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Exam (elaborations)

NERC Transmission Practice Test, Exam Q&As, A+ Guide

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  • Course
  • NERC Transmissio
  • Institution
  • NERC Transmissio

NERC Transmission Practice Test, Exam Q&As, A+ Guide-Station #1 is at 539KV and station #2 is at 534 KV. Which direction will the MVAR typically flow? A. From station #1 to station #2 B. From station #2 to station #1 C. Downhill based on power angle D. Uphill based on power angle - A. From stat...

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  • February 24, 2023
  • 18
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • NERC Transmissio
  • NERC Transmissio
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NERC Transmission Practice Test, Exam
Q&As, A+ Guide
Station #1 is at 539KV and station #2 is at 534 KV. Which direction will the
MVAR typically flow?
A. From station #1 to station #2
B. From station #2 to station #1
C. Downhill based on power angle
D. Uphill based on power angle - A. From station #1 to station #2

Each transmission operator shall arrange for supply of _____ resources within its
boundaries to protect the voltage levels under contingency conditions
A. Transmission
B. Generation
C. Reactive
D. Regulating - C. Reactive

Relay schemes should be designed so that automatic re-closing during _____
conditions should be prevented
A. System restoration
B. TLR
C. Out of step
D. Thunderstorm - C. Out of step

You received indication that all of the CBs on a bus have opened and locked out,
which of the following relays would you have expected to operate?
A. 59G
B. 87B
C. 87T
D. 21-1 - B. 87B

High speed relays, high-speed circuit breakers, and ____ should be used where
studies indicate the application will enhance stability margins
A. Automatic voltage regulators
B. Automatic re-closings

,C. Special protection schemes
D. Under frequency relaying - B. Automatic re-closings

Dynamic thermal ratings are ratings that limit transmission line loading
A. With a conservative mindset
B. With current temperature and wind speed
C. Based on current transaction schedules
D. Based on projected transaction schedules - B. With current temperature and
wind speed

In order for each transmission operator to protect its system voltage levels under
normal and contingency conditions, they must acquire which of the following?
A. Sufficient reactive resources
B. Dynamic reactive resources
C. Sufficient generation supplies
D. Sufficient transmission capacity - A. Sufficient reactive resources

Which of the following would be a concern if you were operating on the system
with an open ended transmission line?
A. Ferranti-rise effect
B. Transmission Loop flows
C. Exceeding surge impedance loading
D. Reactive depletion - A. Ferranti rise effect

Which of the following devices would you use if you were calculating dynamic
reactive reserve for your systems
A. Shunt reactors
B. Transformers
C. Shunt capacitors
D. Generators - D. Generators

Which of the following is an advantage of coordinating planned transmission
outages?
A. Ensure system reliability
B. Increasing transmission overloads
C. Keeping information away from generators

, D. Not having to post on OASIS - A. Ensure system reliability

If your system experiences an operating security limit violation, as an operator,
you are supposed to return your transmission system to within its limits as soon as
possible, but no longer than how many minutes?
A. 10 minutes
B. 20 minutes
C. 30 minutes
D. 60 minutes - C. 30 minutes

Which of the following system elements would be considered reactive power
sources?
1. Generators
2. Shunt reactors
3. Transformers
4. Synchronous condensers

A. 1 & 3
B. 2 & 3
C. 3 & 4
D. 1 & 4 - D. 1 & 4

If a transmission line is open ended, where is the highest voltage experienced on
the line?
A. On the closed end of the line
B. On the open end of the line
C. The voltage is the same on both ends of the line
D. There is no voltage since it is open on one end - B. On the open end of the line

If a transmission operator is requested to operate a transmission line to its short
time rating, this means that the facility can be operated above which of the
following?
A. Normal continuous rating
B. Emergency rating
C. 150% of the line rating
D. 175% of the MVA limit - A. Normal continuous rating

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