NEIEP 400 Final Exam Review Questions With Answers Latest Updated 2024/2025

NEIEP 400 Final Exam Review Questions With Answers Latest Updated 2024/2025. A machine that converts mechanical energy into electrical energy - answers>Generator 4. What is the purpose of interpoles in a motor? - answers>Helps prevent neutral planes from shifting 5. In the basic loop circuit generator armature supplies DC power to what DC elevator hoist motor component? - answers>Motor Armature 6. If you have leakage resistance to ground, what will you use to test? - answers>Megger 7. What kind of device would you use to measure current without disconnecting wiring? - answers>Clamp on ammeter 8. What is the synchronous speed of 3 phase, 60 Hz, 6 pole motor? - answers>1200 RPM 9. Before attempting to measure resistance in an unknown resistor in a circuit, what must be done? - answers>Isolate from one side 10. What is the method used to resolve residual magnetism to an exitor? - answers>Flashing the field 11. What is the inherent current limiter present for a rotating motor armature called? - answers>CEMF 12. In order to protect internal circuits, how is the 10 amp input jack on a digital multimeter usually protected? - answers>Fused 13. What is the field protective relay in series with? - answers>Motor shunt field 14. What material is used as insulation between the commutator and the armature shaft? - answers>Mica NEIEP 400 Final Exam Review Questions and Answers (100% Verified) Latest Updated 2024/2025 Graded A+ CHARLIE WINDLER 2 15. What elements make up commutator film? - answers>Copper oxide film, graphite film, free graphite particles and waters vapor components 16. What does it mean when saturation occurs? - answers>Holds all the magnetic lines of flux it can hold 17. What kind of meter would you use to detect a ground in the armature coils? - answers>Ohmmeter 18. When should lubrication of motor bearings be done? - answers>Not running 19. What would be the result if a meter set to current and connected to a voltage source? - answers>Blow fuse 20. When commutation is good, what color is the commutator? - answers>Chocolate 21. What is a precision shunt used for measuring? - answers>Current 22. On a reversible D.C. door operator motor, what angle is the brush mounted? - answers>Radially, straight up and down 23. What is the significance of the meter specification of ohms per volt? - answers>Internal resistance at specific voltage 24. On the resistance scale of a digital meter, what does the lazy 8 symbol signify? - answers>Infinity 25. When some of the generator output is used to supply the field current how is the generator described? - answers>Self-exciting 26. When the multimeter is set to amps position the test leads are considered to be in what state? - answers>Short circuit 27. What should resistance of an armature be when measured from commutator to ground with brushes removed? - answers>High resistance 28. What method of armature winding is used for high current applications? - answers>lap winding 29. What should always be done to protect the meter from damage when measuring unknown voltage? - answers>Set to the highest range 30. To what scale should the ammeter be set in order to read a current of 2000 ma? - answers>10 amp CHARLIE WINDLER 3 31. What must be done when testing a resistance to avoid readings caused by parallel circuit paths? - answers>Remove one or two of the wire to the item being tested 32. 0.790 MΩ indicates? - answers>790 kΩ 33. AC voltage on a voltmeter is always indicated as? - answers>RMS 34. 0 on voltmeter when testing a known power source indicates? - answers>Internal fuse is blown 35. .250 MΩ indicates? - answers>250,000 MΩ 36. What should resistance of a motor or generator commutator be to ground with the brushes raised? - answers>Infinite Resistance 37. 2230Ω can also be expressed as? - answers>2.23 kΩ 38. Applied voltage on the primary leads current by? - answers>90° 39. CEMF can best be described as? - answers>Opposes applied voltage 40. Eddy currents can be described as? - answers>Circulating currents set up by magnetic induction