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Engineering Materials

Engineering Materials
Which of the following metal shrinks most from molten state to solid state?

Brass
Admiralty metal
Cast iron
Cast steel

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Engineering Materials
Permalloy is a

Polymer
None ferrous alloy
Kind of stainless steel
Nickel and iron alloy having high permeability

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Engineering Materials
The hardness of steel primarily depends on

Shape of carbides and their distribution in iron
Percentage of carbon
Heat treatment employed
Percentage of alloying elements

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Engineering Materials
Slow plastic deformation of metals under a constant stress is known as

Fatigue
Creep
Endurance
Plastic deformation

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Engineering Materials
Phosphor bronze contains

1% phosphorous
0.5% of phosphorous
None of these
2.5% phosphorous

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Engineering Materials
In the lower part of the blast furnace (zone of fusion), the temperature is

1500°C to 1700°C
1200°C to 1300°C
400° to 700°C
800°C to 1000°C

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