For a first order chemical reaction, the concentration of the reactant decreases __________ with time.
For a first order chemical reaction, the concentration of the reactant decreases __________ with time.
Reduction in the grain size reduces the __________ of the material.
Reduction in the grain size reduces the __________ of the material.
Which of the following relatively employs the highest heat transfer surface area in a high pressure boiler ?
Which of the following relatively employs the highest heat transfer surface area in a high pressure boiler ?
Thermal expansion of solid is employed in the temperature measurement by a
Thermal expansion of solid is employed in the temperature measurement by a
The main charge in blast furnace is usually
The main charge in blast furnace is usually
Which of the following material handling equipments is not suitable for moving materials in varying paths?
Which of the following material handling equipments is not suitable for moving materials in varying paths?
Sheardising process is used for
Sheardising process is used for
__________ furnace is generally used in the non-ferrous foundaries.
__________ furnace is generally used in the non-ferrous foundaries.
Window panes of aeroplanes are normally made of
Window panes of aeroplanes are normally made of
Other parameters remaining same, the recrystallisation temperature of an alloy is lowered, when
Other parameters remaining same, the recrystallisation temperature of an alloy is lowered, when
Pick out the correct statement.
Pick out the correct statement.
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
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
Electrolytes conduct electric current by
Electrolytes conduct electric current by
Minimum diameter of the tube used for making water manometer should be __________ mm to avoid a correction for the effect of capillarity.
Minimum diameter of the tube used for making water manometer should be __________ mm to avoid a correction for the effect of capillarity.
Presence of sulphur in steel reduces the
Presence of sulphur in steel reduces the
Gross & Net calorific values will be the same for
Gross & Net calorific values will be the same for
Co-efficient of performance of a Carnot cycle refrigerator operating between - 23°C and + 27°C is
Co-efficient of performance of a Carnot cycle refrigerator operating between - 23°C and + 27°C is
Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of __________ will facilitate the most accurate measurement of the temperature.
Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of __________ will facilitate the most accurate measurement of the temperature.
Maximum change in the hardness of mar tensite occurs in the carbon content range of __________ percent in steel.
Maximum change in the hardness of mar tensite occurs in the carbon content range of __________ percent in steel.
Carbon percentage in high speed steel tool material is 0.6 to 1.0. The hardness of carbon tool steels is increased, when it is alloyed with
Carbon percentage in high speed steel tool material is 0.6 to 1.0. The hardness of carbon tool steels is increased, when it is alloyed with
Pick out the wrong statement.
Pick out the wrong statement.
Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner?
Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner?
The boiling & freezing points on a newly defined temperature scale in degree 'D' are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to __________ °D.
The boiling & freezing points on a newly defined temperature scale in degree 'D' are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to __________ °D.
__________ number is sometimes used in place of Grashoff number in free convection heat transfer.
__________ number is sometimes used in place of Grashoff number in free convection heat transfer.
Steel is welded using the __________ flame.
Steel is welded using the __________ flame.
In a neutral solution
In a neutral solution
Liquid nitrogen containers can be made from
Liquid nitrogen containers can be made from
The heat of neutralisation remains constant, when there is a reaction between dilute solutions of strong
The heat of neutralisation remains constant, when there is a reaction between dilute solutions of strong
Photographic plates are coated with
Photographic plates are coated with
Nickel and __________ are the alloying element added in steel to increase its toughness.
Nickel and __________ are the alloying element added in steel to increase its toughness.
Hypo (sodium thiosulphate) because of its complex forming behaviour is used in photography to remove undecomposed silver bromide as a soluble complex for __________ of the picture.
Hypo (sodium thiosulphate) because of its complex forming behaviour is used in photography to remove undecomposed silver bromide as a soluble complex for __________ of the picture.
For the Stoke's law to be valid in the case of a falling sphere in a fluid, the
For the Stoke's law to be valid in the case of a falling sphere in a fluid, the
The ultimate strength in tension for steel is __________ times the ultimate strength in shear.
The ultimate strength in tension for steel is __________ times the ultimate strength in shear.
The main constituent of bones is
The main constituent of bones is
In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C.
In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C.
Which of the following does not lower the surface tension of liquids ?
Which of the following does not lower the surface tension of liquids ?
Which of the following transducers is most commonly used for the measurement of shock and vibration ?
Which of the following transducers is most commonly used for the measurement of shock and vibration ?
The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the __________ of a boiler.
