NEIEP 400 LATEST 2026 TEST PAPER QUESTIONS AND
SOLUTIONS GRADED A+
✔✔What item would reduce the risk of shock when taking voltage readings? -
✔✔Insulated hard hat
✔✔0.49k ohm converted - ✔✔490 ohms
✔✔How to use precision shunts? - ✔✔Requires the the circuit under test is open and
the shunt inserted (in series with the load)
✔✔What is the % of slip of a 60Hz 4 pole motor that rosters at 1745rpm? - ✔✔3.05%
Sync rpm- rotor rpm x100
Divided by sync rpm
✔✔Before using a megger, what must be done? - ✔✔Isolate
✔✔What kind of windings is used for high current and what kind for high voltage? -
✔✔High current- loop winding
High voltage- wave windings
✔✔Calculating transformer efficiency % - ✔✔EP x IP= A ES x IS= B
Divide A and B
✔✔Primary has 600 turns & 200 on the 2nd, with 120v on the primary. What is the
secondary voltage? - ✔✔NP over NS. VP over VS
600 over 200. 120v over ?
120x200= 24,000
24,000 divided by 600=40vs
✔✔Where do you find the max armature voltage? - ✔✔Data tag/ name plate
✔✔What must be done to measure resistance in a circuit? - ✔✔Power and disconnect
one end of the circuit
✔✔What is the symbol for Dc current - ✔✔You all should know this
✔✔What type of generator uses a series and a shunt field on a common pole pieces? -
✔✔Compound
✔✔What material is used to insulate the commutator from the armature shaft? -
✔✔Mica
SOLUTIONS GRADED A+
✔✔What item would reduce the risk of shock when taking voltage readings? -
✔✔Insulated hard hat
✔✔0.49k ohm converted - ✔✔490 ohms
✔✔How to use precision shunts? - ✔✔Requires the the circuit under test is open and
the shunt inserted (in series with the load)
✔✔What is the % of slip of a 60Hz 4 pole motor that rosters at 1745rpm? - ✔✔3.05%
Sync rpm- rotor rpm x100
Divided by sync rpm
✔✔Before using a megger, what must be done? - ✔✔Isolate
✔✔What kind of windings is used for high current and what kind for high voltage? -
✔✔High current- loop winding
High voltage- wave windings
✔✔Calculating transformer efficiency % - ✔✔EP x IP= A ES x IS= B
Divide A and B
✔✔Primary has 600 turns & 200 on the 2nd, with 120v on the primary. What is the
secondary voltage? - ✔✔NP over NS. VP over VS
600 over 200. 120v over ?
120x200= 24,000
24,000 divided by 600=40vs
✔✔Where do you find the max armature voltage? - ✔✔Data tag/ name plate
✔✔What must be done to measure resistance in a circuit? - ✔✔Power and disconnect
one end of the circuit
✔✔What is the symbol for Dc current - ✔✔You all should know this
✔✔What type of generator uses a series and a shunt field on a common pole pieces? -
✔✔Compound
✔✔What material is used to insulate the commutator from the armature shaft? -
✔✔Mica
