NERC Questions Set 1 Questions with Correct
Answers.
What is the difference between the voltages at one point as compared to a reference
point called? - Correct Answer Voltage Phase Angle
What is the voltage phase angle difference between two points or locations on the
system? - Correct Answer Power Angle
MWs flow from greater ____ voltage angle to ____ voltage angle. - Correct Answer
leading, lagging
As power angle ____, power transfers from generation to the power system ____. -
Correct Answer increases, increase
Real power flows from ____ voltage angle to ____, also said to flow downhill. - Correct
Answer higher, lower
The higher the voltages, the more power can be transferred for a given ____. The
smaller the ____, the greater the amount of power can be transferred. - Correct Answer
power angle, impedance
When a generator is synched to the power system and not yet putting MWs in the
system, what is the torque angle?
When more steam is put into the turbine, the rotor magnetic field moves slightly ahead
of the stator magnetic field, increasing torque angle. As torque angle increases, P must
flow from the generator to the system. - Correct Answer 0 degrees.
What is it called when system parameters (V,f,P flows) may be changing but changes
are small and occur gradually? - Correct Answer Steady-state stability
What is the ability of a power system to overcome a sudden, large change without
violating operating limits, such as a major generator loss or severe system fault? -
Correct Answer Transient stability
What does this describe?
,- when relative angular acceleration causes the power angle to exceed 90 degrees for a
short period due to an increase in power transfer
- when a disturbance causes momentary power angle excursions greater than 90
degrees
- when heavy power transfers to 1 or more transmission segments, such as generation
loss - Correct Answer Transient instability
What is transmission line capacity determined by? - Correct Answer Thermal limits
What language does NERC require for all communications between and among
operating personnel responsible for real-time generation control and operation of the
Interconnected BES? - Correct Answer English
What shall operators have to enable continued operation of the system during telecomm
loss that are
- available, up-to-date, organized
- easy to follow during emergencies
- located near subject
- frequently used/practiced - Correct Answer Written procedures
What are the NERCnet Security Policy objectives? - Correct Answer - ensure NERCnet
information assets are adequately protected on a cost-effective basis and to a level that
allows NERC to fulfill its mission
- establish connectivity guidelines for a minimum level of security
- mandate all NERCnet users to properly handle and protect information
What does this describe?
- issue directives in a clear, concise, definitive manner
- ensure recipient repeats back correctly
- acknowledge as correct or repeat if misunderstood - Correct Answer 3-part
communication
, What does PER-001 require each BA and TOP to provide operators with to implement
real-time actions to ensure stable and reliable operation of the BES? - Correct Answer
responsibility and authority
PER-003 requires each RC to staff real-time operator positions performing RC
reliability-related tasks with system operators who demonstrate minimum competency in
the areas listed by obtaining and maintaining what? - Correct Answer Valid NERC RC
certificate
An operator may only perform functions for which he/she is ____ and may not perform
in other specialties. - Correct Answer certified
Each RC, BA, and TOP shall use ____ to establish a training program for BES
company-specific reliability-related tasks performed by system operators and shall
implement the program. - Correct Answer Systematic Approach to Training
How many times should each RC, BA, and TOP verify each system operator has the
capabilities to perform each task identified in company-specific, reliability-related task
list? - Correct Answer At least one time
Which elements make up power? - Correct Answer voltage, impedance, and current
How are System Operating Limits are determined? - Correct Answer - Setting
appropriate voltage levels to withstand various contingencies
- Identifying equipment loading capabilities before excessive heat degrades their
function
- Recognizing stability limitations
Each RC, BA, and TOP shall provide adequate and reliable communications facilities
for the exchange of Interconnection and operating information and these facilities shall
be ____. - Correct Answer redundant and diversely routed
Coordinating communications among Reliability Coordinators, Transmission Operators
and Balancing Authorities must include the ability to ____________. - Correct Answer
investigate and recommend solutions to telecommunications problems
Which of the following functions are supported by NERCNet?
