Description : Make up water is required in a cooling tower to replace the water lost by (A) Evaporation (B) Drift (C) Blowdown and leakage (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Drift in a cooling tower is (A) The water entrained by the circulating air (B) Dependent on the water lost by evaporation (C) Desirable (D) All (A), (B) & (C)
Last Answer : (A) The water entrained by the circulating air
Description : . Herbicide spray drift can be reduced by a). Increasing the droplet size b). Forming a foam c). Making invert emulsion d). All of these
Last Answer : d). All of these
Description : is the application of sprayer. a) To break the liquid droplet of effective size b) To distribute them uniformly event plants c) To regulate amount of liquid to avoid excessive application. d) All above them
Last Answer : All above them
Description : Which one of the following RP technologies uses solid sheet stock as the starting material? a.Droplet deposition manufacturing b.Fused-deposition modeling c.Laminated-Object Manufacturing d.Selective Laser Sintering
Last Answer : c.Laminated-Object Manufacturing
Description : Which of the following RP technologies uses powders as the starting material? a.Droplet Deposition Manufacturing b.Fused-Deposition Modeling c.Selective Laser Sintering d.Stereolithography
Last Answer : c.Selective Laser Sintering
Description : In the context of rapid prototyping and additive manufacturing, tessellation refers to theprocess of slicing the CAD model of the part into layers. a.Droplet Deposition Manufacturing b.Used-Deposition Modeling c.Laminated-Object Manufacturing d.Stereolithography
Last Answer : d.Stereolithography
Description : Ultra low volume sprayer consist of high spinning disc which makes droplet size a. 50 -100mm. b 40-100mm. c.35-100mm. d. None of above
Last Answer : Ans- c. 35-100mm.
Description : The changing of solid directly to vapor without passing through liquid state is called a. Evaporation b. Vaporization c. Sublimation d. Condensation
Last Answer : Sublimation
Description : ______________ is the temperature at which liquids start to boil or the temperature at which vapors begin to condense. a. Saturation Temperature b. Sub cooled Liquid c. Compressed Liquid d. Saturated Liquid
Last Answer : Saturation Temperature
Description : The pressure outside a bubble/droplet of liquid is __________ the internal pressure. (A) Greater than (B) Less than (C) Equal to (D) Unpredictable; depends on the bubble size
Last Answer : Option B
Description : swirl plate in the cone nozzle is provided to. a. Impart rotational motion to the liquid passing through it. b. To increase the droplet size. c. To decrease the droplet size. d. To increase the spray angle.
Last Answer : a. Impart rotational motion to the liquid passing through it.
Description : The use of pressurized radiator cap is to a) Reduce evaporation loss b) Increase engine operating temperature c) Increase boiling point of water d) Reduce heat losses
Last Answer : ans c
Description : ULV spraying is used for a) Minimizing drift b) Reduce application rate c) Aerial spraying d) Spot application
Last Answer : ans b
Description : If power were lost to the winch shown in the illustration while in 'second point hoist' the winch would stop. When power is restored the winch would ______________. EL-0102 A. continue to run at ' ... switch' is returned to 'off' closing the 'reset' contacts and then moved to any 'run' position
Last Answer : Answer: D
Description : Can anyone else do the water droplet sound in their mouth by taping their cheek?
Last Answer : It took me a week of trying, my sophmore year in high school, but I mastered it. I can even do it without flicking my cheek. —lurve for Ferris Bueller’s Day Off
Description : How do I clean water droplet marks off my glass shower wall?
Last Answer : have you tried oxyclean?
Description : What process cause the water droplet to fall to earth as precipitation?
Last Answer : Feel Free to Answer
Description : Tuberculosis is transmitted through – (1) Droplet transmission (2) Blood transfusion (3) Contaminated water (4) Sexual contact
Last Answer : (1) Droplet transmission Explanation: The bacteria get released into the air by someone who already has the TB bacteria in their body.
