What three general methods of approach may be employed to lengthen the life or reduce the corrosion of a metal part? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

Which of the chromium steeis is most used for (i) a hard, wear resistant surface, (ii) high temperature oxidation, (ii) maxiinum corrosion resistance. You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

Name three characteristics of a metal surface which might cause corrosion to be localised. You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

What are the important characteristics of electromagnet materials ? What are electromagnet materials ? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

How do diamagnetic, paramagnetic and ferromagnetic materials react when exposed to a magnetic field. You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

Explain the dangers which may be encountered when two materials of different dielectric constant are used in series to form an insulator? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

Define dielectric strength and dielectric constant. You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer.

Explain "skin effect" and "proximity effect”, and describe how they affect the resistance of a conductor? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

Name three good metallic conductors of elasticity and three relatively poor. What non-metallic conductors are important in engineering? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

What are the industrial uses of tin, lead and their alloys ? What are the non-precipitation and precipitation hardening aluminium alloys ? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

Two alloying elements are commonly mixed with aluminium, what are these and how do they affect the properties of aluminium ? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

What special precautions should be observed in designing magnesium castings and what special practices must be used in foundries? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

Many nickel alloys have been developed to satisfy at least one specific requirement? What are these requirements ? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

What are the advantages and disadvantages of zinc alloy die castings? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

What characteristics of aluminium make it resistant to corrosion? How does anodisation increase the corrosion resistance of aluminium ? Do soldered aluminium joints have good resistance to corrosion? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

Which brasses are best adapted to cold working and which to hot working ? Under what conditions can cartridge brass containing 30% zinc be both hot and cold worked successfully? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

What are the various types of brasses ? How are these corroded ? What are the two characteristic kinds of corrosion and what types of brasses are most susceptible to each ? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

What are the three grades of commercial copper and how do they differ in composition ? Which of these grades will you use when strength is the criterion and a cold drawn wire is to be (i) soldered, (ii) gas welded ? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

What characteristic properties of the non-ferrous metals dictate and justify their use inspite of their high cost ? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

Why composite materials are able to obtain very high strength even at very high temperatures. You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

How do copper, aluminium, magnesium, zinc and their alloys compare with plain low-carbon steel in respect of the following properties : (i) magnetic properties, (ii) electrical and thermal conductivity, (iii) melting point, (iv) tensile strength, (v) modulus of elasticity, (vi) cost of metal ? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

Which stainless steel would you recommend for (a) very high strength, (b) Hardness and strength, (c) good weldability, (d) good forming qualities, (e) corrosive environment, good machinability. You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

What is the difference between grey cast iron, white or chilled cast iron, malleable cast iron, and alloyed cast iron? How each is produced and what are the applications of each? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

There are hundreds of varieties of plain carbon and alloy steels used commercially. The various grades are usually distinguished by chemical and physical specifications. What is the method followed by Indian Standards Institution to designate various types of steels ? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer

What are the methods of making wrought iron ? When is wrought iron used instead of steel, even though steel is often less expensive? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer