The brown smoke during the operation of a bessemer Converter indicates that the

Mechanical Engineering : Engineering Materials - Quiz(MCQ)

silicon and manganese has burnt and carbon has started oxidising

air is burning out silicon and managanese

the converter must be titled to remove the contents of the converter

the brown smoke does not occur during the operation of a bessemer converter

Correct Answer : Option (B) : air is burning out silicon and managanese

Recently Updated in Engineering Materials Questions

Babbit metal contains

92% tin, 6% copper and 2% antimony

88% tin, 4% copper and 8% antimony

66% tin, 30% copper and 4% antimony

50% tin and 50% antimony

Correct Answer : 88% tin, 4% copper and 8% antimony

What is the result of full annealing of hypoeutectoid steels?

Bainite

Silicon

Cementite

Coarse pearlite

Correct Answer : Coarse pearlite

Explanation : Hypoeutectoid steels are heated above the A3 line and then cooled in the furnace. Then it removed from the furnace and then cooled at room temperature. This results in coarse pearlite with excess ferrite.

A fine grained steel

is less tough and has a less tendency to distort during heat treatment

is less tough and has a greater tendency to distort during heat treatment

is more ductile and has a less tendency to distort during heat treatment

is more ductile and has a greater tendency to distort during heat treatment

Correct Answer : is more ductile and has a less tendency to distort during heat treatment

Mechanical Engineering MCQ's

Theory of Machines

Engineering Mechanics

Machine Design

Strength of Materials

Engineering Materials

Automobile Engineering

Steam Boilers and Engines