Coil Span of DC Motor Calculator

✖Number of Commutator Segments is the count of cylindrical assembly of insulated segments that are mounted on the shaft of the machine.ⓘ Number of Commutator Segments [n_c]			+10% -10%
✖Number of Poles refers to the total count of poles in an electrical machine for the flux generation.ⓘ Number of Poles [P]			+10% -10%

✖Coil Span Factor is defined as the peripheral distance between two sides of a coil, measured in terms of the number of armature slots between them. lt is also known as coil pitch.ⓘ Coil Span of DC Motor [K_c]

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Coil Span of DC Motor Solution

STEP 0: Pre-Calculation Summary

Formula Used

Coil Span Factor = Number of Commutator Segments/Number of Poles
K_c = n_c/P
This formula uses 3 Variables

Variables Used

Coil Span Factor - Coil Span Factor is defined as the peripheral distance between two sides of a coil, measured in terms of the number of armature slots between them. lt is also known as coil pitch.
Number of Commutator Segments - Number of Commutator Segments is the count of cylindrical assembly of insulated segments that are mounted on the shaft of the machine.
Number of Poles - Number of Poles refers to the total count of poles in an electrical machine for the flux generation.

STEP 1: Convert Input(s) to Base Unit

Number of Commutator Segments: 72 --> No Conversion Required
Number of Poles: 9 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

K_c = n_c/P --> 72/9

Evaluating ... ...

K_c = 8

STEP 3: Convert Result to Output's Unit

8 --> No Conversion Required

FINAL ANSWER

8 <-- Coil Span Factor

(Calculation completed in 00.004 seconds)

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Created by Prahalad Singh

Jaipur Engineering College and Research Centre (JECRC), Jaipur

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Vishwakarma Government Engineering College (VGEC), Ahmedabad

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< DC Machine Characterstics Calculators

Design Constant of DC Machine

LaTeX Go Machine Constant = (Number of Conductors*Number of Poles)/(2*pi*Number of Parallel Paths)

Angular Speed of DC Machine using Kf

LaTeX Go Angular Speed = Armature Voltage/(Machine Constant*Magnetic Flux*Armature Current)

Front Pitch for DC Machine

LaTeX Go Front Pitch = ((2*Number of Slots)/Number of Poles)-1

Back Pitch for DC Machine

LaTeX Go Back Pitch = ((2*Number of Slots)/Number of Poles)+1

Coil Span of DC Motor Formula

LaTeX Go

Coil Span Factor = Number of Commutator Segments/Number of Poles
K_c = n_c/P

What is the main difference between the field current and armature current?

Field Current - Current flows in Field Winding or stationary winding of Motor or generator is called field current. Armature Current - Current Flows in Armature Winding or rotating Winding of Motor or generator is called Armature Current.

How to Calculate Coil Span of DC Motor?

Coil Span of DC Motor calculator uses Coil Span Factor = Number of Commutator Segments/Number of Poles to calculate the Coil Span Factor, The Coil Span of DC Motor formula is defined as the ratio between number of segments and the number of poles. It is denoted as Y_c. Coil Span Factor is denoted by K_c symbol.

How to calculate Coil Span of DC Motor using this online calculator? To use this online calculator for Coil Span of DC Motor, enter Number of Commutator Segments (n_c) & Number of Poles (P) and hit the calculate button. Here is how the Coil Span of DC Motor calculation can be explained with given input values -> 8 = 72/9.

FAQ

What is Coil Span of DC Motor?

The Coil Span of DC Motor formula is defined as the ratio between number of segments and the number of poles. It is denoted as Y_c and is represented as K_c = n_c/P or Coil Span Factor = Number of Commutator Segments/Number of Poles. Number of Commutator Segments is the count of cylindrical assembly of insulated segments that are mounted on the shaft of the machine & Number of Poles refers to the total count of poles in an electrical machine for the flux generation.

How to calculate Coil Span of DC Motor?

The Coil Span of DC Motor formula is defined as the ratio between number of segments and the number of poles. It is denoted as Y_c is calculated using Coil Span Factor = Number of Commutator Segments/Number of Poles. To calculate Coil Span of DC Motor, you need Number of Commutator Segments (n_c) & Number of Poles (P). With our tool, you need to enter the respective value for Number of Commutator Segments & Number of Poles and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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