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Engineering Materials

Engineering Materials
Taps dies and drills contain carbon

Above 1%
Below 0.5%
Below 1%
Above 2.2%

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

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

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Engineering Materials
Ferromagnetic alpha iron exists in temperature range of

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

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Engineering Materials
Eutectoid steel contains following percentage of carbon

0.008
0.0002
0.003
0.0063

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Engineering Materials
Large forgings, crank shafts, axles normally contain carbon up to

0.45 to 0.55%
0.05 to 0.20%
0.20 to 0.45%
0.55 to 1.0%

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

Chromium
Copper
Silicon
Nickel

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