Materials and Construction
Straight silicon steel (containing Si from 0.5 to 5%) because of their low hysterisis loss and high magnetic permeability are used for electrical appliances. Which of the following electrical appliances made of silicon steel contains maximum percentage of silicon (about 4%)?

Induction motors
Armature of small motors/generators
Generators and small motors
High frequency transformers

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Materials and Construction
Monel alloy is

Used for making steam valves and turbine blades as it resists steam attack at high temperature
The costliest of all the alloys of nickel
Not suitable for making kitchen utensils
Not used in cast and wrought forms

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