`quantitykind:MotorConstant`

http://qudt.org/vocab/quantitykind/MotorConstant

Turtle snippet Incoming relations

Types: qudt:QuantityKind

Predicate	Object
`rdf:type`	`qudt:QuantityKind`
`dcterms:description`	The motor constant, or motor size constant, \(K_m = \tau / \sqrt{P}\), is the torque of a motor divided by the square root of the power dissipated in its windings. It measures how effectively a motor produces torque per unit of resistive loss, independently of how the windings are wound, and is expressed in newton metres per square root watt (\(N \cdot m / \sqrt{W}\)). Because it involves the square root of a power, its dimension carries the fractional exponents \(L^{1} M^{1/2} T^{-1/2}\). The term "motor constant" is also used in the literature for two distinct quantities: the torque constant \(K_t = \tau / I\) (see quantitykind:TorqueConstant) and the back-EMF constant \(K_e = V / \omega\), both of which have the dimension of magnetic flux and are numerically equal to one another in coherent SI units.
`qudt:applicableUnit`	`unit:N-M-PER-W0dot5`
`qudt:eclassCode`	“0173-1#Z4-BAJ358#003”
`qudt:hasDimensionVector`	`qkdv:A0E0L1I0M0dot5H0T-0dot5D0`
`qudt:iec61360Code`	“0112/2///62720#UAD129”
`qudt:informativeReference`	https://cdd.iec.ch/cdd/iec62720/iec62720.nsf/ListsOfUnitsAllVersions/0112-2---62720%23UAD129
`qudt:latexDefinition`	\(K_m = \frac{\tau}{\sqrt{P}}\), where \(\tau\) is the motor torque and \(P\) is the power dissipated in the windings.
`qudt:plainTextDescription`	“Größe, die eine Eigenschaft eines Motors kennzeichnet”@de
`rdfs:comment`	“Applicable units are those of quantitykind:MotorConstant”
`rdfs:isDefinedBy`	http://qudt.org/3.5.0/vocab/quantitykind
`rdfs:label`	“Motor Constant”@en-US
`rdfs:seeAlso`	`quantitykind:TorqueConstant`

Generated 2026-07-28T13:52:55.573+00:00