A process of very slow regulated cooling is known as (a) Quenching (b) Sedimentation (c) Annealing (d) Diffusion

A process of very slow regulated cooling is known as (a) Quenching (b) Sedimentation (c) Annealing (d) Diffusion
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Three solid objects of the same material and of equal mass-a sphere, a cylinder (length = diameter) and a cube are at 500°C initially. These are dropped in a quenching bath containing a large volume of cooling oil each attaining the bath temperature eventually. The time required for 90% change in temperature is the smallest for (A) Cube (B) Cylinder (C) Sphere (D) Equal for all the three

Description : Three solid objects of the same material and of equal mass-a sphere, a cylinder (length = diameter) and a cube are at 500°C initially. These are dropped in a quenching bath containing a large volume of cooling oil ... (A) Cube (B) Cylinder (C) Sphere (D) Equal for all the three

Last Answer : (A) Cube

The cooling medium used in dry quenching of coke is (A) Nitrogen (B) Air (C) Phenolic water (D) Carbon dioxide

Description : The cooling medium used in dry quenching of coke is (A) Nitrogen (B) Air (C) Phenolic water (D) Carbon dioxide

Last Answer : (A) Nitrogen

Phenolic water generated in coke ovens & by-product plant of a steel plant are disposed off by (A) Quenching of hot coke (B) Discharging in the river stream (C) Filtration and recycling for cooling coke oven gas (D) None of these

Description : Phenolic water generated in coke ovens & by-product plant of a steel plant are disposed off by (A) Quenching of hot coke (B) Discharging in the river stream (C) Filtration and recycling for cooling coke oven gas (D) None of these

Last Answer : (A) Quenching of hot coke

The process through which excess of light energy is dissipated in photosynthesis is known as (1) Quenching (2) Scavenging (3) Photolysis (4) Photophosphatylation

Description : The process through which excess of light energy is dissipated in photosynthesis is known as (1) Quenching (2) Scavenging (3) Photolysis (4) Photophosphatylation

Last Answer : (1) Quenching Explanation: Quenching is a process in which absorbed light energy is dissipated as heat and does not take part in photochemistry. The phenomenon involves quenching of chlorophyll a (Chia) fluorescence, which is induced under steady-state illumination.

The process through which excess of light energy is dissipated in photosynthesis is known as (1) Quenching (2) Scavenging (3) Photolysis (4) Photophosphorylation

Description : The process through which excess of light energy is dissipated in photosynthesis is known as (1) Quenching (2) Scavenging (3) Photolysis (4) Photophosphorylation

Last Answer : Quenching

What is meant by simulated annealing in artificial intelligence? a) Returns an optimal solution when there is a proper cooling schedule b) Returns an optimal solution when there is no proper cooling schedule c) It will not return an optimal solution when there is a proper cooling schedule d) None of the mentioned

Description : What is meant by simulated annealing in artificial intelligence? a) Returns an optimal solution when there is a proper cooling schedule b) Returns an optimal solution when there is no proper cooling ... not return an optimal solution when there is a proper cooling schedule d) None of the mentioned

Last Answer : a) Returns an optimal solution when there is a proper cooling schedule

Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called (A) Tempering (B) Hardening (C) Annealing (D) Normalising

Description : Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called (A) Tempering (B) Hardening (C) Annealing (D) Normalising

Last Answer : Option C

Pick out the true statement pertaining to water treatment. (A) Slow sand filters can remove colour completely (B) Activated carbon can be used for taste & odour control without subsequent filtration (C) Application of activated carbon reduces the temporary hardness of water (D) Normally, the turbidity is removed by adding a coagulant prior to sedimentation

Description : Pick out the true statement pertaining to water treatment. (A) Slow sand filters can remove colour completely (B) Activated carbon can be used for taste & odour control without subsequent filtration ... of water (D) Normally, the turbidity is removed by adding a coagulant prior to sedimentation

Last Answer : (D) Normally, the turbidity is removed by adding a coagulant prior to sedimentation

Rapid sand filter (A) Should be preceded by coagulation and sedimentation (B) Uses rapid sand as filter media(C) Is used after slow sand filtering has been done (D) Can combine disinfection also

Description : Rapid sand filter (A) Should be preceded by coagulation and sedimentation (B) Uses rapid sand as filter media (C) Is used after slow sand filtering has been done (D) Can combine disinfection also

Last Answer : (A) Should be preceded by coagulation and sedimentation

Distribution of wash water is provided in (A) Sedimentation tank (B) Slow sand filter (C) Rapid gravity filter (D) All the above

Description : Distribution of wash water is provided in  (A) Sedimentation tank  (B) Slow sand filter  (C) Rapid gravity filter  (D) All the above 

