1. What is Back Pitch?

Back Pitch refers to the distance between two consecutive sides of a coil measured along the surface of the armature. It is an important parameter in DC machine design and operation.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Yb \) — Back Pitch (units)
• \( U \) — Coil Span (units)
• \( Kc \) — Coil Span Factor (units)

Explanation: The formula calculates the back pitch by multiplying the coil span with the coil span factor.

3. Importance of Back Pitch Calculation

Details: Accurate back pitch calculation is crucial for proper DC machine design, winding arrangement, and optimal performance of electrical machines.

4. Using the Calculator

Tips: Enter coil span and coil span factor values. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is the relationship between back pitch and coil span?
A: Back pitch is directly proportional to coil span and coil span factor, as shown in the formula Yb = U × Kc.

Q2: Why is back pitch important in DC machines?
A: Back pitch affects the winding configuration, electromagnetic performance, and overall efficiency of DC machines.

Q3: How is coil span factor determined?
A: Coil span factor is typically defined as the peripheral distance between two sides of a coil, measured in terms of the number of armature slots between them.

Q4: Can this calculator be used for AC machines?
A: This specific formula is designed for DC machines. AC machines may have different winding configurations and calculations.

Q5: What units should be used for input values?
A: Consistent units should be used for both coil span and coil span factor to get correct back pitch results.