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Pole Arc Formula

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Pole Arc is the distance measured on the circumference of the armature from the center of one pole to the center of the next pole. Check FAQs

θ = n d \cdot 0.8 \cdot Y s

θ - Pole Arc?n_d - Number of Damper Bar?Y_s - Slot Pitch?

Pole Arc Example

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With units

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Here is how the Pole Arc equation looks like with Values.

Here is how the Pole Arc equation looks like with Units.

Here is how the Pole Arc equation looks like.

257.6 = 10 \cdot 0.8 \cdot 32.2

257.6m = 10 \cdot 0.8 \cdot 32.2m

257.6 = 10 \cdot 0.8 \cdot 32.2

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Pole Arc Solution

Follow our step by step solution on how to calculate Pole Arc?

FIRST Step Consider the formula

θ = n d \cdot 0.8 \cdot Y s

Next Step Substitute values of Variables

∴

θ = 10 \cdot 0.8 \cdot 32.2m

Next Step Prepare to Evaluate

∴

θ = 10 \cdot 0.8 \cdot 32.2

LAST Step Evaluate

∴

θ = 257.6m

Pole Arc Formula Elements

Variables

Pole Arc

Pole Arc is the distance measured on the circumference of the armature from the center of one pole to the center of the next pole.

Symbol: θ

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Pole Arc

Number of Damper Bar

Number of Damper Bar provides starting torque necessary for starting the synchronous motor. It also prevents hunting of synchronous motor.

Symbol: n_d

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Number of Damper Bar

Slot Pitch

Slot pitch is the distance between two adjacent slots. In dc machines, the slot pitch usually lies between 25 to 35 mm.

Symbol: Y_s

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Slot Pitch

Other formulas in Magnetic Parameters category

Go Magnetic Loading

B = n \cdot Φ

Go Specific Magnetic Loading

B av = \frac{n \cdot Φ}{π \cdot D a \cdot L a}

Go Specific Magnetic Loading using Output Coefficient AC

B av = \frac{C o(ac) \cdot 1000}{11 \cdot q av \cdot K w}

Go MMF of Damper Winding

MMF d = 0.143 \cdot q av \cdot Y p

How to Evaluate Pole Arc?

Pole Arc evaluator uses Pole Arc = Number of Damper Bar*0.8*Slot Pitch to evaluate the Pole Arc, Pole Arc is the distance measured on the circumference of the armature from the center of one pole to the center of the next pole. The pole arc refers to the angular span or extent of a magnetic pole in an electrical machine. It represents the angle covered by the magnetic field produced by a single pole in the machine. Pole Arc is denoted by θ symbol.

How to evaluate Pole Arc using this online evaluator? To use this online evaluator for Pole Arc, enter Number of Damper Bar (n_d) & Slot Pitch (Y_s) and hit the calculate button.

FAQs on Pole Arc

What is the formula to find Pole Arc?

The formula of Pole Arc is expressed as Pole Arc = Number of Damper Bar*0.8*Slot Pitch. Here is an example- 257.6 = 10*0.8*32.2.

How to calculate Pole Arc?

With Number of Damper Bar (n_d) & Slot Pitch (Y_s) we can find Pole Arc using the formula - Pole Arc = Number of Damper Bar*0.8*Slot Pitch.

Can the Pole Arc be negative?

No, the Pole Arc, measured in Length cannot be negative.

Which unit is used to measure Pole Arc?

Pole Arc is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Pole Arc can be measured.

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Pole Arc Formula

Pole Arc Example

Pole Arc Solution

Pole Arc Formula Elements

Other formulas in Magnetic Parameters category

How to Evaluate Pole Arc?

FAQs on Pole Arc

Variable Name