Log in to add a comment

## Answers

please comment so that i could answer better next time

thank u

### This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.

(back ) emf = phi * Z * N / 60 * ( P / A) = k w

phi = magnetic flux through a conductor

Z = number of armature conductors (turns)

N = rotations of the motor per minute. = 60 w/(2 pi)

w = angular speed of the motor

P = number of poles

A = number of parallel paths in the armature.

= 2 for simplex wave winding of the motor/generator

= P for simplex lap-wound motor /generator

maximum voltage is given by the above equation.

If operating current I and internal resistance R or armature resistance is given, then

back emf = voltage across motor = input voltage V - I R

phi = magnetic flux through a conductor

Z = number of armature conductors (turns)

N = rotations of the motor per minute. = 60 w/(2 pi)

w = angular speed of the motor

P = number of poles

A = number of parallel paths in the armature.

= 2 for simplex wave winding of the motor/generator

= P for simplex lap-wound motor /generator

maximum voltage is given by the above equation.

If operating current I and internal resistance R or armature resistance is given, then

back emf = voltage across motor = input voltage V - I R