Description : Water vapor is -------? A. A gas (Answer) B. A cloud droplet C. A rain drop D. A snowflake
Last Answer : A. A gas (Answer)
Description : Which one of the following options gives the correct match of a disease with its causative organism and mode of infection? Disease Causative Mode of organism infection (a) Typhoid Salmonella ... infected bancrofti water and food (d) Malaria Plasmodium Bite of male vivax Anopheles mosquito
Last Answer : (a) Typhoid Salmonella With inspired typhi air
Description : Value of Nusselt number [Nu = (hD/k)] for the heat transfer byconduction from a droplet or a spherical particle to a surrounding stagnant film is (A) 0.5 (B) 2 (C) 10 (D) 100
Last Answer : (B) 2
Description : Which one of the following is an example of an indirect method of disease transmission? a. Coughing b. Droplet transmission c. A mosquito bite d. An animal bite
Last Answer : c. A mosquito bite
Description : Gage pressure within a spherical droplet of a fluid is 'p'. What will be gage pressure within a bubble of the same size & of the same fluid? (A) p (B) 2 p (C) 0.5 p (D) 0.25 p
Last Answer : (B) 2 p
Description : For a given application rate the number of droplet is inversely proportional to............of the diameter of droplets. A) Square b) cube C) one fifth d) none of the above
Last Answer : b) cube
Description : Which altra low volume sprayer is used for controlled droplet application a). Herbi sprayer b). Micron herbi sprayer c). Both a and b d). None of these
Last Answer : c). Both a and b
Description : The loss of water by plants in the form of vapor i called: a) evaporation b) transpiration c) evapotranspiration d) vaporization
Last Answer : ANSWER: C -- evapotranspiration
Description : The application of plastic mulch? 1. Reduces the surface evaporation 2. Increases the yield of cabbage crop moisture 3.both of these 4. none of these
Last Answer : ans 3
Description : The specific terms used in phase transitions a. melting b. evaporation c. freezing d. sublimation
Last Answer : evaporation
Description : ____ is when water goes from a solid to a gas without passing through the liquid phase. a. Transfusion c. Evaporation b. Sublimation d. Condensation
Last Answer : b. Sublimation
Description : When a gas turns into a liquid the process is called: A. Condensation B. Evaporation C. Deposition D. Sublimation
Last Answer : ANSWER: A
Description : The process of evaporation of a liquid is accompanied by
Last Answer : The process of evaporation of a liquid is accompanied by A. Increase in ethalpy B. Decrease in free energy C. Increase in entropy D. All
Description : Why does a liquids evaporation rate increases when liquid is heated?
Last Answer : More molecules have enough energy to overcome the attractiveforces holding them in the liquid.
Description : What is a physical process by which vapor becomes liquid or solid the opposite of evaporation?
Last Answer : condensation
Description : The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy-diagram represents (a) condensation of the refrigerant vapour (b) evaporation of the refrigerant liquid (c) compression of the refrigerant vapour (d) metering of the refrigerant liquid
Last Answer : Ans: b
Description : The process of breaking up or liquid into fine droplets by spraying is A. vaporization B. atomization C. condensation D. evaporation
Last Answer : ANSWER : B
Description : For a given liquid, the rate of evaporation depends on 1. the temperature of the liquid 2. the temperature of air 3. the surface area of the liquid Which of the above factors is/are correct? (a) 1 only (b) 1 and 2 (c) 2 and 3 (d) 1, 2 and 3
Last Answer : Ans:(d)
Description : In a refrigerator what produces the cooling? (1) The ice which deposits on the freezer (2) The sudden expansion of a compressed gas (3) The evaporation of a volatile liquid (4) None of these
Last Answer : (4) None of these Explanation: Basically, refrigeration system consists of devices that compress and expand refrigerant gas. When refrigerant gas is compressed it expels heat and when it is suddenly ... inside of the fridge is cooled to a temperature below the ambient temperature of the room.
Description : Separation of two or more components of a liquid solution cannot beachieved by (A) Fractional crystallisation (B) Liquid extraction (C) Absorption (D) Evaporation
Last Answer : (C) Absorption
Description : Heat sensitive materials with very high latent heat of vaporisation may be economically separated using (A) Liquid extraction (B) Distillation (C) Evaporation (D) Absorption
Last Answer : (A) Liquid extraction
Description : The recovery of penicillin from the acidified fermentation broth is done by (A) Distillation (B) Evaporation (C) Absorption (D) Liquid extraction
Last Answer : (D) Liquid extraction
Description : In case of evaporators, liquid entrainment results primarily due to (A) High vacuum in the evaporator (B) High evaporation rate (C) Foaming of the solution (D) High heat transfer rate
Last Answer : (C) Foaming of the solution
Description : Leidenfrost point is a term concerned with the (A) Condensation of the saturated vapor on a cold surface (B) Concentration of a corrosive solution by evaporation (C) Heat transfer between two highly viscous liquids (D) Boiling of a liquid on a hot surface
Last Answer : (D) Boiling of a liquid on a hot surface
Description : Pick out the wrong statement. (A) The value of hydrostatic head increases with increase in vacuum in the effect in a multiple effect evaporator system (B) Entering velocity of the liquid in ... a multiple effect evaporation system, the number of effects is limited by the total boiling point rise
Last Answer : (C) Duhring's plot is used for calculating the concentration of solution
Description : The phenomenon occuring during pumping of a liquid solution containing dissolved gases, which may come out of the solution giving rise to gas pockets, is termed as (A) Evaporation (B) Cavitation (C) Sublimation (D) Stripping
Last Answer : (B) Cavitation
Description : Black liquor is converted into white liquor by (A) Evaporation and burning the concentrate followed by causticisation of products (B) Multi-effect evaporation only (C) Selective liquid extraction (D) Extractive distillation
Last Answer : (A) Evaporation and burning the concentrate followed by causticisation of products
Description : Glycerine is recovered from lye by (A) Evaporation followed by vacuum distillation (B) Liquid extraction technique (C) Extractive distillation technique (D) None of these
Last Answer : (A) Evaporation followed by vacuum distillation