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Engineering Materials

Engineering Materials
Maximum percentage of carbon in austenite is

0.017
0.00025
0.0026
0.008

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Engineering Materials
Addition of silicon to aluminium results in

Improving machinability
Improvement of corrosion resistance
Improvement of casting characteristics
One of the best known age and precipitation hardening systems

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Engineering Materials
In which of the following cases, consideration of creep is important

Flywheel of steam engine
Gas turbine blades
Cast iron pipes
Cycle chains

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Engineering Materials
If a refractory contains high content of silicon, it means refractory is

Basic
Acidic
Brittle
Neutral

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Engineering Materials
Which is false statement about case hardening? Case hardening is done by

Nitriding
Cyaniding
Electroplating
Induction hardening

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Engineering Materials
Isotropic materials are those which have the same

Electric and magnetic properties in all directions
Thermal properties in all directions
Elastic properties in all directions
Stresses induced in all directions

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