The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the __________ of a boiler.
Nitriding of a steel part does not increase its
Nitriding of a steel part does not increase its
The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element.
The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element.
Property responsible for the talcum powder to cling to the skin is the
Property responsible for the talcum powder to cling to the skin is the
Number of electrons in the outermost shell of a semi-conductor material is
Number of electrons in the outermost shell of a semi-conductor material is
The cost of providing service in a queing system decreases with the
The cost of providing service in a queing system decreases with the
Softening of hardned steel is done by its
Softening of hardned steel is done by its
Cathodic protection is widely used in controlling corrosion in
Cathodic protection is widely used in controlling corrosion in
Out of the following __________ iron has the best capability to bear sudden & excessive shocks.
Out of the following __________ iron has the best capability to bear sudden & excessive shocks.
Function of fusible plug in a boiler is to
Function of fusible plug in a boiler is to
__________ has a negative co-efficient of linear expansion.
__________ has a negative co-efficient of linear expansion.
Even minute presence of impurities in copper impairs its electrical conductivity seriously. Electrolytic refinning of blister copper is resorted to, when
Even minute presence of impurities in copper impairs its electrical conductivity seriously. Electrolytic refinning of blister copper is resorted to, when
The Al2 O₃ content of cryolite in Hall-Heroult's cell is maintained between __________ percent.
The Al2 O₃ content of cryolite in Hall-Heroult's cell is maintained between __________ percent.
Galvanic corrosion
Galvanic corrosion
Out of the following, the __________ pipe has the least corrosion resistance.
Out of the following, the __________ pipe has the least corrosion resistance.
Air intake for an air compressor should be preferably taken from
Air intake for an air compressor should be preferably taken from
Metallic surveying tapes are made of __________ which has a low co-efficient of expansion & enough strength.
Metallic surveying tapes are made of __________ which has a low co-efficient of expansion & enough strength.
Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.
Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.
Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is
Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is
Factor of safety in machine design is defined as the ratio of ultimate stress to __________ stress.
Factor of safety in machine design is defined as the ratio of ultimate stress to __________ stress.
Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism.
Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism.
The starting of a car takes time in winter, because the
The starting of a car takes time in winter, because the
Increasing the temperature of a material makes it
Increasing the temperature of a material makes it
Which of the following materials does not form adherent oxide film on surface?
Which of the following materials does not form adherent oxide film on surface?
Which of the following is termed as the boiler mounting ?
Which of the following is termed as the boiler mounting ?
In Newton's law of viscosity, which states that the shear stress is proportional to the __________ Co-efficient of viscosity is called dynamic or absolute viscosity(where, V = velocity, Vg = velocity gradient ).
In Newton's law of viscosity, which states that the shear stress is proportional to the __________ Co-efficient of viscosity is called dynamic or absolute viscosity(where, V = velocity, Vg = velocity gradient ).
Volumetric composition of flue gas analysed with the Orsat apparatus is : CO₂ = 12%, O₂ = 8%, CO = nil, N₂ = 80%. This flue gas composition indicates that
Volumetric composition of flue gas analysed with the Orsat apparatus is : CO₂ = 12%, O₂ = 8%, CO = nil, N₂ = 80%. This flue gas composition indicates that
Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.
Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.
Fog is an example of colloidal system of
Fog is an example of colloidal system of
Identify the false statement
Identify the false statement
Encyclopaedia of Chemical Technology has been
Encyclopaedia of Chemical Technology has been
The value of y = cp/cv. at < 500°C for air & most common gases can be safely assumed to be
The value of y = cp/cv. at < 500°C for air & most common gases can be safely assumed to be
The rolling process can not be used to produce
The rolling process can not be used to produce
Superheating of steam is done at constant
Superheating of steam is done at constant
The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/ cm².
The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/ cm².
