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Motor Speed is the speed of the rotor(motor). Check FAQs
Nm=Ns(1-s)
Nm - Motor Speed?Ns - Synchronous Speed?s - Slip?

Motor Speed given Synchronous Speed Example

With values
With units
Only example

Here is how the Motor Speed given Synchronous Speed equation looks like with Values.

Here is how the Motor Speed given Synchronous Speed equation looks like with Units.

Here is how the Motor Speed given Synchronous Speed equation looks like.

12684.6Edit=15660Edit(1-0.19Edit)
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Motor Speed given Synchronous Speed Solution

Follow our step by step solution on how to calculate Motor Speed given Synchronous Speed?

FIRST Step Consider the formula
Nm=Ns(1-s)
Next Step Substitute values of Variables
Nm=15660rev/min(1-0.19)
Next Step Convert Units
Nm=1639.9114rad/s(1-0.19)
Next Step Prepare to Evaluate
Nm=1639.9114(1-0.19)
Next Step Evaluate
Nm=1328.32820572319rad/s
LAST Step Convert to Output's Unit
Nm=12684.6rev/min

Motor Speed given Synchronous Speed Formula Elements

Variables
Motor Speed
Motor Speed is the speed of the rotor(motor).
Symbol: Nm
Measurement: Angular VelocityUnit: rev/min
Note: Value can be positive or negative.
Synchronous Speed
Synchronous speed is a definite speed for an alternating-current machine that is dependent on the frequency of the supply circuit.
Symbol: Ns
Measurement: Angular VelocityUnit: rev/min
Note: Value can be positive or negative.
Slip
Slip in Induction Motor is the relative speed between the rotating magnetic flux and rotor expressed in terms of per unit synchronous speed. It is a dimensionless quantity.
Symbol: s
Measurement: NAUnit: Unitless
Note: Value can be positive or negative.

Other Formulas to find Motor Speed

​Go Motor Speed in Induction Motor
Nm=Ns(1-s)
​Go Motor Speed given Efficiency in Induction Motor
Nm=ηNs

Other formulas in Speed category

​Go Synchronous Speed given Mechanical Power
Ns=60Pm2πτg
​Go Synchronous Speed given Motor Speed
Ns=Nm1-s
​Go Linear Synchronous Speed
Vs=2wfline
​Go Synchronous Speed in Induction Motor
Ns=120fn

How to Evaluate Motor Speed given Synchronous Speed?

Motor Speed given Synchronous Speed evaluator uses Motor Speed = Synchronous Speed*(1-Slip) to evaluate the Motor Speed, Motor Speed given Synchronous Speed is the speed at which rotor rotates. With this formula we can easily find motor speed when synchronous speed of rotor is given. Motor Speed is denoted by Nm symbol.

How to evaluate Motor Speed given Synchronous Speed using this online evaluator? To use this online evaluator for Motor Speed given Synchronous Speed, enter Synchronous Speed (Ns) & Slip (s) and hit the calculate button.

FAQs on Motor Speed given Synchronous Speed

What is the formula to find Motor Speed given Synchronous Speed?
The formula of Motor Speed given Synchronous Speed is expressed as Motor Speed = Synchronous Speed*(1-Slip). Here is an example- 121129 = 1639.91136509036*(1-0.19).
How to calculate Motor Speed given Synchronous Speed?
With Synchronous Speed (Ns) & Slip (s) we can find Motor Speed given Synchronous Speed using the formula - Motor Speed = Synchronous Speed*(1-Slip).
What are the other ways to Calculate Motor Speed?
Here are the different ways to Calculate Motor Speed-
  • Motor Speed=Synchronous Speed*(1-Slip)OpenImg
  • Motor Speed=Efficiency*Synchronous SpeedOpenImg
Can the Motor Speed given Synchronous Speed be negative?
Yes, the Motor Speed given Synchronous Speed, measured in Angular Velocity can be negative.
Which unit is used to measure Motor Speed given Synchronous Speed?
Motor Speed given Synchronous Speed is usually measured using the Revolution per Minute[rev/min] for Angular Velocity. Radian per Second[rev/min], Radian per Day[rev/min], Radian per Hour[rev/min] are the few other units in which Motor Speed given Synchronous Speed can be measured.
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