Chemical Engineering :: Chemical Engineering Basics
-
Powder metallurgy process does not make metal powder by
-
In the blast furnace, incorporation of water vapour in the blast gives the following effect.
-
Pick out the wrong statement.
-
The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.
-
Maximum permissible air velocity in pipelines is about __________ metre/second.
-
Area under the stress-strain curve upto the __________ is referred to as the modulus of resilience.
-
__________ is the hardest oxide and is hence used where high wear resistance at high temperature is required.
-
Titanium alloys are welded using the Following process:
-
An alloy of Fe - 0.4 % C is
-
A material in which the atoms are arranged regularly in some directions but not in others, is termed as 'mesomorphous material'; an example of which is
Whatsapp
Facebook
|
A.
A ferromagnetic material becomes paramagnetic above the 'Curie temperature'.
|
|
B.
Permanent magnets are made of hard materials, whereas electromagnets require soft magnetic materials.
|
|
C.
Soft magnetic materials (e.g., pure iron) have higher permeability and low hysterisis loss and coercive forces.
|
|
D.
Tungsten steel and alnico are not hard magnetic materials.
|