Materials and Construction Lead Is the lightest metal in common use Can not be scratched by finger nails Can not be work hardened Is the hardest metal in common use Is the lightest metal in common use Can not be scratched by finger nails Can not be work hardened Is the hardest metal in common use ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Gunmetal and bronze are not corroded by the action of Synthetic detergent solution Wet chlorine Nitric acid (< 25%) Hydrochloric acid (10%) Synthetic detergent solution Wet chlorine Nitric acid (< 25%) Hydrochloric acid (10%) ANSWER DOWNLOAD EXAMIANS APP
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 High frequency transformers Armature of small motors/generators Generators and small motors Induction motors High frequency transformers Armature of small motors/generators Generators and small motors ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Dilute sulphuric acid is transported in __________ pipes. Lead Copper Special alloys Mild steel Lead Copper Special alloys Mild steel ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction A magnetic material becomes __________ above the Curie temperature. Paramagnetic Ferromagnetic None of these Diamagnetic Paramagnetic Ferromagnetic None of these Diamagnetic ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which one occupies the lowermost position in the electromotive series of metals? Aluminium Zinc Alkali metals (K, Na, Li) Noble metals (Ag, Pt, Au) Aluminium Zinc Alkali metals (K, Na, Li) Noble metals (Ag, Pt, Au) ANSWER DOWNLOAD EXAMIANS APP
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