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VA Alternative Energy System Contracting 121-240
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Question 121: Which design Correct Answer: B - Compliance with electrical and structural
consideration ensures that a PV standards
system meets local building
codes and safety regulations? Explanation: Adhering to local codes and standards is essential
to ensure both the safety and legality of the installation.
Option A: Module aesthetics
Option B: Compliance with
electrical and structural
standards
Option C: The brand of the
panels
Option D: The system's inverter
color
Question 122: What is the Correct Answer: B - To aggregate current from multiple strings
function of a solar combiner in a for easier connection to the inverter
photovoltaic system?
Explanation: The solar combiner collects and combines current
Option A: To split the DC power from several strings, simplifying the overall wiring scheme.
into multiple circuits
Option B: To aggregate current
from multiple strings for easier
connection to the inverter
Option C: To convert AC to DC
Option D: To provide surge
protection
,Question 123: Which electrical Correct Answer: B - Current
parameter is critical when
configuring PV modules in Explanation: In parallel connections, the currents of individual
parallel? strings add together, so managing current levels is essential.
Option A: Voltage
Option B: Current
Option C: Frequency
Option D: Resistance
Question 124: What is the Correct Answer: B - It indicates the range within which actual
significance of module "power power output may vary from the rated value
tolerance" in PV systems?
Explanation: Power tolerance specifies the allowable deviation
Option A: It determines the from the nominal power rating, affecting system performance
module's physical durability predictions.
Option B: It indicates the range
within which actual power
output may vary from the rated
value
Option C: It defines the module's
color variations
Option D: It measures the
module's efficiency in low light
Question 125: Which of the Correct Answer: B - Mismatch between module outputs
following is a common cause of
energy losses in a PV system? Explanation: Mismatches between modules (due to shading or
manufacturing variances) can lead to energy losses in the
Option A: Excessive inverter system.
capacity
Option B: Mismatch between
module outputs
Option C: Uniform module
orientation
Option D: Over-cleaning of
panels
Question 126: What does "system Correct Answer: B - Maximizing energy output and economic
design optimization" aim to efficiency
achieve in a PV installation?
Explanation: Optimization involves selecting and configuring
Option A: Minimizing installation components to achieve the best balance between energy
time production, cost, and reliability.
Option B: Maximizing energy
output and economic efficiency
Option C: Standardizing panel
colors
Option D: Reducing the number
of inverters
, Question 127: Which calculation Correct Answer: B - Solar altitude angle calculation
is necessary for determining the
proper tilt angle of PV panels? Explanation: The tilt angle is derived from the solar altitude and
latitude, maximizing the panels' exposure to sunlight.
Option A: Electrical load
calculation
Option B: Solar altitude angle
calculation
Option C: Inverter capacity
calculation
Option D: Module string
configuration
Question 128: What is one of the Correct Answer: B - Accumulation of snow reducing light
challenges of installing PV absorption
systems in areas with heavy
snowfall? Explanation: Snow can cover PV panels, blocking sunlight and
thereby reducing the system's energy production.
Option A: Increased wiring
complexity
Option B: Accumulation of snow
reducing light absorption
Option C: Excessive inverter
capacity
Option D: Overheating of
modules
Question 129: Which of the Correct Answer: B - Determining the number of panels to
following best describes "string connect in series for proper voltage
sizing" in the context of PV
installations? Explanation: String sizing is the process of arranging modules in
Option A: Choosing the series to achieve a target voltage that matches system
appropriate module mounting requirements.
hardware
Option B: Determining the
number of panels to connect in
series for proper voltage
Option C: Calculating the array's
physical dimensions
Option D: Deciding the color of
the panels
Question 130: Which factor is Correct Answer: B - Solar access and shading analysis
most critical when selecting the
location for a ground mounted Explanation: The site must have unobstructed sunlight for optimal
PV array? performance, making shading analysis a critical selection factor.
