The presence of hydrogen in steel causes

Engineering Materials
The presence of hydrogen in steel causes

Corrosion resistance

Improved Weldability

Reduced neutron absorption cross-section

Embrittlement

Corrosion resistance

Improved Weldability

Reduced neutron absorption cross-section

Embrittlement

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Engineering Materials
Drop forging dies contain carbon of the order of

0.1 to 0.2%

0.7 to 0.9%

0.6 to 0.7%

0.25 to 0.5%

0.1 to 0.2%

0.7 to 0.9%

0.6 to 0.7%

0.25 to 0.5%

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Engineering Materials
When medium carbon steel is heated to coarsening temperature

There is no change in grain size

The grain size first increases and then decreases very rapidly

The grain size increases very rapidly

The average grain size is a minimum

There is no change in grain size

The grain size first increases and then decreases very rapidly

The grain size increases very rapidly

The average grain size is a minimum

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Engineering Materials
Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?

Sulphur

Manganese

Phosphorus

Silicon

Sulphur

Manganese

Phosphorus

Silicon

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Engineering Materials
White cast iron

Is produced by annealing process. It is soft, tough and easily machined metal

Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable

Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron

Is produced by small additions of magnesium (or creium) in the ladle. Graphite is in nodular or spheroidal form and is well dispersed throughout the material

Is produced by annealing process. It is soft, tough and easily machined metal

Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable

Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron

Is produced by small additions of magnesium (or creium) in the ladle. Graphite is in nodular or spheroidal form and is well dispersed throughout the material

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Engineering Materials
Which of the following is used for bearing liner?

Babbitt metal

Gun metal

Bronze

Bell metal

Babbitt metal

Gun metal

Bronze

Bell metal

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Engineering Materials

Engineering Materials The presence of hydrogen in steel causes

Engineering Materials Drop forging dies contain carbon of the order of

Engineering Materials When medium carbon steel is heated to coarsening temperature

Engineering Materials Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?

Engineering Materials White cast iron

Engineering Materials Which of the following is used for bearing liner?

Engineering Materials
The presence of hydrogen in steel causes

Engineering Materials
Drop forging dies contain carbon of the order of

Engineering Materials
When medium carbon steel is heated to coarsening temperature

Engineering Materials
Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?

Engineering Materials
White cast iron

Engineering Materials
Which of the following is used for bearing liner?