The ultimate tensile strength of low carbon steel by working at a high strain rate will

A cylinderical rod subjected to a tensile strain within the elastic limit undergoes a volume change. If the volume strain is equal to half the tensile strain, then the Poisson's ratio of the rod is

A

0

B

0.33

C

0.44

D

0.25

For steel, the ultimate strength in shear as compared to ultimate strength in tension is

A

$$\frac{1}{2}$$

B

$$\frac{1}{3}$$

C

$$\frac{1}{4}$$

D

$$\frac{2}{3}$$

The ultimate strength in tension for steel is __________ times the ultimate strength in shear.

A

0.5

B

0.9

C

1.5

D

2.5

The ultimate tensile stress for mild steel is __________ the ultimate compressive stress.

A

Equal to

B

Less than

C

More than

D

None of these

The ultimate tensile stress of mild steel compared to ultimate compressive stress is

A

Same

B

More

C

Less

D

Unpredictable

In a tensile test on mild steel specimen, the breaking stress as compared to ultimate tensile stress is

A

More

B

Less

C

Same

D

More/less depending on composition

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

Stress strain curve of high tensile steel

A

Has a definite yield point

B

Does not show definite yield point but yield point is defined by 0.1% proof stress

C

Does not show definite yield point but yield point is defined by 0.2% proof stress

D

Does not show definite yield point but yield point is defined by 2% proof stress

In a tensile test, when the material is stressed beyond elastic limit, the tensile strain __________ as compared to the stress.

A

Decreases slowly

B

Increases slowly

C

Decreases more quickly

D

Increases more quickly

Ultimate strength of cold drawn high steel wires

A

Increases with increase in diameter of bar

B

Decreases with increase in diameter of bar

C

Does not depend on diameter of bar

D

None of the above

The ultimate tensile strength of low carbon steel by working at a high strain rate will

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