Safety matches is produced using
Safety matches is produced using
Steels with high carbon equivalent have poor weldability, because in these steels during welding
Steels with high carbon equivalent have poor weldability, because in these steels during welding
Two stroke engine compared to a four stroke engine has
Two stroke engine compared to a four stroke engine has
In chemical dehumidification of air
In chemical dehumidification of air
Hydrogen can be
Hydrogen can be
Fatigue life is expected to increase by
Fatigue life is expected to increase by
The lightest non-inflammable gas is
The lightest non-inflammable gas is
In inventory control theory, the economic order quantity (EOQ) is the
In inventory control theory, the economic order quantity (EOQ) is the
Flywheel is provided in a machine to
Flywheel is provided in a machine to
The primary strengthening mechanism in 70 : 30 brass is the
The primary strengthening mechanism in 70 : 30 brass is the
A metal having a Poisson's ratio = 0.3 is elastically deformed under uniaxial tension. If the longitudinal strain = 0.8, then the magnitude of thickness strain is
A metal having a Poisson's ratio = 0.3 is elastically deformed under uniaxial tension. If the longitudinal strain = 0.8, then the magnitude of thickness strain is
In a good rimming steel
In a good rimming steel
Which of the following has the highest modulus of elasticity (about 7 x 10⁶ kg/cm²) ?
Which of the following has the highest modulus of elasticity (about 7 x 10⁶ kg/cm²) ?
__________ addition increases the depth of hardness of steel.
__________ addition increases the depth of hardness of steel.
Tin based white metals are used, where bearings are subjected to
Tin based white metals are used, where bearings are subjected to
Broaching tools are usually made of
Broaching tools are usually made of
Freezing of 35% oleum during its shipment in winter is avoided by the addition of small amount of
Freezing of 35% oleum during its shipment in winter is avoided by the addition of small amount of
The tensile load-elongation curve of a metal does not describe
The tensile load-elongation curve of a metal does not describe
Hot & cold working of material causes its __________ deformation.
Hot & cold working of material causes its __________ deformation.
Which of the following is the most suitable abrasive for grinding high tensile strength materials?
Which of the following is the most suitable abrasive for grinding high tensile strength materials?
Addition of silicon to aluminium improves its
Addition of silicon to aluminium improves its
Principal alloying element in Elinvar (used for making hair springs for watches) is
Principal alloying element in Elinvar (used for making hair springs for watches) is
'GASOHOL' widely used in Brazil as a motor fuel is a mixture of alcohol and
'GASOHOL' widely used in Brazil as a motor fuel is a mixture of alcohol and
Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is
Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is
The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.
The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.
Heat dissipation in cooling towers is mainly by
Heat dissipation in cooling towers is mainly by
Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of __________ will facilitate the most accurate measurement of the temperature.
Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of __________ will facilitate the most accurate measurement of the temperature.
Which of the following is used to produce draught in the locomotive boilers ?
Which of the following is used to produce draught in the locomotive boilers ?
Joining of thin foils is preferred to be done by
Joining of thin foils is preferred to be done by
Lead percentage in pure galena is about
Lead percentage in pure galena is about
Electrochemical corrosion occurs
Electrochemical corrosion occurs
Faraday's law of electrolysis is related to the
Faraday's law of electrolysis is related to the
Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity)
Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity)
Thermal conductivity of a material does not depend upon its
Thermal conductivity of a material does not depend upon its
Boiler rating is normally done in terms of
Boiler rating is normally done in terms of
Earing is a defect found in steels after the following metal working operation (s).
Earing is a defect found in steels after the following metal working operation (s).
The maximum value, which the residual stress in a material can reach is the __________ of the material.
The maximum value, which the residual stress in a material can reach is the __________ of the material.
Viscoelastic behaviour is observed in __________ materials.
Viscoelastic behaviour is observed in __________ materials.
Which of the following metals occurs in nature in their free metallic state?
Which of the following metals occurs in nature in their free metallic state?
Malleabilisation heat treatment is performed on
Malleabilisation heat treatment is performed on
Pick out the correct statement.
Pick out the correct statement.
Stellite is a trade name for the
Stellite is a trade name for the
Pick out the correct statement.
Pick out the correct statement.
Dialysis is the process of separating substances in the
Dialysis is the process of separating substances in the
Material of construction of the electrode used in the electric resistance welding is
Material of construction of the electrode used in the electric resistance welding is
The conventional mechnical transducer, which converts pressure signal to displacement signal is
The conventional mechnical transducer, which converts pressure signal to displacement signal is
Which of the following has the least value of ultimate tensile strength (UTS)?
Which of the following has the least value of ultimate tensile strength (UTS)?
Catalyst used in the 'catalytic converter' employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is
Catalyst used in the 'catalytic converter' employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is
The life of a ball bearing is inversely proportional to
The life of a ball bearing is inversely proportional to
Fine grained steels have
Fine grained steels have
If Reynolds number is greater than 1, then the
If Reynolds number is greater than 1, then the
Which of the following is not categorised as the ore agglomeration process?
