Rotor Efficiency in Induction Motor Calculator

✖Motor Speed is the speed of the rotor(motor).ⓘ Motor Speed [N_m]			+10% -10%
✖Synchronous speed is a definite speed for an alternating-current machine that is dependent on the frequency of the supply circuit.ⓘ Synchronous Speed [N_s]			+10% -10%

✖The efficiency of a system in electronics and electrical engineering is defined as useful power output divided by the total electrical power consumed.ⓘ Rotor Efficiency in Induction Motor [η]

⎘ Copy

👎

Formula

✖

Rotor Efficiency in Induction Motor

Formula

η = \frac{N m}{N s}

Example

0.916347 = \frac{14350 rev/min}{15660 rev/min}

Calculator

LaTeX

Reset

👍

Download Induction Motor Formula PDF PDF Image

Rotor Efficiency in Induction Motor Solution

STEP 0: Pre-Calculation Summary

Formula Used

Efficiency = (Motor Speed)/(Synchronous Speed)
η = (N_m)/(N_s)
This formula uses 3 Variables

Variables Used

Efficiency - The efficiency of a system in electronics and electrical engineering is defined as useful power output divided by the total electrical power consumed.
Motor Speed - (Measured in Radian per Second) - Motor Speed is the speed of the rotor(motor).
Synchronous Speed - (Measured in Radian per Second) - Synchronous speed is a definite speed for an alternating-current machine that is dependent on the frequency of the supply circuit.

STEP 1: Convert Input(s) to Base Unit

Motor Speed: 14350 Revolution per Minute --> 1502.72848589059 Radian per Second (Check conversion here)
Synchronous Speed: 15660 Revolution per Minute --> 1639.91136509036 Radian per Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

η = (N_m)/(N_s) --> (1502.72848589059)/(1639.91136509036)

Evaluating ... ...

η = 0.916347381864622

STEP 3: Convert Result to Output's Unit

0.916347381864622 --> No Conversion Required

FINAL ANSWER

0.916347381864622 ≈ 0.916347 <-- Efficiency

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Electrical » Machine » AC Machines » Induction Motor » Torque and Efficiency » Rotor Efficiency in Induction Motor

Credits

Created by Team Softusvista

Softusvista Office (Pune), India

Team Softusvista has created this Calculator and 600+ more calculators!

Verified by Himanshi Sharma

Bhilai Institute of Technology (BIT), Raipur

Himanshi Sharma has verified this Calculator and 800+ more calculators!

< Torque and Efficiency Calculators

Induced Torque given Magnetic Field Density

Go Torque = (Machine Construction Constant/Magnetic Permeability)*Rotor Magnetic Flux Density*Stator Magnetic Flux Density

Maximum Running Torque

Go Running Torque = (3*EMF^2)/(4*pi*Synchronous Speed*Reactance)

Rotor Efficiency in Induction Motor

Go Efficiency = (Motor Speed)/(Synchronous Speed)

Gross Torque Developed per Phase

Go Gross Torque = Mechanical Power/Motor Speed

< Induction Motor Circuit Calculators

Rotor Current in Induction Motor

Go Rotor Current = (Slip*Induced EMF)/sqrt(Rotor Resistance per Phase^2+(Slip*Rotor Reactance per Phase)^2)

Armature Current given Power in Induction Motor

Go Armature Current = Output Power/Armature Voltage

Field Current using Load Current in Induction Motor

Go Field Current = Armature Current-Load Current

Load Current in Induction Motor

Go Load Current = Armature Current-Field Current

Rotor Efficiency in Induction Motor Formula

Efficiency = (Motor Speed)/(Synchronous Speed)
η = (N_m)/(N_s)

What is the efficiency of a machine?

The efficiency of any machine measures the degree to which friction and other factors reduce the actual work output of the machine from its theoretical maximum. A frictionless machine would have an efficiency of 100%. A machine with an efficiency of 20% has an output of only one-fifth of its theoretical output.

How to Calculate Rotor Efficiency in Induction Motor?

Rotor Efficiency in Induction Motor calculator uses Efficiency = (Motor Speed)/(Synchronous Speed) to calculate the Efficiency, Rotor efficiency in Induction Motor is defined as the ratio of the output to that of input in the rotor section of an induction motor. Efficiency is denoted by η symbol.

How to calculate Rotor Efficiency in Induction Motor using this online calculator? To use this online calculator for Rotor Efficiency in Induction Motor, enter Motor Speed (N_m) & Synchronous Speed (N_s) and hit the calculate button. Here is how the Rotor Efficiency in Induction Motor calculation can be explained with given input values -> 0.916347 = (1502.72848589059)/(1639.91136509036).

FAQ

What is Rotor Efficiency in Induction Motor?

Rotor efficiency in Induction Motor is defined as the ratio of the output to that of input in the rotor section of an induction motor and is represented as η = (N_m)/(N_s) or Efficiency = (Motor Speed)/(Synchronous Speed). Motor Speed is the speed of the rotor(motor) & Synchronous speed is a definite speed for an alternating-current machine that is dependent on the frequency of the supply circuit.

How to calculate Rotor Efficiency in Induction Motor?

Rotor efficiency in Induction Motor is defined as the ratio of the output to that of input in the rotor section of an induction motor is calculated using Efficiency = (Motor Speed)/(Synchronous Speed). To calculate Rotor Efficiency in Induction Motor, you need Motor Speed (N_m) & Synchronous Speed (N_s). With our tool, you need to enter the respective value for Motor Speed & Synchronous Speed and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

Home

FREE PDFs

🔍 Search