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Engineering Materials

Engineering Materials
The alloying element which can replace tungsten in high speed steels is

Cobalt
Molybdenum
Vanadium
Nickel

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Engineering Materials
Dislocations in materials refer to the following type of defect

Point defect
Plane defect
Line defect
Volumetric defect

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Engineering Materials
Which of the following is used for bearing liner?

Babbitt metal
Bell metal
Bronze
Gun metal

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Engineering Materials
Delta iron occurs at temperature of

Above melting point
Room temperature
Between 1400°C and 1539°C
Between 910°C and 1400°C

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Engineering Materials
Following elements have face-centered cubic structure

Gamma iron (910° to 1400°C), Cu, Ag, Au, Al, Ni, Pb, Pt
A iron (below 910°C and between 1400 to 1539°C), W
Mg, Zn, Ti, Zr, Br, Cd
All of these

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Engineering Materials
Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is

Silver metal
Duralumin
Hastelloy
Invar

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