When medium carbon steel is heated to coarsening temperature

Carbon percentage in medium carbon steel is around

A

0.1 to 0.35

B

0.35 to 0.5

C

0.8 to 1.4

D

1 to 1. 5

When low carbon steel is heated up to upper critical temperature

A

There is no change in grain size

B

The average grain size is a minimum

C

The grain size increases very rapidly

D

The grain size first increases and then decreases very rapidly

When low carbon steel is heated up to lower critical temperature

A

There is no change in grain size

B

The average grain size is a minimum

C

The grain size increases very rapidly

D

The grain size first increases and then decreases very rapidly

The cutting speed for drilling aluminium, brass and bronze with carbon steel drills is _________ cutting speed for drilling mild steel with high speed steel drills.

A

Equal to

B

Less than

C

More than

D

None of these

The percentage of carbon in low carbon steel is

A

0.05%

B

0.15%

C

0.3%

D

0.5%

High carbon steel carries carbon percentage

A

0.1 to 0.3%

B

0.3 to 0.6%

C

0.6 to 0.8%

D

0.8 to 1.5%

High carbon steel contains more than __________ percent carbon.

A

0.5

B

2.2

C

2.5

D

2.8

Carbon content in plain carbon steel is __________ percent.

A

0.1 to 0.15

B

0.35 to 0.45

C

0.65 to 0.80

D

0.85 to 1.2

If you need 98 ounces of iron and 2 ounces of carbon to make a sheet of steel. How much iron you need in ounces to make 12 sheet steel?

A

98

B

50

C

49

D

198

Steel with __________ carbon is known as hypo-eutectoid steel.

A

0.8%

B

Below 0.8%

C

Above 0.8%

D

None of these

When medium carbon steel is heated to coarsening temperature

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