SUBSTATION AND EQUIPMENT - Practice Mode

1) Which type of transformer, the current transformer comes under?

Idel transformer Step down transformer Step up transformer Instrument transformer

Correct Answer: Instrument transformer

2) What is the secondary voltage of PT?

440 V 11000 V 660 V 110 V

Correct Answer: 110 V

3) What current the secondary of a CT is designed?

2 Amp 3 Amp 4 Amp 5 Amp

Correct Answer: 5 Amp

4) What action is required before disconnecting the ammeter connected with CT?

Remove the earth of CT short the secondary of CT Opened the secondary side of CT Switch OFF total supply

Correct Answer: short the secondary of CT

5) Which is the use of lighting arrester in HT line?

Protect the transformers from surge For short circuit protection For open circuit protection For leakage protection

Correct Answer: Protect the transformers from surge

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