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NABCEP Practice Exam With Complete Solutions Latest Update
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NABCEP Practice Exam With Complete SolutionsLatest Update
If an array is south facing at equinox at noon, what must the tilt angle be in order for the
array to face directly at the sun at latitude 30? - ANSWER A. 33 degrees
B. 48 degrees
C. 18 degrees
D. 30 degrees
The temperature rating of the insulation of a conductor when designing a PV system
effects the - ANSWER A. ability of the wire to withstand fire
B. ability of the wire to withstand smoke
C. ability of the wire to carry current
D. ability of the wire to withstand physical damag
When a bypass diode kicks in from a leaf on a solar cell, which parameter would you see
reduced on a single string with string level MPPT? - ANSWER A. Current
B. Voltage
C. Ohms
D. Amp hours
Given a PV module with the following characteristics, what would be the expected
output at Standard Test Conditions if the inverter and PV were working perfectly
sending power to the grid? 20 in series 1 PV source circuit Voc = 44V Vmp = 35.2V
Power = 305W Isc = 9.27A - ANSWER A. 704V and 8.66A
B. 600V and 8A
C. 1000V and 8.2A
D. 700V and 9.27A
, Which is the best and safest method of determining current in a PV output circuit?
ANSWER Clamp on ammeter
A remote cabin uses the following loads per day, how much total energy is used per
day? 1000W toaster for 6 minutes 1.2kW hot water heating element for 3 hours per day
Three 17W LED lights for 3 hours per day iPhone 100 charger at 20W for 3 hours per day
- ANSWER 3.9 kWh
What is "blocking" used for? - ANSWER Attaching to a roof in a place where there is no
rafter
If you are going to work on the roof to fix a ground fault and the dc disconnect is on the
ground level, which of following is the best safety procedure? - ANSWER e roof
B. Removing the GFCI fuse before going on the roof
C. Leaving the disconnect in the on position
D. Lockout Tagout
Utility Interactive Systems - typical utility interactive systems in the US will EXPORT TO
THE UTILITY EXTRA POWER FOR CREDIT
Who makes requirements for electrical safety for employees? answer OSHA
A PV system that would produce 7kWac under STC conditions, which is not clipping
power is installed in a location with an average of 6PSH (peak sun hours, aka
kWh/square meter per day average) would produce how much energy in one year? -
ANSWER 15,330 kWh
When PV modules are tested by CSA to the UL 1703 standard, they are tested among
other things for - ANSWER Fire safety
If an inverter indicates there has been a ground fault what is the first thing a O&M
technician should do? - ANSWER Open all the disconnects
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