NEIEP 400 Final review || with Complete Solutions.

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