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Engineering Materials

Engineering Materials
Which of the following alloys does not have copper as one of the constituents?

Monel metal
Constantan
Nichrome
Delta metal

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Engineering Materials
Which of the following elements does not impart hardness to steel?

Chromium
Copper
Nickel
Silicon

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Engineering Materials
Connecting rod is usually made of

Medium carbon steel
High carbon steel
Aluminium
Low carbon steel

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Engineering Materials
The presence of hydrogen in steel causes

Reduced neutron absorption cross-section
Corrosion resistance
Improved Weldability
Embrittlement

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Engineering Materials
The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to 100°C will

Remain same
Increase
Decrease
First increase and then decrease

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Engineering Materials
Recrystallization temperature can be lowered by

Purification of metal
Working at lower temperature
All of these
Grain refinement

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