Consider the following statements. Which of these statements are correct ? (1) Reactance relays are preferred

Consider the following statements. Which of these statements are correct ? 

(1) Reactance relays are preferred for ground fault relaying 

(2) Impedance relays are most suitable for:protecting long transmission lines 

(3) Mho relays are best suited for long transmission line protection 

(4) Reactance relays are widely used for protection of Medium transmission lines 

(A) All of them (B) (1) and (3) (C) (2) and (4) (D) (1), (2) and (4)
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1 Answer

Answer :

Consider the following statements. Which of these statements are correct ? 

(1) Reactance relays are preferred for ground fault relaying 

(2) Impedance relays are most suitable for:protecting long transmission lines 

(3) Mho relays are best suited for long transmission line protection 

(4) Reactance relays are widely used for protection of Medium transmission lines 


(A) All of them (B) (1) and (3) (C) (2) and (4) (D) (1), (2) and (4)

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