The number of stator teeth in a variable reluctance stepper motor is 16. And, the number of rotor teeth is 8. Calculate the stepping angle of the moto

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The number of stator teeth in a variable reluctance stepper motor is 16. And, the number of rotor teeth is 8. Calculate the stepping angle of the motor
1. 90°
2. 45°
3. 135°
4. 22.5°

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Correct Answer - Option 4 : 22.5°

Concept:

Step angle of the variable reluctance stepper motor is given by

$β = {{(N_s -N_r)× 360°} \over (N_s× N_r)}$

Where Ns = Number of stator teeth

Nr = Number of rotor teeth

Calculation:

Given that, Nr = 8

N= 16

∴ The stepping angle can be calculated as

$β = {{(16 -8)× 360°} \over (16× 8)}$

β = 22.5°