Last Answer : (C) Rapid gravity filter

In multi stage compressor, the isothermal compression is achieved by A. Employing intercooler B. By constantly cooling the cylinder C. By running compressor at very slow speed D. By insulating the cylinder

Description : In multi stage compressor, the isothermal compression is achieved by A. Employing intercooler B. By constantly cooling the cylinder C. By running compressor at very slow speed D. By insulating the cylinder

Last Answer : ANSWER : C

Very fine suspended and colloidal impurities are removed from water by a process called (A) Sedimentation (B) Coagulation (C) Disinfection (D) Softening

Description : Very fine suspended and colloidal impurities are removed from water by a process called (A) Sedimentation (B) Coagulation (C) Disinfection (D) Softening

Last Answer : (B) Coagulation

Rewrite : What thirst quenching,lip smacking,delicious non alcoholic drinks would you recommend for a party of teetotalers?

Description : Rewrite : What thirst quenching,lip smacking,delicious non alcoholic drinks would you recommend for a party of teetotalers?

Last Answer : Coke Zero. Tastes great, and there’s no guilt involved.

What is quenching heat or quenching enthalpy ?:?

Description : What is quenching heat or quenching enthalpy ?:?

Last Answer : amount of heat generated during the formation of 1 mol of water by diluting 1 mol H + of a given acid at a temperature of 25 ° C is called quenching heat or quenching enthalpy . The value of the propagation heat of all strong acids and strong bases is equal to - 57.34 kj .

What are the demerits of using oil as an arc quenching medium?

Description : What are the demerits of using oil as an arc quenching medium?

Last Answer : • The air has relatively inferior arc quenching properties • The air blast circuit breakers are very sensitive to variations in the rate of rise of restriking voltage • Maintenance is required for the compression plant which supplies the air blast

What are the hazards imposed by oil when it is used as an arc quenching medium?

Description : What are the hazards imposed by oil when it is used as an arc quenching medium?

Last Answer : There is a risk of fire since it is inflammable. It may form an explosive mixture with arc. So oil is preferred as an arc quenching medium.

What are the advantages of oil as arc quenching medium?

Description : What are the advantages of oil as arc quenching medium?

Last Answer : • It absorbs the arc energy to decompose the oil into gases, which have excellent cooling properties • It acts as an insulator and permits smaller clearance between line conductors and earthed components

How Arc quenching is done?

Description : How Arc quenching is done?

Last Answer : When fault occurs depending on design element melts at one point and arc starts and a transient current is super imposed on prospective current. When the sum of two is zeroing the arc is quenching. 

Fuel consumption in coke making can be reduced by (A) Preheating, blending and de-ashing the coal (B) Stamped charging of coal (C) Dry quenching of coke (D) All (A), (B) and (C)

Description : Fuel consumption in coke making can be reduced by (A) Preheating, blending and de-ashing the coal (B) Stamped charging of coal (C) Dry quenching of coke (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Pick out the wrong statement. (A) Tin can be readily and very easily drawn into very fine wire (B) Tin can be severely cold worked without the necessity of annealing due to its low recrystallisation temperature (C) Tin exists in two allotropic forms

Description : Pick out the wrong statement. (A) Tin can be readily and very easily drawn into very fine wire (B) Tin can be severely cold worked without the necessity of annealing due to its low recrystallisation temperature (C) Tin exists in two allotropic forms

Last Answer : (A) Tin can be readily and very easily drawn into very fine wire

The process of removing calcium and magnesium from hard water is known as – (1) Sedimentation (2) Filtration (3) Flocculation (4) Water softening

Description : The process of removing calcium and magnesium from hard water is known as – (1) Sedimentation (2) Filtration (3) Flocculation (4) Water softening

Last Answer : (4) Water softening Explanation: Water softening is the reduction of the concentration of calcium, magnesium, and certain other metal cations in hard water. Hardness ions dissolved in water can cause a ... use depend on an ion-exchange resin in which hardness ions are exchanged for sodium ions.

