In Part XVIII of the Constitution, from Articles 352 to 360, the Emergency provisions are there.
Such provisions help and enable the Central government to meet any abnormal situation effectively.
The reason behind the incorporation of these provisions in the Constitution is to safeguard the sovereignty, unity, integrity, security of the country, the democratic political system, and the Constitution.
The Central government becomes all-powerful and the states go into the total control of the Centre and it converts the federal structure into a unitary one without a formal amendment of the Constitution, during an Emergency.
A unique feature of the Indian Constitution is the kind of transformation of the political system from federal during normal times to unitary during Emergency.
The feature of suspension of Fundamental Rights during Emergency. is taken from Weimar Constitution of Germany