Current transformer uses:

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ALP CBT 2 Electrician Previous Paper: Held on 22 Jan 2019 Shift 3

Answer 1

The current transformer uses step-up transformer.
The current transformer ( C.T. ), is a type of instrument transformer that is designed to produce an alternating current in its secondary winding which is proportional to the current being measured in its primary.
Current transformers reduce high voltage currents to a much lower value and provide a convenient way of safely monitoring the actual electrical current flowing in an AC transmission line using a standard ammeter.
By reducing current in the secondary side, C.T. also steps up the voltage on the secondary side.