FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

Back EMF of DC Generator given Flux Formula

GoEMF for DC Generator for Wave Winding Formula

GoEMF for DC Generator with Lap Winding Formula

Fx Copy

LaTeX Copy

EMF is defined as the electro motive force which is needed to move the electrons within an electrical conductor to generate flow of current through the conductor. Check FAQs

E = K e \cdot ω s \cdot Φ p

E - EMF?K_e - Back EMF Constant?ω_s - Angular Speed?Φ_p - Flux per Pole?

Back EMF of DC Generator given Flux Example

With values

With units

Only example

Here is how the Back EMF of DC Generator given Flux equation looks like with Values.

Here is how the Back EMF of DC Generator given Flux equation looks like with Units.

Here is how the Back EMF of DC Generator given Flux equation looks like.

14.3184 = 0.76 \cdot 314 \cdot 0.06

14.3184V = 0.76 \cdot 314rad/s \cdot 0.06Wb

14.3184 = 0.76 \cdot 314 \cdot 0.06

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Engineering » Category

Electrical » Category

Machine » fx Back EMF of DC Generator given Flux

Back EMF of DC Generator given Flux Solution

Follow our step by step solution on how to calculate Back EMF of DC Generator given Flux?

FIRST Step Consider the formula

E = K e \cdot ω s \cdot Φ p

Next Step Substitute values of Variables

∴

E = 0.76 \cdot 314rad/s \cdot 0.06Wb

Next Step Prepare to Evaluate

∴

E = 0.76 \cdot 314 \cdot 0.06

LAST Step Evaluate

∴

E = 14.3184V

Back EMF of DC Generator given Flux Formula Elements

Variables

EMF

EMF is defined as the electro motive force which is needed to move the electrons within an electrical conductor to generate flow of current through the conductor.

Symbol: E

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find EMF

Back EMF Constant

Back EMF constant is ratio of back EMF to the motor speed, and is a useful parameter for designing and analyzing motor control systems.

Symbol: K_e

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Back EMF Constant

Angular Speed

Angular speed is the rate of rotation about an axis, measuring how the angle changes with time. It is measured in radian/sec.

Symbol: ω_s

Measurement: Angular VelocityUnit: rad/s

Note: Value should be greater than 0.

Formulas to find Angular Speed

Flux per Pole

Flux per Pole refers to the amount of magnetic flux produced by each individual pole of the generator field winding. It is an important parameter and affects the output voltage.

Symbol: Φ_p

Measurement: Magnetic FluxUnit: Wb

Note: Value should be greater than 0.

Formulas to find Flux per Pole

Other Formulas to find EMF

Go EMF for DC Generator for Wave Winding

E = \frac{P \cdot N r \cdot Φ p \cdot Z}{120}

Go EMF for DC Generator with Lap Winding

E = \frac{N r \cdot Φ p \cdot Z}{60}

Other formulas in DC Generator Characteristics category

Go Converted Power in DC Generator

P conv = V o \cdot I L

Go Field Copper Loss in DC Generator

P cu = {I f}^{2} \cdot R f

Go Output Voltage in DC Generator using Converted Power

V o = \frac{P conv}{I L}

Go Armature Resistance of DC Generator using Output Voltage

R a = \frac{V a - V o}{I a}

How to Evaluate Back EMF of DC Generator given Flux?

Back EMF of DC Generator given Flux evaluator uses EMF = Back EMF Constant*Angular Speed*Flux per Pole to evaluate the EMF, Back EMF of DC Generator given Flux refers to the phenomenon armature rotates in a magnetic field created by the field winding, and the relative motion between the field and the armature conductors induces a back EMF in the armature. EMF is denoted by E symbol.

How to evaluate Back EMF of DC Generator given Flux using this online evaluator? To use this online evaluator for Back EMF of DC Generator given Flux, enter Back EMF Constant (K_e), Angular Speed (ω_s) & Flux per Pole (Φ_p) and hit the calculate button.

FAQs on Back EMF of DC Generator given Flux

What is the formula to find Back EMF of DC Generator given Flux?

The formula of Back EMF of DC Generator given Flux is expressed as EMF = Back EMF Constant*Angular Speed*Flux per Pole. Here is an example- 14.3184 = 0.76*314*0.06.

How to calculate Back EMF of DC Generator given Flux?

With Back EMF Constant (K_e), Angular Speed (ω_s) & Flux per Pole (Φ_p) we can find Back EMF of DC Generator given Flux using the formula - EMF = Back EMF Constant*Angular Speed*Flux per Pole.

What are the other ways to Calculate EMF?

Here are the different ways to Calculate EMF-

EMF=(Number of Poles*Rotor Speed*Flux per Pole*Number of Conductor)/120
EMF=(Rotor Speed*Flux per Pole*Number of Conductor)/60

Can the Back EMF of DC Generator given Flux be negative?

Yes, the Back EMF of DC Generator given Flux, measured in Electric Potential can be negative.

Which unit is used to measure Back EMF of DC Generator given Flux?

Back EMF of DC Generator given Flux is usually measured using the Volt[V] for Electric Potential. Millivolt[V], Microvolt[V], Nanovolt[V] are the few other units in which Back EMF of DC Generator given Flux can be measured.

Let Others Know

✖

Facebook

Twitter

Copied!

: Value
: Unit