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NETA Level 2 Certified Assistant Electrical Testing Specialist Sample Questions:

1. For photovoltaic (PV) systems, which device converts direct-current (DC) input into alternating-current (AC) output?

A) Transformer
B) Converter
C) Inverter
D) Rectifier

2. In which three-phase configuration areline current and phase current equal?

A) Delta
B) Open-delta
C) Corner-grounded delta
D) Wye

3. Electrical equipment working space must have at least two entrances of sufficient area to permit access.

A) True
B) False
C) True only above 600 V
D) False unless the room is classified as a confined space

4. A ground conductor is routed through azero-sequence current transformer (CT)together with the phase conductors feeding the load. What is the most likely result?

A) Overcurrent protection will nuisance trip due to CT saturation
B) Ground-fault protection will not function correctly because the residual current sums to zero
C) Ground-fault protection becomes more sensitive and trips faster
D) The CT secondary will produce a higher than normal burden voltage

5. An analog ammeter has an accuracy of ±1% of full scale. If a reading is taken at25% of full scale, what is the accuracy of that measurement?

A) ±1%
B) ±4%
C) ±2.5%
D) ±0.25%

Solutions: