NEIEP 400 final review exam questions
with complete solutions8
What material should be used for seating brushes? - ANSWERS-Sandpaper
Readings on the meter appear to be inaccurate, what should you do? - ANSWERS-Test meter
A machine that converts mechanical energy into electrical energy - ANSWERS-Generator
What is the purpose of interpoles in a motor? - ANSWERS-Helps prevent neutral planes from
shifting
In the basic loop circuit generator armature supplies DC power to what DC elevator hoist motor
component? - ANSWERS-Motor Armature
If you have leakage resistance to ground, what will you use to test? - ANSWERS-Megger
What kind of device would you use to measure current without disconnecting wiring? -
ANSWERS-Clamp on ammeter
What is the synchronous speed of 3 phase, 60 Hz, 6 pole motor? - ANSWERS-1200 RPM
Before attempting to measure resistance in an unknown resistor in a circuit, what must be
done? - ANSWERS-Isolate from one side
, What is the method used to resolve residual magnetism to an exitor? - ANSWERS-Flashing the
field
What is the inherent current limiter present for a rotating motor armature called? - ANSWERS-
CEMF
In order to protect internal circuits, how is the 10 amp input jack on a digital multimeter usually
protected? - ANSWERS-Fused
What is the field protective relay in series with? - ANSWERS-Motor shunt field
What material is used as insulation between the commutator and the armature shaft? -
ANSWERS-Mica
What elements make up commutator film? - ANSWERS-Copper oxide film, graphite film, free
graphite particles and waters vapor components
What does it mean when saturation occurs? - 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? - ANSWERS-
Ohmmeter
When should lubrication of motor bearings be done? - ANSWERS-Not running
What would be the result if a meter set to current and connected to a voltage source? -
ANSWERS-Blow fuse
When commutation is good, what color is the commutator? - ANSWERS-Chocolate
with complete solutions8
What material should be used for seating brushes? - ANSWERS-Sandpaper
Readings on the meter appear to be inaccurate, what should you do? - ANSWERS-Test meter
A machine that converts mechanical energy into electrical energy - ANSWERS-Generator
What is the purpose of interpoles in a motor? - ANSWERS-Helps prevent neutral planes from
shifting
In the basic loop circuit generator armature supplies DC power to what DC elevator hoist motor
component? - ANSWERS-Motor Armature
If you have leakage resistance to ground, what will you use to test? - ANSWERS-Megger
What kind of device would you use to measure current without disconnecting wiring? -
ANSWERS-Clamp on ammeter
What is the synchronous speed of 3 phase, 60 Hz, 6 pole motor? - ANSWERS-1200 RPM
Before attempting to measure resistance in an unknown resistor in a circuit, what must be
done? - ANSWERS-Isolate from one side
, What is the method used to resolve residual magnetism to an exitor? - ANSWERS-Flashing the
field
What is the inherent current limiter present for a rotating motor armature called? - ANSWERS-
CEMF
In order to protect internal circuits, how is the 10 amp input jack on a digital multimeter usually
protected? - ANSWERS-Fused
What is the field protective relay in series with? - ANSWERS-Motor shunt field
What material is used as insulation between the commutator and the armature shaft? -
ANSWERS-Mica
What elements make up commutator film? - ANSWERS-Copper oxide film, graphite film, free
graphite particles and waters vapor components
What does it mean when saturation occurs? - 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? - ANSWERS-
Ohmmeter
When should lubrication of motor bearings be done? - ANSWERS-Not running
What would be the result if a meter set to current and connected to a voltage source? -
ANSWERS-Blow fuse
When commutation is good, what color is the commutator? - ANSWERS-Chocolate
