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- Goodness_factor abstract "Goodness factor is a metric developed by Eric Laithwaite to determine the 'goodness' of an electric motor. Using it he was able to develop efficient magnetic levitation induction motors.whereG is the goodness factor (factors above 1 are likely to be efficient)Am, Ae are the cross sections of the magnetic and electric circuitlm, le are the lengths of the magnetic and electric circuitsμ is the permeability of the coreω is the angular frequency the motor is driven atσ is the conductivity of the conductorFrom this he showed that the most efficient motors are likely to be relatively large. However, the equation only directly relates to non-permanent magnet motors.Laithwaite showed that for a simple induction motor this gave:where p is the pole pitch arc length, ρr is the surface resistivity of the rotor and g is the air gap.".
- Goodness_factor wikiPageID "30109224".
- Goodness_factor wikiPageRevisionID "546061015".
- Goodness_factor hasPhotoCollection Goodness_factor.
- Goodness_factor subject Category:Dimensionless_numbers.
- Goodness_factor subject Category:Electric_motors.
- Goodness_factor subject Category:Magnetism.
- Goodness_factor type Artifact100021939.
- Goodness_factor type Device103183080.
- Goodness_factor type ElectricMotor103273061.
- Goodness_factor type ElectricMotors.
- Goodness_factor type Instrumentality103575240.
- Goodness_factor type Machine103699975.
- Goodness_factor type Motor103789946.
- Goodness_factor type Object100002684.
- Goodness_factor type PhysicalEntity100001930.
- Goodness_factor type Whole100003553.
- Goodness_factor comment "Goodness factor is a metric developed by Eric Laithwaite to determine the 'goodness' of an electric motor.".
- Goodness_factor label "Goodness factor".
- Goodness_factor label "Goodness係數".
- Goodness_factor sameAs m.0g576t9.
- Goodness_factor sameAs Q5583492.
- Goodness_factor sameAs Q5583492.
- Goodness_factor sameAs Goodness_factor.
- Goodness_factor wasDerivedFrom Goodness_factor?oldid=546061015.
- Goodness_factor isPrimaryTopicOf Goodness_factor.