Mark the correct statement:

1. The CT is used with its primary winding connected in series with the line carrying the current to be measured
2. The primary of CT consists of large number of turns
3. The PT may be considered as a series transformer with its secondary nearly under short circuit condition
4. The secondary of a C.T. has only a few turns

The current transformers (CT) is used with its primary winding connected in series with the line carrying the current to be measured.