A state of emergency is a situation in which the elected government is entitled to declare or form policies that are not permitted in ordinary time. As for the immediate consequences, the fundamental rights of the citizens are suspended and the government can form such policies or laws which they are not permitted to do in normal circumstances.
The state of emergency was proclaimed in India three times. The occurring of the Indo-China war saw the declaration of the first emergency in 1962; the Indo-Pakistan war saw the declaration of the second emergency in 1971; and the third and most controversial emergency was proclaimed in 1975 under the prime ministership of Indira Gandhi.
The state of emergency is a controversial matter in the Indian context, and its consequences are also complex and farfetched. But one thing that is evident is that the suspension of fundamental rights and abuse of power led to a severe democratic crisis.