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Examen

NERC CNP PRACTICE TEST 2025/2026 QUESTIONS AND VERIFIED ANSWERS

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NERC CNP PRACTICE TEST 2025/2026 QUESTIONS AND VERIFIED ANSWERS

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Dry steam plants, flash steam plants, and binary cycle power plants are the three main types of what

kind of generating plant?

A. Nuclear generators

B. Combustion turbine generators

C. Geothermal generators

D. Hydroelectric generators

C. Geothermal generators




If a reliability coordinator identifies that there is a potential transmission related problem in the area,

who should they notify?

A. Marketers in the area

B. Other reliability coordinators in the interconnection

C. All purchasing selling entities

D. Generation operators in the area of the potential problem

B. Other reliability coordinators in the interconnection




Restoration services on critical telecommunications channels should be available _____.

A. 24 hours per day

B. Within 12 hours of a telecommunication channel failure

C. By the end of the next business day

D. Within 72 hours of the contingency occurring

A. 24 hours per day




According to NERC, A balancing authority may elect to fulfill its contingency reserve obligations by

participating as a member of a _____

A. ISO

B. Reserve sharing group

C. RTO

,D. Regional reliability organization

B. Reserve sharing group




If you were to experience the northern lights what would be your concern with the operation of the

power system?

A. System harmonics causing oscillations

B. A reduction of MVAR consumption

C. Generator output reduction

D. Transformer overheating

D. Transformer overheating




Your BA has a net scheduled interchange of 650 MW and your actual interchange is 800 MW. The

frequency bias setting for your BA is 65 MW/0.1 Hz. There is a disturbance on the system and the

actual frequency is 60.02 Hz. What is your ACE?

A. -163 MW

B. -137 MW

C. 137 MW

D. 163 MW

D. 163 MW




Generators have the ability to be used as voltage control devices. If a generator raises its VAR output

the system operator should expect the system voltage to

A. Decrease

B. Increase

C. Not change

D. Collapse

B. Increase

,if a BA has 500 MW of spinning reserves and of that 300 are regulating reserves, by definition, NERC

requires the regulating reserves must be ____?

A. Online and AGC responsive

B. Able to ramp to full load within 10 minutes

C. Able to be online within 10 minutes

D. Able to be online within 5 minutes

A. Online and AGC responsive




There is a shunt capacitor on your system that has a rating of 50 MVAR @ 138 KV. The voltage at the

time of switching the capacitor in service is 124 KV. What would be the expected output of the

capacitor?

A. 45 MVAR

B. 43.5 MVAR

C. 50 MVAR

D. 40.5 MVAR

D. 40.5 MVAR




Which mode of AGC operation is the one that NERC states will be used unless such operation is

adverse to the system or interconnection Reliability?

A. Constant interchange

B. Tie-line Bias

C. Constant frequency

D. Load-frequency bias

B. Tie-line Bias




You have a 600 MW unit that is currently loaded at 300 MW and frequency drops .2 Hz. What will

the new output of the generator be as a result of the drop in frequency due to droop characteristic?

, A. 300 MW

B. 340 MW

C. 260 MW

D. 380 MW

B. 340 MW




If a BA is unable to calculate its ACE for more than ____ it shall notify its RC.

A. 15 minutes

B. 60 minutes

C. 30 minutes

D. 20 minutes

C. 30 minutes




The system frequency is currently 60.03 Hz. The Synchronized generating capacity is 3200 MW. The

system load is currently 2200 MW. What is the maximum amount of load block that should be

restored?

A. 160 MW

B. 220 MW

C. 110 MW

D. 320 MW

A. 160 MW




A balancing authority has a bias setting of -150 MW. The frequency falls .05 Hz due to an external

disturbance. How many MW would you expect this balancing authority area to provide to the

disturbance?

A. +150 MW

B. +75 MW

C. -150 MW

Información del documento

Subido en
2 de julio de 2025
Número de páginas
241
Escrito en
2024/2025
Tipo
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Preguntas y respuestas
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