NETA III QUESTIONS WITH COMPLETE
SOLUTIONS 2023 VERIFIED FINAL SCRIPT
2026 FULL SOLUTIONS AND CORRECT
ANSWERS GRADED A+
⩥ Which ANSI/IEEE standard covers SF6 circuit breakers? Answer:
C37.04
⩥ You measure the winding resistance of a 12.4kV, 1000kVA, Delta-
Delta connected transformer with a 100A test set. H1-H2 measures 42.0
microhms, H2-H3 measures 41.9 microhms, and H3-H1 measures 84.0
microhms. What can you conclude from these readings? Answer: One
phase of the transformer is open.
⩥ When monitoring for entries involving a decent into atmospheres that
may be stratisfied, the envelope should be tested at a distance of
approximately _____ feet in the direction of travel and to each side.
Answer: 4
⩥ The transformer manufacturer should be consulted if winding-
resistance test values vary by more than _____ percent from factory test
values or between adjacent phases according to NETA acceptance
testing standards. Answer: 2
,⩥ A DC shunt motor should never be operated: Answer: with the field
circuit open
⩥ What is the expected torque (pound-feet) value of a 3/8" Grade 5 bolt?
Answer: 20
⩥ The generally accepted limits of deviation from the nominal 60Hz
utility power frequency is: Answer: .50Hz
⩥ Power Factor testing is least effective on which of the following?
Answer: MV Cable
⩥ Which of the following insulating liquid tests is optional when
maintenance testing a 13.2kV-4.16kV 1500kVA transformer with
silicone fluid per NETA standards? Answer: ASTM D1298
⩥ Panelboards equipped with snap switches of rating 30 amps or less
shall be provided with over-current protection of not more than _____ .
Answer: 200 amps
⩥ Underground service conductors between the terminals of service
equipment and service lateral or underground service conductors are
termed as _____ . Answer: Service Entrance Conductors
,⩥ What is a dual element fuse used for? Answer: Operate with a
temporary overload
⩥ The full-load current for a single-phase alternating current 115 volt, 1
horsepower motor is which of the following: Answer: 16 A
⩥ Infrared surveys should be performed during periods of maximum
possible loading but not less than _____ % of rated load of the electrical
equipment being inspected. Answer: 40
⩥ Decreasing the opening time of the overcurrent protective device will
decrease Arc-Flash hazards. Answer: true
⩥ In a wye connected system, without neutral grounding, zero sequence
currents are: Answer: zero
⩥ When evaluating insulation test results on a medium-voltage, air-
magnetic circuit breaker, what quantity is evaluated? Answer: watts-loss
⩥ In accordance with NETA and IEEE standards, the correct acceptance
test voltage (dc) for 35KV rated EPR 133% insulation level cable is?
Answer: 124kV
, ⩥ Calculate the circuit time constant of an inductor having resistance
value of 100 ohms and an inductance value of 4 Henry: Answer: 0.04
sec
T=L/R
⩥ Transformer polarity: Answer: Is of concern when multiple sets of
primary and secondary windings are interconnected
⩥ Identify the least reliable power system arrangement: Answer: Radial
w/ Primary Selectivity
⩥ The hot collar bushing test should be performed using which of the
following test modes? Answer: UST
GST
GST-g
⩥ R rated fuses are used for: Answer: Protection for motors
R-rated fuses provide required short-circuit protection for medium
voltage motors, motor controllers and associated circuitry. Relays
provide both overload protection and locked rotor protection to the
motor.
⩥ Which of the following would be a factor in choosing between 100%,
133%, and 173% Medium voltage cable for a power system? Answer:
Ground Fault protection
SOLUTIONS 2023 VERIFIED FINAL SCRIPT
2026 FULL SOLUTIONS AND CORRECT
ANSWERS GRADED A+
⩥ Which ANSI/IEEE standard covers SF6 circuit breakers? Answer:
C37.04
⩥ You measure the winding resistance of a 12.4kV, 1000kVA, Delta-
Delta connected transformer with a 100A test set. H1-H2 measures 42.0
microhms, H2-H3 measures 41.9 microhms, and H3-H1 measures 84.0
microhms. What can you conclude from these readings? Answer: One
phase of the transformer is open.
⩥ When monitoring for entries involving a decent into atmospheres that
may be stratisfied, the envelope should be tested at a distance of
approximately _____ feet in the direction of travel and to each side.
Answer: 4
⩥ The transformer manufacturer should be consulted if winding-
resistance test values vary by more than _____ percent from factory test
values or between adjacent phases according to NETA acceptance
testing standards. Answer: 2
,⩥ A DC shunt motor should never be operated: Answer: with the field
circuit open
⩥ What is the expected torque (pound-feet) value of a 3/8" Grade 5 bolt?
Answer: 20
⩥ The generally accepted limits of deviation from the nominal 60Hz
utility power frequency is: Answer: .50Hz
⩥ Power Factor testing is least effective on which of the following?
Answer: MV Cable
⩥ Which of the following insulating liquid tests is optional when
maintenance testing a 13.2kV-4.16kV 1500kVA transformer with
silicone fluid per NETA standards? Answer: ASTM D1298
⩥ Panelboards equipped with snap switches of rating 30 amps or less
shall be provided with over-current protection of not more than _____ .
Answer: 200 amps
⩥ Underground service conductors between the terminals of service
equipment and service lateral or underground service conductors are
termed as _____ . Answer: Service Entrance Conductors
,⩥ What is a dual element fuse used for? Answer: Operate with a
temporary overload
⩥ The full-load current for a single-phase alternating current 115 volt, 1
horsepower motor is which of the following: Answer: 16 A
⩥ Infrared surveys should be performed during periods of maximum
possible loading but not less than _____ % of rated load of the electrical
equipment being inspected. Answer: 40
⩥ Decreasing the opening time of the overcurrent protective device will
decrease Arc-Flash hazards. Answer: true
⩥ In a wye connected system, without neutral grounding, zero sequence
currents are: Answer: zero
⩥ When evaluating insulation test results on a medium-voltage, air-
magnetic circuit breaker, what quantity is evaluated? Answer: watts-loss
⩥ In accordance with NETA and IEEE standards, the correct acceptance
test voltage (dc) for 35KV rated EPR 133% insulation level cable is?
Answer: 124kV
, ⩥ Calculate the circuit time constant of an inductor having resistance
value of 100 ohms and an inductance value of 4 Henry: Answer: 0.04
sec
T=L/R
⩥ Transformer polarity: Answer: Is of concern when multiple sets of
primary and secondary windings are interconnected
⩥ Identify the least reliable power system arrangement: Answer: Radial
w/ Primary Selectivity
⩥ The hot collar bushing test should be performed using which of the
following test modes? Answer: UST
GST
GST-g
⩥ R rated fuses are used for: Answer: Protection for motors
R-rated fuses provide required short-circuit protection for medium
voltage motors, motor controllers and associated circuitry. Relays
provide both overload protection and locked rotor protection to the
motor.
⩥ Which of the following would be a factor in choosing between 100%,
133%, and 173% Medium voltage cable for a power system? Answer:
Ground Fault protection
