Which of the following crystal structures characterises the ferritic stainless steel?

Which of the following crystal structures characterises the austenitic stainless steel?

A

Simple hexagonal

B

Body centred cubic

C

Face centred cubic

D

None of these

__________ is added in stainless steel to prevent inter crystal corrosion.

A

Vanadium

B

Niobium

C

Chromium

D

Nickel

Which of the following characterises the desert forests?

A

Pointed leaves

B

Dense leaves

C

Canopy leaves

D

Broad leaves

Working of a __________ pump characterises mixed flow.

A

Turbine

B

Piston

C

Diaphragm

D

None of these

Ferric stainless steels compared to austenitic stainless steels

A

Have lower corrosion resistance

B

Are harder to fabricate

C

Are less ductile and hence less suitable for cold pressing

D

All of the above

Stainless steel is usually made by alloying the steel with

A

Copper and nickel

B

Copper and chromium

C

Chromium and nickel

D

Manganese and copper

Stainless steel এ steel ছাড়া আর কী থাকে?

A

chromium

B

vanadium

C

manganese

D

nickel

Which of the following elements is not present in stainless steel?

A

Iron

B

Tungsten

C

Chromium

D

Nickel

Stainless steel is welded using

A

oxy-acetylene flame

B

oxy-hydrogen flame

C

arc welding

D

inert gas arc welding

The point angle of a drill, for drilling stainless steel, is

A

90°

B

118°

C

135°

D

150°

Which of the following crystal structures characterises the ferritic stainless steel?

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