays the same
b. your ACE stays the same and frequency increases
c. your ACE stays the same and frequency decreases
d. your ACE goes down and frequency drops - answerc. your ACE stays the same and
frequency decreases
You have restored a line to service after an outage . After shows no current flow . What
is your next action ? closing the line , one of the phases
a. Have the on - site crew open the line
b. Notify your RC
,c. Call the crew that restored the line to check reading on each phase
d . Report RTU problem - answerc. Call the crew that restored the line to check reading
on each phase
Which of the following would classify as an Operating Instruction ?
a. Requesting generator status from a Generator Operator
b. Discussing Operating Plan with an Adjacent Transmission Operator
c. Directing a Generator Operator to maintain current MVAR output of a generator
d. Requesting outage information from a Distribution Provider - answerc. Directing a
Generator Operator to maintain current MVAR output of a generator
After the winter morning peak , you have CTs base loaded unable to decrease output
and other units unable to regulate any lower . Nuclear units are loaded and your solar is
starting to pick up . ACE is trending up and you have no regulation . What would you
do ?
a . Take your CTs off-line
b . Increase Interchange out
c . Curtail solar power production
d . Consider available spinning reserve and replace resources planned for the day -
answera . Take your CTs off-line
How can you more effectively increase the MW transfer rate through a transmission line
?
a. Decrease Voltage on the sending end
b. Change taps on the Phase Shifting Transformer (PST)
c. Increase load on the receiving end
d. Install series reactor in the line - answerb. Change taps on the Phase Shifting
Transformer (PST)
Generators will trip on an under - frequency condition of approximately 57.5 Hz . What
is the purpose of generator under-frequency trips?
a. To protect the turbine from damage
b. To protect the generator windings from overheating
c. To rebalance generation and load and arrest the frequency drop
d. To prevent islanding conditions - answera. To protect the turbine from damage
What is the expected inrush of cold load ?
a . less than 5 times the MVA
b . up to 10 times the MVA
c . up to 20 times the MVA
d . no changes in MVA - answerb . up to 10 times the MVA
, A Balancing Authority Area has two 800 MW generators , three 400 MW generators ,
and many generators less than 200 MW . What is the MSSC for this Balancing Area ??
a. 1600 MW
b. 800 MW
c. 640 MW
d. 1200 MW - answerb. 800 MW
But 640MW is the reportable event threahold
Line A has an SOL of 250 MVA and is currently loaded at 200 MVA . Line B is and has
an LODF of 0.2 to Line A. If Line B relays out what will be the new power flow on Line
A ? loaded at 500 MVA
a. 300 MVA
b. 325 MVA
c. 290 MVA
d. 245 MVA - answera. 300 MVA
A Balancing Authority is in an EEA 1 , what must the Balancing Authority do prior to
moving to the next EEA Level ?
a. Inform the Transmission Operator and Reliability Coordinator
b. Ensure operating reserve in place , additional transaction purchases are scheduled ,
and all available generation online
c. Shed all non - firm load
d. Ensure operating reserve in place , all purchases scheduled , and all non - firm load
has been shed - answerd. Ensure operating reserve in place , all purchases scheduled ,
and all non - firm load has been shed
Line 1 SOL is 250 MVA , Line 3 has an OTDF of 0.25 to line 1. If line 3 relays out what
will be the SOMVAR Line 1 loading on Line 1 and will it be within its SOL limit ?
Line 1 - 200MVA, 50MVAR
Line 2 - 150MVA, 30MVAR
Line 3 - 300MVA, 0.25 OTDF
a . 220 / No
b . 250 / Yes
C. 275 / No
d . 275 / Yes - answerC. 275 / No
Which curve best represents the Ferranti effect ?
a. 1
b. 2
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller julianah420. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77254 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now