Function of fusible plug in a boiler is to
Function of fusible plug in a boiler is to
The main constituent of bones is
The main constituent of bones is
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.
Which of the following is not an ore of aluminium?
Which of the following is not an ore of aluminium?
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.
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) ?
The order of a chemical reaction
The order of a chemical reaction
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.
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 ).
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
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
Broaching tools are usually made of
Broaching tools are usually made of
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
In continuous casting of liquid steel, the mould is made of
In continuous casting of liquid steel, the mould is made of
Gross & Net calorific values will be the same for
Gross & Net calorific values will be the same for
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
Thermal conductivity of a material does not depend upon its
Thermal conductivity of a material does not depend upon 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
Ceramic tips for the cutting tool are prepared from __________ powder.
Ceramic tips for the cutting tool are prepared from __________ powder.
Out of the following, the rays having the lowest wavelength is the
Out of the following, the rays having the lowest wavelength is the
Reduction in the grain size reduces the __________ of the material.
Reduction in the grain size reduces the __________ of the material.
Flywheel is provided in a machine to
Flywheel is provided in a machine to
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 ?
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.
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 dissipation in cooling towers is mainly by
Heat dissipation in cooling towers is mainly by
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.
Increasing the temperature of a material makes it
Increasing the temperature of a material makes it
Matte smelting is used in the extraction of
Matte smelting is used in the extraction of
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 ?
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.
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?
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
Styrofoam is the commercial name of
Styrofoam is the commercial name of
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 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
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
If Reynolds number is greater than 1, then the
If Reynolds number is greater than 1, then the
Floating control action
Floating control action
Silicon percentage in silicon steel used for electrical equipments is about
Silicon percentage in silicon steel used for electrical equipments is about
Which of the following is an inedible oil ?
Which of the following is an inedible oil ?
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?
Hot & cold working of material causes its __________ deformation.
Hot & cold working of material causes its __________ deformation.
'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
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
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
The tensile load-elongation curve of a metal does not describe
The tensile load-elongation curve of a metal does not describe
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
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.
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?
Tin based white metals are used, where bearings are subjected to
Tin based white metals are used, where bearings are subjected to
Commonly employed coolant for high pressure turbogenerator is
Commonly employed coolant for high pressure turbogenerator is
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 main charge in blast furnace is usually
The main charge in blast furnace is usually
Encyclopaedia of Chemical Technology has been
Encyclopaedia of Chemical Technology has been
Fog is an example of colloidal system of
Fog is an example of colloidal system of
The refrigerant freon-12 is chemically
The refrigerant freon-12 is chemically
The atmospheric temperature during melting of ice/snow (in the atmosphere)
The atmospheric temperature during melting of ice/snow (in the atmosphere)
Air intake for an air compressor should be preferably taken from
Air intake for an air compressor should be preferably taken from
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.
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?
Volute casing of a centrifugal pump does not facilitate
Volute casing of a centrifugal pump does not facilitate
The hardness of the lathe bed material is measured by the
The hardness of the lathe bed material is measured by the
A material expanding freely due to heating will develop __________ stress.
A material expanding freely due to heating will develop __________ stress.
Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.
Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.
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.
Sheardising process is used for
Sheardising process is used for
Boiler rating is normally done in terms of
Boiler rating is normally done in terms of
The primary strengthening mechanism in 70 : 30 brass is the
The primary strengthening mechanism in 70 : 30 brass is the
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.
The underground well of a biogas plant is called the
The underground well of a biogas plant is called the
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
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 categorised as the ore agglomeration process?
Which of the following is not categorised as the ore agglomeration process?
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.
Two stroke engine compared to a four stroke engine has
Two stroke engine compared to a four stroke engine has
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
Out of the following, the __________ pipe has the least corrosion resistance.
Out of the following, the __________ pipe has the least corrosion resistance.
Reduction reaction involves the
Reduction reaction involves the
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?
__________ the exhaust gas is an indication of the incomplete combustion of fuel.
__________ the exhaust gas is an indication of the incomplete combustion of fuel.
Function of gear box is to
Function of gear box is to
Pick out the correct statement.
Pick out the correct statement.
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.
The conventional mechnical transducer, which converts pressure signal to displacement signal is
The conventional mechnical transducer, which converts pressure signal to displacement signal is
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
Identify the false statement
Identify the false statement
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.
Window panes of aeroplanes are normally made of
Window panes of aeroplanes are normally made of
Electrolytes conduct electric current by
Electrolytes conduct electric current by
Electrochemical corrosion occurs
Electrochemical corrosion occurs
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.
The lightest non-inflammable gas is
The lightest non-inflammable gas is
Fatigue life is expected to increase by
Fatigue life is expected to increase by
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.
Glass reacts with
Glass reacts with
In chemical dehumidification of air
In chemical dehumidification of air
Viscoelastic behaviour is observed in __________ materials.
Viscoelastic behaviour is observed in __________ materials.
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.
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
__________ has a negative co-efficient of linear expansion.
__________ has a negative co-efficient of linear expansion.
Ammonia leakage in the refrigeration system is detected by
Ammonia leakage in the refrigeration system is detected by
'End cooler' or 'after cooler' is employed in air compressor mainly to
'End cooler' or 'after cooler' is employed in air compressor mainly to
Material having negative co-efficient of linear expansion is
Material having negative co-efficient of linear expansion is
In a good rimming steel
In a good rimming steel
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 ?
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
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.
Joining of thin foils is preferred to be done by
Joining of thin foils is preferred to be done by
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?
