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Engineering Materials

Engineering Materials
The hardness of steel increases if it contains

Martensite
Pearlite
Austenite
Cementite

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Engineering Materials
Cementite consist of

13% cementite and 87% ferrite
13% carbon and 87% ferrite
13% ferrite and 87% cementite
6.67% carbon and 93.33% iron

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Engineering Materials
Hematite iron ore contains iron about

0.55
0.45
0.7
0.3

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Engineering Materials
The machinability of steel is increased by

Sulphur, graphite and aluminium
Phosphorous, lead and sulphur
Silicon and sulphur
Phosphorous and aluminium

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Engineering Materials
Beryllium bronze contains

80% copper and 20% beryllium
97.75% copper and 2.25% beryllium
60% copper and 40% beryllium
99% copper and 1% beryllium

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Engineering Materials
The machinability of steel is improved by adding

Nickel
Sulphur, lead and phosphorus
Nickel and chromium
Chromium

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MORE MCQ ON Engineering Materials

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