1.

Which among the following alloys is used making instruments for electrical measurnments?A. Stainless steelB. ManganinC. SpiegeleisenD. Duralumin

Answer» Correct Answer - B
Manganin containing `Cu(84%), Mn(12%)` and `Ni(4%)` has almost zero temperature coefficient of electrical resistance and hence used in instrument used for making electrical measurnment.


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