Pre-NABCEP Exam Questions with Correct Answers
Which sensor would be used to measure irradiance during
troubleshooting of a PV system? Correct Answer-Pyranometer sensor
Which of the following is the most likely result of short-circuiting a PV
module? Correct Answer-The voltage is zero, and the current is limited.
Which of the following is a primary reason for following manufacturer
installation instructions when mounting a combiner box? Correct
Answer-The combiner is listed for use according to the installation
instructions.
Which of the following is the primary advantage of a ground-mounted
array over an array mounted parallel to a roof surface? Correct Answer-
Lower operating temperature.
How should the pyranometer be positioned to produce an accurate
measurement of the solar irradiance incident on a PV array? Correct
Answer-In the plane of the array
Which of the following PV design considerations are dead loads on a
building structure? Correct Answer-PV modules and racking loads
A dc disconnect containing the PV output circuit has the door open.
Which condition MUST be assumed? Correct Answer-All terminals may
be energized.
, If a system has a low current output, how can the circuit be amplified so
that a clamp meter can be used for testing purposes? Correct Answer-
Loop the wire around the jaw and divide by the number of loops.
Which term is used for combining the output of a grid-tied inverter with
a battery-based inverter? Correct Answer-Ac-coupled
Which organization certifies parts and materials for intended use to
ensure safety compliance? Correct Answer-UL
Which term is defined as the repeated measurement and reporting of
electrical or environmental parameters of a system at regular intervals?
Correct Answer-Monitoring
An owner of a grid-tied system would like to have a battery backup
added. What is the MOST efficient way to achieve this? Correct
Answer-Installing an ac-coupled battery-backup inverter.
Which of the following may be offered as part of a service contract to
verify proper system performance? Correct Answer-Remote monitoring
Which of the following is considered to be part of a PV system's balance
of system (BOS) components? Correct Answer-Dc disconnect
Which sensor would be used to measure irradiance during
troubleshooting of a PV system? Correct Answer-Pyranometer sensor
Which of the following is the most likely result of short-circuiting a PV
module? Correct Answer-The voltage is zero, and the current is limited.
Which of the following is a primary reason for following manufacturer
installation instructions when mounting a combiner box? Correct
Answer-The combiner is listed for use according to the installation
instructions.
Which of the following is the primary advantage of a ground-mounted
array over an array mounted parallel to a roof surface? Correct Answer-
Lower operating temperature.
How should the pyranometer be positioned to produce an accurate
measurement of the solar irradiance incident on a PV array? Correct
Answer-In the plane of the array
Which of the following PV design considerations are dead loads on a
building structure? Correct Answer-PV modules and racking loads
A dc disconnect containing the PV output circuit has the door open.
Which condition MUST be assumed? Correct Answer-All terminals may
be energized.
, If a system has a low current output, how can the circuit be amplified so
that a clamp meter can be used for testing purposes? Correct Answer-
Loop the wire around the jaw and divide by the number of loops.
Which term is used for combining the output of a grid-tied inverter with
a battery-based inverter? Correct Answer-Ac-coupled
Which organization certifies parts and materials for intended use to
ensure safety compliance? Correct Answer-UL
Which term is defined as the repeated measurement and reporting of
electrical or environmental parameters of a system at regular intervals?
Correct Answer-Monitoring
An owner of a grid-tied system would like to have a battery backup
added. What is the MOST efficient way to achieve this? Correct
Answer-Installing an ac-coupled battery-backup inverter.
Which of the following may be offered as part of a service contract to
verify proper system performance? Correct Answer-Remote monitoring
Which of the following is considered to be part of a PV system's balance
of system (BOS) components? Correct Answer-Dc disconnect
