Runga-Kutta method is used to solve a/an
Pick out the wrong statement.
Recrystallisation temperature of steel is __________ °C.
A spring material should have low
Pick out the wrong statement about coating/electroplating of metals.
More thanof __________ is present in corrundum.
Pressure required to increase the density of water by aboutis __________ atmosphere.
When a tuning fork vibrates, the waves produced in the fork are
In case of a, centrifugal pump, the ratio h1/h2 is termed as the __________ efficiency (where, h1 = actual measured head & h2 = head imparted to the fluid by impeller).
Blow off cock is provided in steam boiler to
Elimination of brittleness resulting from welding of saw blades is done by __________ of the welded portion.
Fatigue limit of a material should not be increased by
In continuous casting process, graphite moulds are used with a view to providing
Thermit welding is categorised as the __________ welding.
Tin plated iron and galvanised iron are generally produced by
Brinell hardness number (BHN) of a material is a number, which has
Work hardening of a material
Plants produce carbohydrates from the CO2 present in the atmosphere by
The function of neutral flux used in the pyrometallurgy of metal extraction is to increase the __________ of the slag.
The maximum stress below which a material can withstand an infinite number of cycle of stress, is termed as the
For a fixed cross-sectional area, the most economical channel section has maximum
Energy required to compress a hot gas as compared to cold gas will be
A gas having a negative Joule-Thompson co-efficient, when throttled, will
In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are made of
Vanadium addition to steel improves its
Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium
Identify the correct statement with reference to the extractive metallurgy of aluminium.
The thermodynamic law, PVy = constant, is not followed by the
Pellets are not as popular a burden as sinter in the iron blast furnace, because of their
In the commercial production of which of the following metals, matallothermic reduction is used ?
Annealing of metal does not
Dezincification is a form of corrosion espe-cially applicable to
A particle is settling in a liquid under Stokesian conditions. The free falling velocity of the particle is proportional to
Pick out the wrong statement about the machinability of metals. Machinability of a metal
A form of stress corrosion failure termed as 'season cracking' is generally observed in
Vanadium addition to steel improves its
New water wells are disinfected with chlorine in the form of
Which of the following is a common constituent of both paint and oil varnish ?
Which of the following materials is not suitable as a die material for wire drawing?
Which of the following is not used as an alloying element in steel used for making permanent magnetic material ?
The refrigerant freon-is chemically
Which of the following phenomenon will exhibit the minimum heat transfer?
In a boundary layer developed along the flow, the pressure decreases in the downstream direction. The boundary layer thickness in this case will
Lithium is a useful alloying addition to aluminium, because it
By X-ray diffraction, it is not possible to determine the
Pick out the wrong statement.
A material is capable of resisting softening at high temperature, because of its property termed as
The underground well of a biogas plant is called the
The delivery pressure of boiler feed water pump compared to the boiler steam pressure is
__________ is a non volatile film forming constituent of a paint.