Materials and Construction A material capable of undergoing large permanent deformation, when subjected to tension is termed as None of these Friable Brittle Ductile None of these Friable Brittle Ductile ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction All materials obey Hooke's law within elastic limit. When elastic limit is reached, the tensile strain Decreases in proportion to stress Decreases very quickly Increases very quickly Increases in proportion to stress Decreases in proportion to stress Decreases very quickly Increases very quickly Increases in proportion to stress ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction With increase in carbide/graphite ratio in cast iron, its Hardness & brittleness increases Neither A nor B Ductility decreases Both A & B Hardness & brittleness increases Neither A nor B Ductility decreases Both A & B ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction An elastic behaviour of materials is expressed in terms of Hysterisis loop area Stress-strain curve Relaxation time None of these Hysterisis loop area Stress-strain curve Relaxation time None of these 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 Invar used in thermocouples is an alloy of nickel and Iron Copper Chromium Lead Iron Copper Chromium Lead ANSWER DOWNLOAD EXAMIANS APP
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