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Materials and Construction

Materials and Construction
High resistance electrical heating elements/wire are not made of

Nimonic alloys
Nichrome
Kanthal wire
Marageing steel

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Materials and Construction
Presence of nitrogen in steel

Increases its strength
Is desirable
Makes it brittle
Increases its hardness

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Materials and Construction
Addition of lead, sulphur and phosphorus to low carbon steel helps in improving its

Compressive strength
Tensile strength
Machinability
Corrosion resistance

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Materials and Construction
Material of construction of pipe generally used for conveying water in India is

Stainless steel
Lead lined steel
Wrought iron
Cast iron

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Materials and Construction
Condenser tubes are not made of

Muntz brass
Cartridge brass
Wood metal
Aluminium brass alloy

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Materials and Construction
Which has the maximum melting point out of the following?

Wrought iron
Stainless steel
Steel
Cast iron

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MORE MCQ ON Materials and Construction

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