The electrical conductivity of a ______________ decreases with rise in temperature?

Related Mcqs:

Lead pipe is_____________________?

A. Especially resistant to solutions containing H2SO4 B. Usually joined by burning (e.g. by melting to adjacent pieces with a torch) C. Having very low elastic limit resulting in permanent deformation from either mechanical or thermal strain D. All A., B. and C....

The increase in hardness of metal due to its cold working is termed as the _______________ hardening?

A. Work B. Age C. Induction D. Flame...

_____________ of a material results, when its strength is increased & ductility is decreased by heating at a relatively lower temperature after cold working?

A. Solid solution hardening B. Screw dislocation C. Strain ageing D. Twinning...

Steel balls for ball bearings are generally made of ______________ steel?

A. Cast B. Stainless C. Free carbon D. Carbon chrome...

Monel metal is an alloy of__________________?

A. Molybdenum and nickel B. Nickel and copper C. Molybdenum and aluminium D. Molybdenum and zinc...