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Engineering Materials

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

Silver metal
Hastelloy
Duralumin
Invar

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Engineering Materials
The main alloying elements high speed steel in order of increasing proportion are

Tungsten, titanium, vanadium
Tungsten, chromium, titanium
Chromium, titanium, vanadium
Vanadium, chromium, tungsten

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Engineering Materials
The defect which takes place due to imperfect packing of atoms during crystallization is known as

None of these
Line defect
Point defect
Surface defect

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Engineering Materials
Which of the following has a fine gold colour and is used for imitation jewellery?

Babbitt metal
Aluminium bronze
Gun metal
Silicon bronze

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Engineering Materials
Ferromagnetic alpha iron exists in temperature range of

770 to 910°C
910 to 1440°C
Below 723°C
1400 to 1539°C

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Engineering Materials
The metal suitable for bearings subjected to heavy loads, is

Silicon bronze
Monel metal
Phosphor bronze
White metal

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