NEIEP 400 Final 30 Updated Study Guide Questions and Answers | Focused Revision Pack | A+ Verified

NEIEP 400 Final 30 Updated Study Guide
Questions and Answers | Focused Revision
Pack | A+ Verified
• What is synchronous speed? -✓✓The rotational speed of the stators magnetic
field on an Induction motor.

• What is the purpose of interpoles? -✓✓They prevent neutral plane shift

• What shifts the neutral plane in the direction of rotation in generators? -
✓✓Armature reaction
420 pg 4

• What reduces eddy currents in the field pole pieces? -✓✓Laminations
420 pg 7

• What is saturation? -✓✓When no more magnetic lines can be produced.
415 pg 6

• What waveform does a commutator produce? -✓✓Ripple unlike slip rings
415 pg 15

• What should you do when changing meter ranges? -✓✓Disconnect meter from
circuit

• What item would reduce the risk of shock when taking voltage readings? -
✓✓Insulated hard hat

• 0.49k ohm converted -✓✓490 ohms

• How to use precision shunts? -✓✓Requires the the circuit under test is open and
the shunt inserted (in series with the load)

• What is the % of slip of a 60Hz 4 pole motor that rosters at 1745rpm? -✓✓3.05%
Sync rpm- rotor rpm x100