\subsubsection{Types of AC Machines}
\end{document}
\section{Electrical Machines}
Here is a sample .pdf file using LaTeX
DC machines are widely used in applications requiring a constant speed or precise control of speed. electrical machines ashfaq hussain pdf full
\subsection{Power Generation}
\subsection{DC Machines}
The main components of a DC machine are: \begin{itemize} \item Armature \item Field Windings \item Commutator \end{itemize}