Range of surge impedance for an underground cables is _____________

1.	Range of surge impedance for an underground cables is _____________
A.	12 ‚âà√≠¬¨¬© ‚Äö√Ñ√∂‚àö√ë‚àö¬® 144 ‚âà√≠¬¨¬©
B.	40 ‚âà√≠¬¨¬© ‚Äö√Ñ√∂‚àö√ë‚àö¬® 60 ‚âà√≠¬¨¬©
C.	400 ‚âà√≠¬¨¬© ‚Äö√Ñ√∂‚àö√ë‚àö¬® 600 ‚âà√≠¬¨¬©
D.	300 ‚âà√≠¬¨¬© ‚Äö√Ñ√∂‚àö√ë‚àö¬® 900 ‚âà√≠¬¨¬©
Answer» C. 400 ‚âà√≠¬¨¬© ‚Äö√Ñ√∂‚àö√ë‚àö¬® 600 ‚âà√≠¬¨¬©

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