NETA 3 CERTIFICATION EXAM
QUESTIONS AND VERIFIED
ANSWERS 2026
▶ A wye-delta transformer has a secondary phase voltage of 480 V. A
delta-connected resistive load has a resistance of 12 ohms in each leg.
What is the current in each load leg? Answer: 40 A
▶ During a phasing test across a generator tie breaker cell where both
sources have the same rotation, the voltage measure across any one
phase (A-bus to A-gen) increases as the phase angle: Answer: increases
between 0 and 90
▶ What dangerous energy could be released during a vacuum bottle
integrity test? Answer: x-rays
▶ There are two conductors, a red and a blue installed in metallic conduit.
You are using a megohmmeter to test for shorts. The two leads of the test
instrument should be connected Answer: one to the blue lead and one to
the red lead
▶ In a three-phase connection, the current that flows in an externally
connected voltage conductor is the _____ current. Answer: line
▶ Increasing the voltage applied to the armature of a DC motor will cause
its speed to decrease. Answer: False
▶ Class 2 rubber insulating gloves are proof tested at 20,000 VAC, what
color label would you expect to find on these gloves? Answer: yellow
▶ A DLRO includes ____ test connection terminals. Answer: 4
▶ Generally, when should circuit breaker contacts be lubricated? Answer:
Only in corrosive atmospheres
QUESTIONS AND VERIFIED
ANSWERS 2026
▶ A wye-delta transformer has a secondary phase voltage of 480 V. A
delta-connected resistive load has a resistance of 12 ohms in each leg.
What is the current in each load leg? Answer: 40 A
▶ During a phasing test across a generator tie breaker cell where both
sources have the same rotation, the voltage measure across any one
phase (A-bus to A-gen) increases as the phase angle: Answer: increases
between 0 and 90
▶ What dangerous energy could be released during a vacuum bottle
integrity test? Answer: x-rays
▶ There are two conductors, a red and a blue installed in metallic conduit.
You are using a megohmmeter to test for shorts. The two leads of the test
instrument should be connected Answer: one to the blue lead and one to
the red lead
▶ In a three-phase connection, the current that flows in an externally
connected voltage conductor is the _____ current. Answer: line
▶ Increasing the voltage applied to the armature of a DC motor will cause
its speed to decrease. Answer: False
▶ Class 2 rubber insulating gloves are proof tested at 20,000 VAC, what
color label would you expect to find on these gloves? Answer: yellow
▶ A DLRO includes ____ test connection terminals. Answer: 4
▶ Generally, when should circuit breaker contacts be lubricated? Answer:
Only in corrosive atmospheres
