Physical Metallurgy Quiz-1

Question 1

Time: 00:00:00
Ferrous alloys with less carbon content are more susceptible to corrosion sensitization.

True

True

False

False

Can not be determined

Can not be determined

Corrosion does not depends on C content

Corrosion does not depends on C content

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Question 2

Time: 00:00:00
Which of the following neutral elements neither form carbides nor cause graphitization

 

Aluminium

Aluminium

Chromium

Chromium

Cobalt

Cobalt

Copper

Copper

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Question 3

Time: 00:00:00
The rule used to determine composition of various phases in a phase diagram is _____

Gibb’s Phase rule

Gibb’s Phase rule

Lever rule

Lever rule

Both a & b

Both a & b

None of the above

None of the above

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Question 4

Time: 00:00:00
The process of lowering the temperature of a liquid below its freezing point is known as _____

Supercooling

Supercooling

Undercooling

Undercooling

Both a & b

Both a & b

None of the above

None of the above

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Question 5

Time: 00:00:00
Eutectoid steel contains _____

0.4 % Carbon

0.4 % Carbon

0.8 % Carbon

0.8 % Carbon

1.2 % Carbon

1.2 % Carbon

2.2 % Carbon

2.2 % Carbon

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Question 6

Time: 00:00:00
The attractive forces between metal ions and delocalized electrons can be weaken or overcome by

Hammer

Hammer

High Temperature

High Temperature

Water

Water

All of the above

All of the above

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Question 7

Time: 00:00:00
Which carburising method has high production rate?

 

Pack Carburizing

Pack Carburizing

Liquid Carburizing

Liquid Carburizing

Gas Carburizing

Gas Carburizing

All of the above

All of the above

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Question 8

Time: 00:00:00
Why is gray cast iron annealed?

Decrease Ductility

Decrease Ductility

Decrease Machinability

Decrease Machinability

Increase the colour of gray

Increase the colour of gray

Graphitize Carbide

Graphitize Carbide

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Question 9

Time: 00:00:00
Which of the following elements increase/s chilled depth for chilled cast irons?

Silicon

Silicon

Manganese

Manganese

Manganese Sulphide

Manganese Sulphide

All of the above

All of the above

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Question 10

Time: 00:00:00
Which of the following has a fine gold colour and is used for imitation jewellery?

 

Silicon Bronze

Silicon Bronze

Aluminum Bronze

Aluminum Bronze

Gun Metal

Gun Metal

All of the above

All of the above

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September 23, 2019