\documentclass{cut-thesis}
% Additional Packages
% Additional commands
\begin{document}
\frontmatter
\input{frontmatter/titlepage}
\input{frontmatter/Acknowledgements}
\input{frontmatter/Abstract}
\input{frontmatter/tocs}
\mainmatter
\input{mainmatter/Chapter-1}
\input{mainmatter/Chapter-2}
\input{mainmatter/Chapter-3}
\input{mainmatter/Chapter-4}
\input{mainmatter/Chapter-5}
\Urlmuskip=0mu plus 1mu\relax\sloppy
\bibliographystyle{IEEEtran}
\bibliography{references}
\begin{appendices}
\renewcommand{\thechapter}{\Roman{chapter}}
\titleformat{\chapter}[display] {\normalfont\huge\bfseries}{APPENDIX~\thechapter}{0pt}{\huge}
\input{mainmatter/Appendix-1}
\end{appendices}
\printindex
\end{document}
\end{document}