NERC ACTUAL EXAM - - 100% CORRECT ANSWERS/ NERC RE AL EXAM QUESTION...

NERC ACTUAL EXAM -

WITH 400 PRACTICE QUESTIONS AND

100% CORRECT ANSWERS/ NERC RE AL

EXAM QUESTIONS AND CORRECT

ANSWERS GRADED A+ (BRAND NEW!!)

• Line A has an SOL of 250 MVA and is currently loaded at 200 MVA) Line B is

loaded at 500 MVA 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?

A) 300 MVA

B) 325 MVA

C) 290 MVA

D) 245 MVA

A) 300 MVA

• 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?

• The Balancing Authority's total demand indication will increase
• The Balancing Authority's generators on AGC will decrease output
• The Balancing Authority's frequency will decrease
• The Balancing Authority's ACE reading will increase
• The Balancing Authority's total demand indication will increase
• A Reliability Coordinator receives a Time Error notification to begin at the top

of the hour and last for 6 hours. Whom does the RC notify of a Time Error correction?

• All Balancing Authorities in the Interconnection
• Balancing Authorities in its area
• Post it on RCIS
• RC implements time error correction for their BA
• Balancing Authorities in its area 1 / 4

• Which of the following indications would result from a significant loss of

generation on an external BA?

• your ACE goes up and frequency stays the same
• your ACE stays the same and frequency increases
• your ACE stays the same and frequency decreases
• your ACE goes down and frequency drops
• your ACE stays the same and frequency decreases
• You have restored a line to service after an outage. After closing the line, one of

the phases shows no current flow. What is your next action?

• Have the on-site crew open the line
• Notify your RC
• Call the crew that restored the line to check reading on each phase
• Report RTU problem
• Call the crew that restored the line to check reading on each phase
• Which of the following would classify as an Operating Instruction?
• Requesting generator status from a Generator Operator
• Discussing Operating Plan with an Adjacent Transmission Operator
• Directing a Generator Operator to maintain current MVAR output of a

generator

• Requesting outage information from a Distribution Provider
• 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?

• Take your CTs off-line
• Increase Interchange out
• Curtail solar power production
• Consider available spinning reserve and replace resources planned for the day
• Take your CTs off-line
• How can you more effectively increase the MW transfer rate through a

transmission line? 2 / 4

• Decrease Voltage on the sending end
• Change taps on the Phase Shifting Transformer (PST)
• Increase load on the receiving end
• Install series reactor in the line
• 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?

• To protect the turbine from damage
• To protect the generator windings from overheating
• To rebalance generation and load and arrest the frequency drop
• To prevent islanding conditions
• To protect the turbine from damage
• What is the expected inrush of cold load?
• less than 5 times the MVA
• up to 10 times the MVA
• up to 20 times the MVA
• no changes in MVA
• 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) 800MW

C) 640 MW

D) 1200 MW

B) 800MW

• Balancing Authority A is importing MW and has a tie-Iine flowing into them

when the meter fails to zero. Which of the following statements is true?

• The Balancing Authority's frequency will drop
• The Balancing Authority's generators on AGC will decrease output
• The Balancing Authority's frequency will increase
• The Balancing Authority's ACE reading will decrease
• The Balancing Authority's generators on AGC will decrease output 3 / 4

• A Balancing Authority is in an EEA 1, what must the Balancing Authority do

prior to moving to the next EEA Level?

• Inform the Transmission Operator and Reliability Coordinator
• Ensure operating reserve in place, additional transaction purchases are

scheduled, and all available generation online

• Shed all non-firm load
• Ensure operating reserve in place, all purchases scheduled, and all non-firm

load has been shed

• Ensure operating reserve in place, additional transaction purchases are

scheduled, and all available generation online

• A system operator is trying to synchronize lines A and 8. Voltage at A is 125

kV and Voltage at B is 115 kV. Reactive reserves are at their maximum output.What action should the system operator take first?

• Increase Generation at B
• Decrease Generation at A
• Shed Load electrically close to Station B
• Increase Load at Station A
• Increase Load at Station A ( to lower V)
• In order to be considered controllable load or contingency reserves the load

must be...?

• Non-Critical
• SCADA Controlled
• Able to reduce within a specific time period
• Non-Firm Load
• Able to reduce within a specific time period
• On a transmission line that flows Station A to Station B, Station B is open and

unable to close due to excessively high voltage at Station B). What device can the system operator use at Station A to mitigate this system problem?

• Insert a Shunt Capacitor
• Insert a Series Capacitor
• Insert Shunt Reactor
• Bypass a Series Capacitor
• / 4