Which of the following is/are the types of cathodic protection? – McqOptions

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1.	Which of the following is/are the types of cathodic protection?
A.	External impressed current supply
B.	Sacrificial anode
C.	External impressed current supply and sacrificial anode
D.	Neither external impressed current supply nor sacrificial anode
Answer» D. Neither external impressed current supply nor sacrificial anode

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