The process of removing calcium and magnesium from hard water is known as (1) Sedimentation (2) Filtration (3) Flocculation (4) Water softening

Description : The process of removing calcium and magnesium from hard water is known as (1) Sedimentation (2) Filtration (3) Flocculation (4) Water softening

Last Answer :  Water softening

With view to Nitrous Oxide what is the major pharmacological problem? A. Contraindicated in pregnancy B. Contra indicated in cardiac dysrhythmias C. Diffusion hypoxia at the end of the case due to slow solubility of the agent in blood

Description : With view to Nitrous Oxide what is the major pharmacological problem? A. Contraindicated in pregnancy B. Contra indicated in cardiac dysrhythmias C. Diffusion hypoxia at the end of the case due to slow solubility of the agent in blood

Last Answer : C. Diffusion hypoxia at the end of the case due to slow solubility of the agent in blood

In order to prevent the corrosion of iron pipes, they are often coated with a layer of zinc. This process is termed as (a) electroplating (b) annealing (c) galvanization (d) vulcanization

Description : In order to prevent the corrosion of iron pipes, they are often coated with a layer of zinc. This process is termed as (a) electroplating (b) annealing (c) galvanization (d) vulcanization

Last Answer : Ans:(c)

In order to prevent the corrosion of iron pipes they are often coated with a layer of zinc. This process is termed as------? A. Electroplating B. Annealing C. Galvanization (Answer) D. Vulcanization

Description : In order to prevent the corrosion of iron pipes they are often coated with a layer of zinc. This process is termed as------? A. Electroplating B. Annealing C. Galvanization (Answer) D. Vulcanization

Last Answer : C. Galvanization (Answer)

Sizing of very fine particles of the order of 5 to 10 microns is done by elutriation, which is a __________ operation. (A) Clarification(B) Sedimentation(C) Flocculation(D) Classification

Description : Sizing of very fine particles of the order of 5 to 10 microns is done by elutriation, which is a __________ operation. (A) Clarification (B) Sedimentation (C) Flocculation (D) Classification

Last Answer : (D) Classification

Which of the following is the most efficient for removal of very finely divided suspended solids and colloidal matter from the polluted waterstream?(A) Sedimentation tank(B) Circular clarifier(C) Mechanical flocculation(D) Chemical coagulation

Description : Which of the following is the most efficient for removal of very finely divided suspended solids and colloidal matter from the polluted waterstream? (A) Sedimentation tank (B) Circular clarifier (C) Mechanical flocculation (D) Chemical coagulation

Last Answer : (D) Chemical coagulation

To remove very fine suspended particles from water, the method adopted is (A) Screening (B) Sedimentation (C) Boiling (D) Filtration

Description : To remove very fine suspended particles from water, the method adopted is  (A) Screening  (B) Sedimentation  (C) Boiling  (D) Filtration

Last Answer : To remove very fine suspended particles from water, the method adopted is  (A) Screening  (B) Sedimentation  (C) Boiling  (D) Filtration

Annealing process is

Description : Annealing process is

Last Answer : Annealing process is A. heating the steel bright red and then cooling suddenly B. heating the steel ... charcol D. heating the rods of iron in ammonia

In order to prevent the corrosion of iron pipes they are often coated with a layer of zinc. This process is termed as: A. Electroplating B. Annealing C. Galvanization D. Vulcanization

Description : In order to prevent the corrosion of iron pipes they are often coated with a layer of zinc. This process is termed as: A. Electroplating B. Annealing C. Galvanization D. Vulcanization

Last Answer : ANSWER: C

The heat treatment process applied to cold formed steel parts is (A) Normalising (B) Tempering (C) Artificial ageing (D) Solution annealing

Description : The heat treatment process applied to cold formed steel parts is (A) Normalising (B) Tempering (C) Artificial ageing (D) Solution annealing

Last Answer : (D) Solution annealing

The heat treatment process to which castings and the steel balls produced by cold heading are subjected is (A) Tempering (B) Normalising (C) Annealing (D) None of these

Description : The heat treatment process to which castings and the steel balls produced by cold heading are subjected is (A) Tempering (B) Normalising (C) Annealing (D) None of these

Last Answer : (B) Normalising

__________ is not a case hardening process.(A) Carburising (B) Nitriding (C) Cyaniding (D) Annealing

Description : __________ is not a case hardening process. (A) Carburising (B) Nitriding (C) Cyaniding (D) Annealing

Last Answer : (D) Annealing

Nitriding of steel is a process for (A) Case hardening (B) Spheroidising (C) Normalising (D) Annealing

Description : Nitriding of steel is a process for (A) Case hardening (B) Spheroidising (C) Normalising (D) Annealing

Last Answer : (A) Case hardening

Which of the following processes is absent in glass manufacturing process? (A) Sintering (B) Annealing (C) Shaping or forming (D) Melting

Description : Which of the following processes is absent in glass manufacturing process? (A) Sintering (B) Annealing (C) Shaping or forming (D) Melting

Last Answer : (A) Sintering

Globular form of cementite is formed during the __________ process. (A) Spheroidising (B) Hardening (C) Annealing (D) Normalising

Description : Globular form of cementite is formed during the __________ process. (A) Spheroidising (B) Hardening (C) Annealing (D) Normalising

Last Answer : (B) Hardening

Spheroidising of a material is a/an __________ process. (A) Normalising (B) Annealing (C) Tempering (D) Hardening

Description : Spheroidising of a material is a/an __________ process. (A) Normalising (B) Annealing (C) Tempering (D) Hardening

Last Answer : (B) Annealing

Describe full annealing process with its significance.

