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NERC Practice Test (2024 / 2025) Questions with Verified Answers, 100% Guarantee Pass Score

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NERC Practice Test (2024 / 2025) Questions with Verified Answers, 100% Guarantee Pass Score A transmission line is operating with a voltage phase angle different of 30 degrees between the sending Vs and the receiving busVr. If the receiving endload is suddenly increased, the voltage phase angle d...

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  • October 9, 2024
  • 54
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • NERC
  • NERC
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Practice Test NERC Questions.pdf file:///C:/Users/HP/Desktop/New%20fl/Practice%20Test%20NERC




NERC Practice Test Questions & Answers



1. A transmission line is operating with a voltage phase angle different of 30 degrees

between the sending Vs and the receiving bus Vr. If the receiving endload is suddenly

increased, the voltage phase angle difference will be?

Answer The phase angle will increase. When load is increased phase angle will increase.



2. A load has a power factor of 0.9 lagging. If the load draws 100 MVA, what isthe MW

draw?

Answer 90 pf= mw/mva



3. The high side of a delta-wye connection transformer is connected to a powersystem with

199 kV L-G high side voltage. What is the voltage across the delta winding of the

transformer?

Answer Vl-l= square root of 3 times Vl-g 1.73x191= 345kV



4. If a transmission line is carrying 400 MW and 300 MVAR what is the MVA?-





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Answer 3-4-5 triangle 500 MVA



5. The prime mover is the component of the generator that creates the rota- tional force.

In a typical coal fired steam generator what component spins therotor?

Answer Turbine



6. Reactive reserve response during a disturbance is best obtained fromwhich

devise?

Answer Synchronous condensers



7. For two identically constructed transmission lines where Line A is 150 mileslong and line

B is 15 miles long, if both lines are lightly loaded?

Answer A produces more reactive power than B.



8. Lightly loaded transmission lines essentially behave like?

Answer Shunt Capacitors







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9. You receive an alarm that indicates low oil pressure on an underground transmission

cable. SCADA shows the pressure is continuing to drop. Whatis the first step you take to

protect the line?

Answer Isolate the line



10. Computer simulations show that for a 100 MW schedule from Bus A to BusB, 63% of

the schedule will flow on the scheduled path and the remainder willflow on other parallel

paths. What is the distribution factor for the scheduled path?

Answer 63%



11. Which statement best describes how reactive power MVAR power normally flows?

Answer High Voltage to Low Voltage



12. Which of the following types of data are BA and RC not required to share with one

another?

Answer Generator start up cost



13. TOP must develop, maintain, and implement formal policies and proce- dures to





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provide for transmission reliability.Which of the following DOES NOTneed to be addressed

in these policies and procedures?

Answer Planned outages of generation units



14. A 1000 MVA rated generator that produces 800 MW and 100 MVAR is bestdescribed

as?

Answer Operating in a lagging mode. Inductive system



15. Which of the following types of MW load is the most impacted by anintentional

frequency reduction?

Answer Motor









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