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

Engineering Materials
Which of the following has a fine gold colour and is used for imitation jewellery?

Silicon bronze

Babbitt metal

Gun metal

Aluminium bronze

Silicon bronze

Babbitt metal

Gun metal

Aluminium bronze

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
White cast iron

Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron

Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable

Is produced by annealing process. It is soft, tough and easily machined metal

Is produced by small additions of magnesium (or creium) in the ladle. Graphite is in nodular or spheroidal form and is well dispersed throughout the material

Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron

Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable

Is produced by annealing process. It is soft, tough and easily machined metal

Is produced by small additions of magnesium (or creium) in the ladle. Graphite is in nodular or spheroidal form and is well dispersed throughout the material

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
When medium carbon steel is heated to coarsening temperature

There is no change in grain size

The grain size increases very rapidly

The grain size first increases and then decreases very rapidly

The average grain size is a minimum

There is no change in grain size

The grain size increases very rapidly

The grain size first increases and then decreases very rapidly

The average grain size is a minimum

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
When steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of

Pearlite and cementite

Ferrite and pearlite

Mainly pearlite

Mainly ferrite

Pearlite and cementite

Ferrite and pearlite

Mainly pearlite

Mainly ferrite

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
In process annealing, the hypo eutectoid steel is

Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium

Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace

Heated below or closes to the lower critical temperature and then cooled slowly

Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air

Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium

Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace

Heated below or closes to the lower critical temperature and then cooled slowly

Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
For the allotropic forms of iron, the points of arrest are

The points where no further change occurs

Constant for all metals

The points of discontinuity

The points where there is no further flow of metal

The points where no further change occurs

Constant for all metals

The points of discontinuity

The points where there is no further flow of metal

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials

Engineering Materials Which of the following has a fine gold colour and is used for imitation jewellery?

Engineering Materials White cast iron

Engineering Materials When medium carbon steel is heated to coarsening temperature

Engineering Materials When steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of

Engineering Materials In process annealing, the hypo eutectoid steel is

Engineering Materials For the allotropic forms of iron, the points of arrest are

Engineering Materials
Which of the following has a fine gold colour and is used for imitation jewellery?

Engineering Materials
White cast iron

Engineering Materials
When medium carbon steel is heated to coarsening temperature

Engineering Materials
When steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of

Engineering Materials
In process annealing, the hypo eutectoid steel is

Engineering Materials
For the allotropic forms of iron, the points of arrest are