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
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
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.
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