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NABCEP PRACTICE EXAM QUESTIONS AND ANSWERS 100% CORRECT | NEW UPDATE 2025
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NABCEP PRACTICE EXAM QUESTIONS AND ANSWERS 100% CORRECT | NEW UPDATE 2025
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NABCEP PRACTICE EXAM QUESTIONSAND ANSWERS 100% CORRECT | NEW
UPDATE 2025
An off-grid installation has a 1HP pump that is on 10% of the time and a 20W light
that is on 100% of the time. What is the energy use per month? - ANSWER
68kWh
- ANSWER
What kind of ground faults do most inverters detect? - ANSWER DC
- ANSWER
Current carrying ability of a conductor (wire) is called... - ANSWER Ampacity
- ANSWER
According to ohms law and voltage drop, the relationship between voltage and
current is... - ANSWER Proportional
- ANSWER
An array in sacramento California in August is not producing as expected. Which of
the following is a likely problem? - ANSWER Decreased ac wire size and voltage
loss
, - ANSWER
When using a digital multimeter, what is the first thing you should do? -
ANSWER Inspect the meter
- ANSWER
Which is the worst design error? - ANSWER Different tilt angles in a PV source
circuit
- ANSWER
The low design temperature is -20 degrees celsius and the Voc temperature
correction factor for your PV is -0.34%/degrees celsius. The characteristics of your
module are Isc = 8A, Voc = 29V. How many modules can you put in the series for
an inverter that cannot go over 500V? (-20°C - 25°C = -45°C) (-45°C × -0.34%/°C =
15.3% increase Voc) (1.15 × 37Voc = 42.6V cold) (500V/42.6V= ?) - ANSWER 11
(11.7)
- ANSWER
MPPT is for... - ANSWER optimizing power from a PV array
- ANSWER
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