Which of the following is not categorised as the ore agglomeration process?
In an isochoric process,
In an isochoric process,
'Ice point' is designated on Farenhite temperature scale by
'Ice point' is designated on Farenhite temperature scale by
A material expanding freely due to heating will develop __________ stress.
A material expanding freely due to heating will develop __________ stress.
The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be
The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be
Matte smelting is used in the extraction of
Matte smelting is used in the extraction of
Even though heat transfer co-efficients in boiling liquids is large, use of fins is advantageous, when the entire surface is exposed to __________ boiling.
Even though heat transfer co-efficients in boiling liquids is large, use of fins is advantageous, when the entire surface is exposed to __________ boiling.
Which of the following hardness tests uses the depth of penetration caused by the indentor as the parameter for arriving at the hardness value of a material ?
Which of the following hardness tests uses the depth of penetration caused by the indentor as the parameter for arriving at the hardness value of a material ?
Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of
Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of
Gas carrying pipelines are best joined by
Gas carrying pipelines are best joined by
Reduction reaction involves the
Reduction reaction involves the
For a spontaneous natural process at constant temperature and pressure, the free energy of the system always
For a spontaneous natural process at constant temperature and pressure, the free energy of the system always
Volute casing of a centrifugal pump does not facilitate
Volute casing of a centrifugal pump does not facilitate
Which of the following is not an ore of aluminium?
Which of the following is not an ore of aluminium?
A fine grained grinding wheel should not be used for grinding __________ materials.
A fine grained grinding wheel should not be used for grinding __________ materials.
Silicon percentage in silicon steel used for electrical equipments is about
Silicon percentage in silicon steel used for electrical equipments is about
The underground well of a biogas plant is called the
The underground well of a biogas plant is called the
Out of the following, the rays having the lowest wavelength is the
Out of the following, the rays having the lowest wavelength is the
__________ is a special constituent of chlorophyll without which photosynthesis is not possible.
__________ is a special constituent of chlorophyll without which photosynthesis is not possible.
Which of the following exemplifies resemblence with the extrusion process ?
Which of the following exemplifies resemblence with the extrusion process ?
According to thermodynamic Farenhite scale, the fundamental interval between ice point to steam point is
According to thermodynamic Farenhite scale, the fundamental interval between ice point to steam point is
Galena is an ore of
Galena is an ore of
The atmospheric temperature during melting of ice/snow (in the atmosphere)
The atmospheric temperature during melting of ice/snow (in the atmosphere)
Which of the following is a neutral flux used in the pyrometallurgy of metal extraction?
Which of the following is a neutral flux used in the pyrometallurgy of metal extraction?
What happens, when SO₂ is passed through a solution of H₂S in water?
What happens, when SO₂ is passed through a solution of H₂S in water?
Welded joint is superior to revetted joint in respect of ease of fabrication, weight and strength. Which of the following joints is the most suitable for pipes carrying fluids under high pressure and temperature?
Welded joint is superior to revetted joint in respect of ease of fabrication, weight and strength. Which of the following joints is the most suitable for pipes carrying fluids under high pressure and temperature?
Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with be
Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with be
Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10⁻² atm, the partial pressure of B is 10⁻³ atm and the partial pressure of AB is 1 atm, the equilibrium constant 'K' is
Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10⁻² atm, the partial pressure of B is 10⁻³ atm and the partial pressure of AB is 1 atm, the equilibrium constant 'K' is
Material having negative co-efficient of linear expansion is
Material having negative co-efficient of linear expansion is
Ammonia leakage in the refrigeration system is detected by
Ammonia leakage in the refrigeration system is detected by
Three elastic constants for a completely anisotropic elastic material which follows the Hooke's law are young's modulus, elastic limit stress and yield stress. Which of the following properties is most sensitive to increase in strain rate ?
Three elastic constants for a completely anisotropic elastic material which follows the Hooke's law are young's modulus, elastic limit stress and yield stress. Which of the following properties is most sensitive to increase in strain rate ?
__________ of austenite decreases the hardenability in steel.
__________ of austenite decreases the hardenability in steel.
Pick out the wrong statement.
Pick out the wrong statement.
__________ the exhaust gas is an indication of the incomplete combustion of fuel.
__________ the exhaust gas is an indication of the incomplete combustion of fuel.
Specific gravity of hot metal (pig iron) is __________ times that of the blast furnace slag.