Answers.
What is the difference between the voltages at one point as compared to a reference
point called? - Correct Answer Voltage Phase Angle
What is the voltage phase angle difference between two points or locations on the
system? - Correct Answer Power Angle
MWs flow from greater ____ voltage angle to ____ voltage angle. - Correct Answer
leading, lagging
As power angle ____, power transfers from generation to the power system ____. -
Correct Answer increases, increase
Real power flows from ____ voltage angle to ____, also said to flow downhill. - Correct
Answer higher, lower
The higher the voltages, the more power can be transferred for a given ____. The
smaller the ____, the greater the amount of power can be transferred. - Correct Answer
power angle, impedance
When a generator is synched to the power system and not yet putting MWs in the
system, what is the torque angle?
When more steam is put into the turbine, the rotor magnetic field moves slightly ahead
of the stator magnetic field, increasing torque angle. As torque angle increases, P must
flow from the generator to the system. - Correct Answer 0 degrees.
What is it called when system parameters (V,f,P flows) may be changing but changes
are small and occur gradually? - Correct Answer Steady-state stability
What is the ability of a power system to overcome a sudden, large change without
violating operating limits, such as a major generator loss or severe system fault? -
Correct Answer Transient stability
What does this describe?
,- when relative angular acceleration causes the power angle to exceed 90 degrees for a
short period due to an increase in power transfer
- when a disturbance causes momentary power angle excursions greater than 90
degrees
- when heavy power transfers to 1 or more transmission segments, such as generation
loss - Correct Answer Transient instability
What is transmission line capacity determined by? - Correct Answer Thermal limits
What language does NERC require for all communications between and among
operating personnel responsible for real-time generation control and operation of the
Interconnected BES? - Correct Answer English
What shall operators have to enable continued operation of the system during telecomm
loss that are
- available, up-to-date, organized
- easy to follow during emergencies
- located near subject
- frequently used/practiced - Correct Answer Written procedures
What are the NERCnet Security Policy objectives? - Correct Answer - ensure NERCnet
information assets are adequately protected on a cost-effective basis and to a level that
allows NERC to fulfill its mission
- establish connectivity guidelines for a minimum level of security
- mandate all NERCnet users to properly handle and protect information
What does this describe?
- issue directives in a clear, concise, definitive manner
- ensure recipient repeats back correctly
- acknowledge as correct or repeat if misunderstood - Correct Answer 3-part
communication
, What does PER-001 require each BA and TOP to provide operators with to implement
real-time actions to ensure stable and reliable operation of the BES? - Correct Answer
responsibility and authority
PER-003 requires each RC to staff real-time operator positions performing RC
reliability-related tasks with system operators who demonstrate minimum competency in
the areas listed by obtaining and maintaining what? - Correct Answer Valid NERC RC
certificate
An operator may only perform functions for which he/she is ____ and may not perform
in other specialties. - Correct Answer certified
Each RC, BA, and TOP shall use ____ to establish a training program for BES
company-specific reliability-related tasks performed by system operators and shall
implement the program. - Correct Answer Systematic Approach to Training
How many times should each RC, BA, and TOP verify each system operator has the
capabilities to perform each task identified in company-specific, reliability-related task
list? - Correct Answer At least one time
Which elements make up power? - Correct Answer voltage, impedance, and current
How are System Operating Limits are determined? - Correct Answer - Setting
appropriate voltage levels to withstand various contingencies
- Identifying equipment loading capabilities before excessive heat degrades their
function
- Recognizing stability limitations
Each RC, BA, and TOP shall provide adequate and reliable communications facilities
for the exchange of Interconnection and operating information and these facilities shall
be ____. - Correct Answer redundant and diversely routed
Coordinating communications among Reliability Coordinators, Transmission Operators
and Balancing Authorities must include the ability to ____________. - Correct Answer
investigate and recommend solutions to telecommunications problems
Which of the following functions are supported by NERCNet?
