MGVCL Exam Paper (30-07-2021 Shift 2)
Interposing current-transformer (CT) is used in differential protection of a transformer to

limit the main CT secondary current
match the standard ratio of CTs used on both sides of the transformer winding
minimize the effect of saturation of the main CTs
increase the sensitivity of the relay

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MGVCL Exam Paper (30-07-2021 Shift 2)
The magnitude of the generator earth-fault current is limited by

using higher rating CTs
inserting the stabilizing resistance in series with the relay
controlling field exciter
inserting suitable resistance in neutral grounding circuit

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MGVCL Exam Paper (30-07-2021 Shift 2)
Thermocouples can be connected in series/parallel to obtain greater sensitivity called as

Thermometer
None of these
Thermopile
Thermistor

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