Which of the following terminal of the power supply should be connected to the metal to be protected?(a) Negative terminal(b) Positive terminal(c) Both positive and negative terminals(d) Either positive or negative terminalThe question was asked during an interview for a job.My question is based upon Cathodic and Anodic Protection topic in section Corrosion Prevention of Corrosion Engineering

Which of the following terminal of the power supply should be connecte

1.	Which of the following terminal of the power supply should be connected to the metal to be protected?(a) Negative terminal(b) Positive terminal(c) Both positive and negative terminals(d) Either positive or negative terminalThe question was asked during an interview for a job.My question is based upon Cathodic and Anodic Protection topic in section Corrosion Prevention of Corrosion Engineering
Answer» Correct answer is (a) Negative TERMINAL Explanation: As the conventional ELECTRICAL theory states that CURRENT flows from (+) to (-), the STRUCTURE is protected if the negative terminal of the power supply is connected metallic structure.

Discussion

No Comment Found

Related InterviewSolutions

The most common method of preventing corrosion is the selection of the proper metal or alloy for a particular corrosive service.(a) True(b) FalseThis question was posed to me by my school principal while I was bunking the class.The question is from Prevention topic in portion Corrosion Prevention of Corrosion Engineering
Which of the corrosion prevention method is used for reducing the maintenance cost of highway and bridges?(a) Sacrificial anode(b) Impressed current supply(c) Anodic protection(d) Use of inhibitorsThis question was posed to me during an internship interview.This question is from Cathodic and Anodic Protection in portion Corrosion Prevention of Corrosion Engineering
Which of the following is/are the factors of electroplating that effects efficiency?(a) Temperature and composition of the bath(b) Composition of bath and time(c) Temperature, the composition of the bath, time and current density(d) Current density and composition of the bathThis question was posed to me during an online exam.The above asked question is from Corrosion Prevention topic in division Corrosion Prevention of Corrosion Engineering
Which of the following is/are the limitations of inhibitors?(a) It contaminates the environment(b) Inhibitors are toxic(c) Its efficiency decreases with time and temperature(d) It contaminates the environment, toxic in nature, and its efficiency decreases with time and temperature.The question was posed to me in semester exam.The doubt is from Corrosion Prevention in section Corrosion Prevention of Corrosion Engineering
Which of the following inhibitor is used for steel in the water?(a) Sodium silicate(b) Alkali metal nitrates(c) Benzoic acid(d) 2% boron trifluorideThis question was addressed to me in an interview for job.This question is from Corrosion Prevention topic in chapter Corrosion Prevention of Corrosion Engineering
Which of the following is/are the unique advantages of anodic protection?(a) To monitor instantaneous corrosion rate(b) Operating conditions can be established in the lab(c) It is applicable for all type of metals(d) To monitor instantaneous corrosion rate and operating conditions can be established in the labI have been asked this question in unit test.The doubt is from Cathodic and Anodic Protection in section Corrosion Prevention of Corrosion Engineering
Which of the following is/are factors to consider for organic coatings?(a) Surface preparation only(b) Surface preparation and selection of primary coating(c) Surface preparation and selection of primary and top coatings(d) Selection of primary and top coatingsI have been asked this question during an internship interview.This intriguing question originated from Corrosion Prevention topic in section Corrosion Prevention of Corrosion Engineering
Which of the following reference electrode is used for cathodic-protection surveys?(a) Standard hydrogen electrode(b) Copper/copper sulfate reference electrode(c) Calomel electrode(d) Either calomel or standard hydrogen electrodeI got this question in class test.Asked question is from Cathodic and Anodic Protection in portion Corrosion Prevention of Corrosion Engineering
Which of the metallic structure will require more impressed current density for cathodic protection?(a) Water heaters in hot freshwater(b) Underground pipelines(c) The storage tank of H2SO4(d) Reinforcement rodsThis question was addressed to me in a job interview.The query is from Cathodic and Anodic Protection in chapter Corrosion Prevention of Corrosion Engineering
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 anodeThis question was posed to me by my college director while I was bunking the class.This key question is from Cathodic and Anodic Protection in chapter Corrosion Prevention of Corrosion Engineering

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment