Engineering Materials
Which of the following metal is used in making electrical resistance wire for electric furnaces and heating elements?

Phosphor bronze
Monel metal
Nichrome
Babbitt metal

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Engineering Materials
In process annealing, the hypo eutectoid steel is

Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air
Heated below or closes to the lower critical temperature and then cooled slowly
Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace
Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium

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