Pick out the correct statement.
Hot worked materials are subjected to annealing to remove internal stresses
Annealing of steel hardens it slightly
Normalising of a material induces stresses
Tempering of a material improves ductility & toughness but reduces hardness & brittleness
- __________ has the highest melting point out of the following.
- Depreciation of machines fails under the indirect expenses head. As per income tax regulations, it is…
- Fatigue resistance of a material is measured by the
- Normalising does not __________ of a metal.
- Out of the following, the most malleable material is
- Increase in the entropy of a system represents the
- Drossing is a __________ operation.
- Even though heat transfer co-efficient in boiling liquids is large, use of fins is advantageous, when…
- The unit of gc is
- __________ property of steel increases by addition of large amount of silicon in it.
- The transition temperature at which all the ferromagnetic materials become paramagnetic materials is…
- Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be
- Water-tube boiler is the one, in which
- The pressure drop per unit length for laminar flow of fluid through a long pipe is proportional to (where,…
- Working of linear variable differential transducer (LVDT) is based on the principle of variable
- Glass reacts with
- Catalyst used in the catalytic converter employed in automobiles to convert CO into CO2 and for complete…
- Austempering process results in the formation of __________ structure.
- Steam condenser tubes are made of admiralty brass, in which percentage of zinc & copper are __________…
- The starting of a car takes time in winter, because the
- Which of the following metals is the most prone to work hardening?
- Secondary hardening in steels arises out of the
- In fluid flow, and heat and mass transfer, one encounters (i) kinematic velocity (μ), (ii) molecular…
- For an ideal gas, Cp - Cv is
- If a solid is compressed adiabatically in its elastic range, its __________ remains constant
- The two elements required to form substitutional solid solution should not have
- Force between the molecules of the same substance is called __________ force.
- The joint for soldering is supported by binding wire made of
- Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial…
- The highest stress that a material can withstand for a specified length of time without excessive deformation…