NEIEP 400 Final review |78| Questions with verified Answers

NEIEP 400 Final review |78| Questions with verified Answers 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 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