Description : Describe full annealing process with its significance.

Last Answer : Full annealing Process: In full annealing process the steel workpiece is heated to about 30 to 500 above the critical temperature AC3, is held there until the temperature of the workpiece is ... structure, soften the metal and relieves the internal stresses previously set up in the metal.

Distinguish between annealing and normalizing process.

Description : Distinguish between annealing and normalizing process.

Last Answer : Annealing Normalizing Less hardness, toughness  Slightly more hardness, toughness.  For plain carbon steel the microstructure shows pearlite  Microstructure shows more pearlite.  ... less uniform. Internal stresses are least.  Internal stresses are slightly more 

__________ of grey cast iron produces white cast iron. (A) Tempering (B) Rapid heating (C) Rapid cooling (D) Slow cooling

Description : __________ of grey cast iron produces white cast iron. (A) Tempering (B) Rapid heating (C) Rapid cooling (D) Slow cooling

Last Answer : Option B

Which of the following is true about the way by which SDG&E has been regulated by the PUC? a. SDG&E has been allowed to earn very high economic profits b. The profits of SDG&E are calculated as a percent of the value of the capital goods c. When the demand for electricity would fall, the price of electricity would also fall d. All of the above

Description : Which of the following is true about the way by which SDG&E has been regulated by the PUC? a. SDG&E has been allowed to earn very high economic profits b. The profits of SDG&E are calculated as ... the demand for electricity would fall, the price of electricity would also fall d. All of the above

Last Answer : b. The profits of SDG&E are calculated as a percent of the value of the capital goods

Camphor can easily be purified by the process of (a) Sublimation (b) Distillation (c) Crystallisation (d) Sedimentation

Description : Camphor can easily be purified by the process of (a) Sublimation (b) Distillation (c) Crystallisation (d) Sedimentation

Last Answer : Ans:(a)

Gravity settling process is not involved in the working of a (A) Hydrocyclone (B) Classifier (C) Dorr-thickener (D) Sedimentation tank

Description : Gravity settling process is not involved in the working of a (A) Hydrocyclone (B) Classifier (C) Dorr-thickener (D) Sedimentation tank

Last Answer : (A) Hydrocyclone

If a force greater than that of gravity is used to separate solids & fluidsof different densities, the process is termed as the(A) Sedimentation(B) Flocculation(C) Dispersion(D) Centrifugation

Description : If a force greater than that of gravity is used to separate solids & fluidsof different densities, the process is termed as the (A) Sedimentation (B) Flocculation (C) Dispersion (D) Centrifugation

Last Answer : (D) Centrifugation

The process by which fine solids is removed from liquids is termed as (A) Decantation (B) Flocculation (C) Sedimentation (D) Classification

Description : The process by which fine solids is removed from liquids is termed as (A) Decantation (B) Flocculation (C) Sedimentation (D) Classification

Last Answer : (C) Sedimentation

The process opposite to 'dispersion' is termed as the(A) Flocculation(B) Sedimentation(C) Filtration(D) None of these

Description : The process opposite to 'dispersion' is termed as the (A) Flocculation (B) Sedimentation (C) Filtration (D) None of these

Last Answer : (A) Flocculation

Separation of solid suspended in liquid into a supernatant clear liquid and a denser slurry employs a process termed as the (A) Coagulation (B) Flocculation (C) Sedimentation (D) Clarification

Description : Separation of solid suspended in liquid into a supernatant clear liquid and a denser slurry employs a process termed as the (A) Coagulation (B) Flocculation (C) Sedimentation (D) Clarification

Last Answer : (C) Sedimentation

The process of judicious removal of parts like leaf, flower, fruits etc. to obtain good and qualitative yield is called? a. Training b. Pruning c. Fustigation d. Sedimentation e. None of these

Description : The process of judicious removal of parts like leaf, flower, fruits etc. to obtain good and qualitative yield is called? a. Training b. Pruning c. Fustigation d. Sedimentation e. None of these

Last Answer : b. Pruning

In water treatment, alum [Al2 (SO4 )3 ] is used for the process of (A) Filtration (B) Coagulation (C) Sedimentation (D) Disinfection

Description : In water treatment, alum [Al2 (SO4 )3 ] is used for the process of (A) Filtration (B) Coagulation (C) Sedimentation (D) Disinfection

Last Answer : (B) Coagulation