The most abundant metal present in the earth's crust is;
The most abundant metal present in the earth's crust is;
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?
The surface tension of a liquid, at critical temperature is
The surface tension of a liquid, at critical temperature is
'Ice point' is designated on Farenhite temperature scale by
'Ice point' is designated on Farenhite temperature scale by
Softening of hardned steel is done by its
Softening of hardned steel is done by its
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
Heat release during phase change is observed in case of a/an
Heat release during phase change is observed in case of a/an
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.
__________ is a special constituent of chlorophyll without which photosynthesis is not possible.
__________ is a special constituent of chlorophyll without which photosynthesis is not possible.
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?
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 ?
Lead percentage in pure galena is about
Lead percentage in pure galena is about
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
Which of the following gases cause global warming?
Which of the following gases cause global warming?
Knocking tendency in a petrol engine decreases with increasing
Knocking tendency in a petrol engine decreases with increasing
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?
The speed of sound will be maximum in
The speed of sound will be maximum in
__________ 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.
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
Addition of silicon to aluminium improves its
Addition of silicon to aluminium improves its
Age hardening is connected with
Age hardening is connected with
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)?
As the fluid flow rate increases, the float of the rotameter
As the fluid flow rate increases, the float of the rotameter
__________ addition increases the depth of hardness of steel.
__________ addition increases the depth of hardness of steel.
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
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
Superheating of steam is done at constant
Superheating of steam is done at constant
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
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?
Nitriding of a steel part does not increase its
Nitriding of a steel part does not increase its
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?
The starting of a car takes time in winter, because the
The starting of a car takes time in winter, because the
Hydrocyclone is a
Hydrocyclone is a
In a neutral solution
In a neutral solution
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?
Malleabilisation heat treatment is performed on
Malleabilisation heat treatment is performed on
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.
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.
Liquid nitrogen containers can be made from
Liquid nitrogen containers can be made from
__________ furnace is generally used in the non-ferrous foundaries.
__________ furnace is generally used in the non-ferrous foundaries.
Presence of sulphur in the fuel fired in a furnace
Presence of sulphur in the fuel fired in a furnace
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.
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
Pick out the correct statement.
Pick out the correct statement.
Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity)
Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity)
In an isochoric process,
In an isochoric process,
The most suitable material for a sewer for carrying storm water is
The most suitable material for a sewer for carrying storm water 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
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
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.
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?
The cost of providing service in a queing system decreases with the
The cost of providing service in a queing system decreases with the
Steel is welded using the __________ flame.
Steel is welded using the __________ flame.
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
Hydrogen can be
Hydrogen can be
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).
Fibre reinforced plastic (FRP) are
Fibre reinforced plastic (FRP) are
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
__________ 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.
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.
The rolling process can not be used to produce
The rolling process can not be used to produce
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
Which of the following is termed as the boiler mounting ?
Which of the following is termed as the boiler mounting ?
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
Which of the following is termed as the boiler mounting ?
Which of the following is termed as the boiler mounting ?
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
In inventory control theory, the economic order quantity (EOQ) is the
In inventory control theory, the economic order quantity (EOQ) is the
__________ cycle is the most efficient thermodynamic cycle.
__________ cycle is the most efficient thermodynamic cycle.
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.
Gas carrying pipelines are best joined by
Gas carrying pipelines are best joined 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.
Dialysis is the process of separating substances in the
Dialysis is the process of separating substances in the
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.
Value of a material is usually considered as a relationship between
Value of a material is usually considered as a relationship between
Which of the following does not lower the surface tension of liquids ?
Which of the following does not lower the surface tension of liquids ?
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
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.
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 life of a ball bearing is inversely proportional to
The life of a ball bearing is inversely proportional to
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?
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
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 ?
For dynamic strain measurement, the wheatstone bridge used is of __________ type.
For dynamic strain measurement, the wheatstone bridge used is of __________ type.
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
Galvanic corrosion
Galvanic corrosion
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.
Ceramic tips for the cutting tool are prepared from __________ powder.
Ceramic tips for the cutting tool are prepared from __________ powder.
The activity co-efficient of the solute in a dilute solution
The activity co-efficient of the solute in a dilute solution
__________ of austenite decreases the hardenability in steel.
__________ of austenite decreases the hardenability in steel.
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.
Thermal expansion of solid is employed in the temperature measurement by a
Thermal expansion of solid is employed in the temperature measurement by a
Presence of sulphur in steel reduces the
Presence of sulphur in steel reduces the
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
Safety matches is produced using
Safety matches is produced using
A fine grained grinding wheel should not be used for grinding __________ materials.
A fine grained grinding wheel should not be used for grinding __________ materials.
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.
Pick out the wrong statement.
Pick out the wrong statement.
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.
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
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?
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
Faraday's law of electrolysis is related to the
Faraday's law of electrolysis is related to the
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 ?
'Amortization' in respect of financial obligation of a company means the
'Amortization' in respect of financial obligation of a company means the
Stellite is a trade name for the
Stellite is a trade name for the
Which of the following exemplifies resemblence with the extrusion process ?
Which of the following exemplifies resemblence with the extrusion process ?
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.
Pick out the wrong statement.
Pick out the wrong statement.
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
Fine grained steels have
Fine grained steels have
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.
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
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
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
Cathodic protection is widely used in controlling corrosion in
Cathodic protection is widely used in controlling corrosion in
Pick out the correct statement.
Pick out the correct statement.
Which of the following is not an ore of aluminium?
Which of the following is not an ore of aluminium?
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.
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
Galena is an ore of
Galena is an ore of