Specific gravity of hot metal (pig iron) is __________ times that of the blast furnace slag.
The hardness of the lathe bed material is measured by the
The hardness of the lathe bed material is measured by the
__________ cycle is the most efficient thermodynamic cycle.
__________ cycle is the most efficient thermodynamic cycle.
Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of
Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of
Saturated steam at a pressure of 25 kg/cm² is throttled to attain 5 kg/cm² . Then the outcoming steam will be
Saturated steam at a pressure of 25 kg/cm² is throttled to attain 5 kg/cm² . Then the outcoming steam will be
Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part?
Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part?
Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be in the case of
Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be in the case of
Fibre reinforced plastic (FRP) are
Fibre reinforced plastic (FRP) are
Which of the following gases cause global warming?
Which of the following gases cause global warming?
Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs?
Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs?
Floating control action
Floating control action
The surface tension of a liquid, at critical temperature is
The surface tension of a liquid, at critical temperature is
The type of pump used for lifting large quantity of sewage is a __________ pump.
The type of pump used for lifting large quantity of sewage is a __________ pump.
Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be
Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be
The only suitable method for hardening the low carbon steel is case hardening. Which of the following is a case hardening process?
The only suitable method for hardening the low carbon steel is case hardening. Which of the following is a case hardening process?
Heat required to raise the temperature of a body by 1 °C is called its
Heat required to raise the temperature of a body by 1 °C is called its
Multistage compression of air as compared to single stage compression offers the advantage of
Multistage compression of air as compared to single stage compression offers the advantage of
Satellites burn off during re-entry to earth's atmosphere, because of the
Satellites burn off during re-entry to earth's atmosphere, because of the
Knocking tendency in a petrol engine decreases with increasing
Knocking tendency in a petrol engine decreases with increasing
'Amortization' in respect of financial obligation of a company means the
'Amortization' in respect of financial obligation of a company means the
Glass reacts with
Glass reacts with
Ceramic tips for the cutting tool are prepared from __________ powder.
Ceramic tips for the cutting tool are prepared from __________ powder.
Which of the following is an inedible oil ?
Which of the following is an inedible oil ?
In continuous casting of liquid steel, the mould is made of
In continuous casting of liquid steel, the mould is made of
The order of a chemical reaction
The order of a chemical reaction
'End cooler' or 'after cooler' is employed in air compressor mainly to
'End cooler' or 'after cooler' is employed in air compressor mainly to
As the fluid flow rate increases, the float of the rotameter
As the fluid flow rate increases, the float of the rotameter
If the demand for an item is trebled and the order cost is reduced to one third, then the economic order quantity
If the demand for an item is trebled and the order cost is reduced to one third, then the economic order quantity
Value of a material is usually considered as a relationship between
Value of a material is usually considered as a relationship between
The refrigerant freon-12 is chemically
The refrigerant freon-12 is chemically
Age hardening is connected with
Age hardening is connected with
Material of construction of surveying metallic tapes is __________ which has low coefficient of expansion & enough strength.
Material of construction of surveying metallic tapes is __________ which has low coefficient of expansion & enough strength.
The pH value is the measure of hydrogen ion concentration in a solution. The term pH stands for the __________ in the solution.
The pH value is the measure of hydrogen ion concentration in a solution. The term pH stands for the __________ in the solution.
Addition of __________ to steel can not impart it high strength at elevated temperature.
Addition of __________ to steel can not impart it high strength at elevated temperature.
Dislocation cross-slip is difficult in those materials, which have
Dislocation cross-slip is difficult in those materials, which have
Which of the following is not an ore of aluminium?
Which of the following is not an ore of aluminium?
The hydraulic radius of a circular pipe of diameter 'd' flowing full is
The hydraulic radius of a circular pipe of diameter 'd' flowing full is
Water hammer in pipelines results, when the flowing fluid
Water hammer in pipelines results, when the flowing fluid
Heat release during phase change is observed in case of a/an
Heat release during phase change is observed in case of a/an
Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.
Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.
Yield strength of a polycrystalline metal with an average grain size, d, is proportional to
Yield strength of a polycrystalline metal with an average grain size, d, is proportional to
When a copper ball is heated, the largest percentage increase will be in its
When a copper ball is heated, the largest percentage increase will be in its
The most suitable material for a sewer for carrying storm water is
The most suitable material for a sewer for carrying storm water is
Which of the following is an undesirable property of slag produced during the pyrometallurgical method of metal extraction from its ore?