Option A: Proximity to trees
Option B: Solar access and
shading analysis
Option C: Local wildlife activity
Option D: Soil moisture content
VA Alternative Energy System Contracting 121-240
Save
Students also studied
Flashcard sets Study guides Practice tests
Commercial and industrial wiring ch... PJM Test Questions TFM 12 FIRE ALARM
24 terms Teacher 191 terms 91 terms
Stanely_Kimani Preview newton591 Preview quizlette53336876
Question 121: Which design Correct Answer: B - Compliance with electrical and structural
consideration ensures that a PV standards
system meets local building
codes and safety regulations? Explanation: Adhering to local codes and standards is essential
to ensure both the safety and legality of the installation.
Option A: Module aesthetics
Option B: Compliance with
electrical and structural
standards
Option C: The brand of the
panels
Option D: The system's inverter
color
Question 122: What is the Correct Answer: B - To aggregate current from multiple strings
function of a solar combiner in a for easier connection to the inverter
photovoltaic system?
Explanation: The solar combiner collects and combines current
Option A: To split the DC power from several strings, simplifying the overall wiring scheme.
into multiple circuits
Option B: To aggregate current
from multiple strings for easier
connection to the inverter
Option C: To convert AC to DC
Option D: To provide surge
protection
,Question 123: Which electrical Correct Answer: B - Current
parameter is critical when
configuring PV modules in Explanation: In parallel connections, the currents of individual
parallel? strings add together, so managing current levels is essential.
Option A: Voltage
Option B: Current
Option C: Frequency
Option D: Resistance
Question 124: What is the Correct Answer: B - It indicates the range within which actual
significance of module "power power output may vary from the rated value
tolerance" in PV systems?
Explanation: Power tolerance specifies the allowable deviation
Option A: It determines the from the nominal power rating, affecting system performance
module's physical durability predictions.
Option B: It indicates the range
within which actual power
output may vary from the rated
value
Option C: It defines the module's
color variations
Option D: It measures the
module's efficiency in low light
Question 125: Which of the Correct Answer: B - Mismatch between module outputs
following is a common cause of
energy losses in a PV system? Explanation: Mismatches between modules (due to shading or
manufacturing variances) can lead to energy losses in the
Option A: Excessive inverter system.
capacity
Option B: Mismatch between
module outputs
Option C: Uniform module
orientation
Option D: Over-cleaning of
panels
Question 126: What does "system Correct Answer: B - Maximizing energy output and economic
design optimization" aim to efficiency
achieve in a PV installation?
Explanation: Optimization involves selecting and configuring
Option A: Minimizing installation components to achieve the best balance between energy
time production, cost, and reliability.
Option B: Maximizing energy
output and economic efficiency
Option C: Standardizing panel
colors
Option D: Reducing the number
of inverters
, Question 127: Which calculation Correct Answer: B - Solar altitude angle calculation
is necessary for determining the
proper tilt angle of PV panels? Explanation: The tilt angle is derived from the solar altitude and
latitude, maximizing the panels' exposure to sunlight.
Option A: Electrical load
calculation
Option B: Solar altitude angle
calculation
Option C: Inverter capacity
calculation
Option D: Module string
configuration
Question 128: What is one of the Correct Answer: B - Accumulation of snow reducing light
challenges of installing PV absorption
systems in areas with heavy
snowfall? Explanation: Snow can cover PV panels, blocking sunlight and
thereby reducing the system's energy production.
Option A: Increased wiring
complexity
Option B: Accumulation of snow
reducing light absorption
Option C: Excessive inverter
capacity
Option D: Overheating of
modules
Question 129: Which of the Correct Answer: B - Determining the number of panels to
following best describes "string connect in series for proper voltage
sizing" in the context of PV
installations? Explanation: String sizing is the process of arranging modules in
Option A: Choosing the series to achieve a target voltage that matches system
appropriate module mounting requirements.
hardware
Option B: Determining the
number of panels to connect in
series for proper voltage
Option C: Calculating the array's
physical dimensions
Option D: Deciding the color of
the panels
Question 130: Which factor is Correct Answer: B - Solar access and shading analysis
most critical when selecting the
location for a ground mounted Explanation: The site must have unobstructed sunlight for optimal
PV array? performance, making shading analysis a critical selection factor.
Option A: Proximity to trees
Option B: Solar access and
shading analysis
Option C: Local wildlife activity
Option D: Soil moisture content
