NEIEP 400 FINAL REVIEW EXAM
QUESTIONS AND ANSWERS. VERIFIED
2026.
What material should be used for seating brushes? - ANS Sandpaper
Readings on the meter appear to be inaccurate, what should you do? - ANS Test meter
A machine that converts mechanical energy into electrical energy - ANS Generator
What is the purpose of interpoles in a motor? - ANS Helps prevent neutral planes from
shifting
In the basic loop circuit generator armature supplies DC power to what DC elevator hoist motor
component? - ANS Motor Armature
If you have leakage resistance to ground, what will you use to test? - ANS Megger
What kind of device would you use to measure current without disconnecting wiring? -
ANS Clamp on ammeter
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
1
, What is the synchronous speed of 3 phase, 60 Hz, 6 pole motor? - ANS 1200 RPM
Before attempting to measure resistance in an unknown resistor in a circuit, what must be
done? - ANS Isolate from one side
What is the method used to resolve residual magnetism to an exitor? - ANS Flashing the field
What is the inherent current limiter present for a rotating motor armature called? -
ANS CEMF
In order to protect internal circuits, how is the 10 amp input jack on a digital multimeter usually
protected? - ANS Fused
What is the field protective relay in series with? - ANS Motor shunt field
What material is used as insulation between the commutator and the armature shaft? -
ANS Mica
What elements make up commutator film? - ANS Copper oxide film, graphite film, free
graphite particles and waters vapor components
What does it mean when saturation occurs? - ANS Holds all the magnetic lines of flux it can
hold
What kind of meter would you use to detect a ground in the armature coils? -
ANS Ohmmeter
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
2
QUESTIONS AND ANSWERS. VERIFIED
2026.
What material should be used for seating brushes? - ANS Sandpaper
Readings on the meter appear to be inaccurate, what should you do? - ANS Test meter
A machine that converts mechanical energy into electrical energy - ANS Generator
What is the purpose of interpoles in a motor? - ANS Helps prevent neutral planes from
shifting
In the basic loop circuit generator armature supplies DC power to what DC elevator hoist motor
component? - ANS Motor Armature
If you have leakage resistance to ground, what will you use to test? - ANS Megger
What kind of device would you use to measure current without disconnecting wiring? -
ANS Clamp on ammeter
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
1
, What is the synchronous speed of 3 phase, 60 Hz, 6 pole motor? - ANS 1200 RPM
Before attempting to measure resistance in an unknown resistor in a circuit, what must be
done? - ANS Isolate from one side
What is the method used to resolve residual magnetism to an exitor? - ANS Flashing the field
What is the inherent current limiter present for a rotating motor armature called? -
ANS CEMF
In order to protect internal circuits, how is the 10 amp input jack on a digital multimeter usually
protected? - ANS Fused
What is the field protective relay in series with? - ANS Motor shunt field
What material is used as insulation between the commutator and the armature shaft? -
ANS Mica
What elements make up commutator film? - ANS Copper oxide film, graphite film, free
graphite particles and waters vapor components
What does it mean when saturation occurs? - ANS Holds all the magnetic lines of flux it can
hold
What kind of meter would you use to detect a ground in the armature coils? -
ANS Ohmmeter
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
2