Which of the following is an undesirable property of slag produced during the pyrometallurgical method of metal extraction from its ore?
Commonly employed coolant for high pressure turbogenerator is
Commonly employed coolant for high pressure turbogenerator is
The speed of sound will be maximum in
The speed of sound will be maximum in
Ceramic tips for the cutting tool are prepared from __________ powder.
Ceramic tips for the cutting tool are prepared from __________ powder.
A high pressure boiler generates steam at a pressure greater than __________ kg/cm² .
A high pressure boiler generates steam at a pressure greater than __________ kg/cm² .
The burnout heat flux in the nucleate boiling regime is not a function of the
The burnout heat flux in the nucleate boiling regime is not a function of the
Steel balls are manufactured by cold heading. After cold forming, they are subjected to
Steel balls are manufactured by cold heading. After cold forming, they are subjected to
Which of the following is capable of acting both as an acid flux as well as a basic flux in the metal extraction from its ore?
Which of the following is capable of acting both as an acid flux as well as a basic flux in the metal extraction from its ore?
Which of the following alloying elements is present in maximum percentage in high speed steel.
Which of the following alloying elements is present in maximum percentage in high speed steel.
In case of water (Prandtl number ≈ 6) flowing over a flat plate heated over the entire length, the thermal boundary layer thickness as compared to hydrodynamic boundary layer thickness is
In case of water (Prandtl number ≈ 6) flowing over a flat plate heated over the entire length, the thermal boundary layer thickness as compared to hydrodynamic boundary layer thickness is
Stresses encountered in the metal forming processes are less than the __________ of the material.
Stresses encountered in the metal forming processes are less than the __________ of the material.
Energy to be supplied to the radioactive nucleus for the emission of a neutron is __________ MeV.
Energy to be supplied to the radioactive nucleus for the emission of a neutron is __________ MeV.
The malleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the maximum malleability ?
The malleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the maximum malleability ?
A metalloid possesses the characteristics of both the metals and non-metals. Which of the following is not a metalloid?
A metalloid possesses the characteristics of both the metals and non-metals. Which of the following is not a metalloid?
Tesla metre per ampere (T. m/A) is the unit for the measurement of
Tesla metre per ampere (T. m/A) is the unit for the measurement of
Presence of sulphur in the fuel fired in a furnace
Presence of sulphur in the fuel fired in a furnace
A thin, flat & square plate measuring 2 m x 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m ². The plate temperature will remain constant at 30°C, if the convective heat transfer co-efficient is __________ W/m² °C.
A thin, flat & square plate measuring 2 m x 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m ². The plate temperature will remain constant at 30°C, if the convective heat transfer co-efficient is __________ W/m² °C.
The most abundant metal present in the earth's crust is;
The most abundant metal present in the earth's crust is;
Hydrocyclone is a
Hydrocyclone is a
The dew point of moist air becomes __________ with decrease in its relative humidity.
The dew point of moist air becomes __________ with decrease in its relative humidity.
__________ is the trade name assigned to a non-ferrous cast alloy composed of cobalt, chromium & tungsten.
__________ is the trade name assigned to a non-ferrous cast alloy composed of cobalt, chromium & tungsten.
Which of the following is termed as the boiler mounting ?
Which of the following is termed as the boiler mounting ?
The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.
The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.
The activity co-efficient of the solute in a dilute solution
The activity co-efficient of the solute in a dilute solution
In spite of large heat transfer co-efficients in boiling liquids, fins are used advantageously, where the entire surface is exposed to __________ boiling.
In spite of large heat transfer co-efficients in boiling liquids, fins are used advantageously, where the entire surface is exposed to __________ boiling.
Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs.
Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs.
Young's modulus of elasticity of a material is the slope of the initial linear portion of the stress-strain curve. It decreases ap-preciablyby
Young's modulus of elasticity of a material is the slope of the initial linear portion of the stress-strain curve. It decreases ap-preciablyby
Which of the following is the most suitable for removing fine particles (< 1 micron diameter) from air below its dew point?
Which of the following is the most suitable for removing fine particles (< 1 micron diameter) from air below its dew point?
Styrofoam is the commercial name of
Styrofoam is the commercial name of
Function of gear box is to
Function of gear box is to
For dynamic strain measurement, the wheatstone bridge used is of __________ type.
For dynamic strain measurement, the wheatstone bridge used is of __________ type.
