The transition temperature at which all the ferromagnetic materials become paramagnetic materials is termed as the 'Curie temperature'. Its value for cobalt is __________ °C.
768
1127
1359
1480
- Dephosphorization of molten pig iron is favoured by
- The type of pump used for lifting large quantity of sewage is a __________ pump.
- Steam condenser tubes are made of admiralty brass, in which percentage of zinc & copper are __________…
- At the point of boundary layer separation in fluid flow, the
- Factor of safety is the ratio of the __________ stress to the working stress.
- Wave length of X-rays is about 1 angstrom; however it cannot pass through a sheet of
- Resistance of an electrical conductor is proportional to its (where, l = length and A = cross-sectional…
- A dummy activity is used in PERT network to describe the
- Titanium is produced by __________ of Ti Cl4.
- In the blast furnace, incorporation of water vapour in the blast gives the following effect.
- Isotropic materials have the same __________ in all directions.
- The behaviour of a metal specimen, which when plastically strained in tension reduces its yield stress…
- The unit of gc is
- Lead is poured into the joints between two __________ pipes.
- Encyclopaedia of Chemical Technology has been
- Tumbling is the process of improving the __________ of the materials/parts.
- With increase in annealing temperature, the following defect density decreases.
- Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal &…
- Principal alloying element in Elinvar (used for making hair springs for watches) is
- Glycerine is used as a coolant in cooling of some engines instead of water, because
- Corrosion rate cannot be lowered by reducing the __________ of the corroding medium.
- In case of simple harmonic motion, displacement is proportional to the
- Work done by a/an __________ process is determined by ∫p. dv
- Limestone addition in the blast furnace is done to flux __________ present in the raw materials.
- A particle is settling in a liquid under Stokesian conditions. The free falling velocity of the particle…
- Which of the following is not a characteristic observed in material failure by fatigue fracture?
- Fibrous fracture is normally encountered in the __________ materials.
- __________ test determines the yield strength, Young's modulus of elasticity, percentage reduction in…
- Corrosion of metals cannot be prevented by its
- Maximum change in the hardness of martensite occurs in the carbon content range of __________ percent…