Fix: Question and Calculation format (#12)

* Fix typo in DC generator question heading

* Fix: Improve formatting of  calculation details

Formatted the DC generator calculations for better readability.

Author: ohmlaws

_posts/theory/2025-05-15-dc-generator.md

@@ -327,7 +327,7 @@ image:
 <li onclick="checkAnswer(this, true)" data-correct="true">Smooth reversal of current direction</li>
 </ul>
 <hr>
-<h3 id="q39">Q39: Why solid pole shoes are used in D.C generator?</h3>
+<h3 id="q39">Q39: Why solid pole core are used in D.C generator?</h3>
 <ul>
 <li onclick="checkAnswer(this, false)" data-correct="false">To reduce the copper loss</li>
 <li onclick="checkAnswer(this, false)" data-correct="false">To increase the residual magnetism</li>
@@ -433,15 +433,20 @@ image:
 </ul>
 <details>
   <summary>Show Calculation</summary>
-* Number of poles ($P$) = $4$
-* Number of conductors ($Z$) = $1020$
-* Speed ($N$) = $1500 \text{ rpm}$
-* Flux per pole ($\phi$) = $0.007 \text{ Wb}$
-* Winding type = Simplex Wave Wound
+Number of poles ($P$) = $4$
+  
+Number of conductors ($Z$) = $1020$
+
+Speed ($N$) = $1500 \text{ rpm}$
+
+Flux per pole ($\phi$) = $0.007 \text{ Wb}$
+
+Winding type = Simplex Wave Wound
+
 The generated EMF ($E_g$) in a DC generator is calculated using the formula:
 $$E_g = \frac{\phi Z N P}{60 A}$$
 
-For a **Wave Wound** armature, the number of parallel paths ($A$) is always equal to 2, regardless of the number of poles.
+For a Wave Wound armature, the number of parallel paths ($A$) is always equal to 2, regardless of the number of poles.
 
 $$E_g = \frac{0.007 \times 1020 \times 1500 \times 4}{60 \times 2}$$
 
@@ -473,14 +478,18 @@ $$E_g = 357 \text{ Volts}$$
 </ul>
 <details>
   <summary>Show Calculation</summary>
-**Formula:**
+Formula:
 $$E_g = \frac{\phi Z N P}{60 A}$$
 
-* $\phi = 0.064 \text{ Wb}$
-* $Z = 600$
-* $N = 1000 \text{ rpm}$
-* $P = 4$
-* $A = 4$ (For Lap winding, $A = P$)
+$\phi = 0.064 \text{ Wb}$
+
+$Z = 600$
+
+$N = 1000 \text{ rpm}$
+
+$P = 4$
+
+$A = 4$ (For Lap winding, $A = P$)
 
 $$E_g = \frac{0.064 \times 600 \times 1000 \times 4}{60 \times 4}$$