Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio _____________________?

Related Mcqs:

Depth of hardness of steel is increased by addition of_________________?

A. nickel B. chromium C. tungsten D. vanadium E. ell of the above...

The crystal structure of gamma iron is_________________?

A. body centred cubic B. face centred cubic C. hexagonal close packed D. cubic structure E. orthorhombic crystal...

The ultimate tensile strength of low carbon steel by working at a high strain rate will_________________?

A. decrease B. increase C. remain constant D. first increase and then decrease E. first decrease and then increase...

Malleable cast iron _________________?

A. contains l.7 to 3.5% carbon in free state and is obtained by the slow cooling of molten cast iron B. is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable C. is produced by annealing process. It is soft, tough, and easily machined metal D. is produced … Malleable cast iron _________________?Read More...

The alloy used for making electrical resistances and heating elements is____________________?

A. nichrome B. invar C. magnin D. elinvar E. peiminvar...