Description : Which of the following agitators having a large blade area, rotating at slow speed is used for mixing high viscosity liquids (> 50000 centipoise)? (A) Propeller (B) Helical screw (C) Flat blade turbine (D) Curved blade turbine
Last Answer : (B) Helical screw
Description : Helical screw agitator is used for (A) Mixing highly viscous pastes (B) Blending immiscible liquids (C) Mixing liquids at very high temperature (> 250 °C) (D) None of these
Last Answer : (A) Mixing highly viscous pastes
Description : Viscous & heat sensitive liquids are concentrated in __________ evaporators. (A) Open pan (B) Long tube (C) Agitated film (D) None of these
Last Answer : (C) Agitated film
Description : Agitated film evaporator is suitable for concentrating __________ liquids. (A) Foaming (B) Viscous (C) Very thin (D) Corrosive
Last Answer : (B) Viscous
Description : Propellers are (A) Axial flow mixers (B) Low speed impeller (C) Used for mixing liquids of high viscosity (D) Radial flow mixers
Last Answer : (A) Axial flow mixers
Description : Which of the following is not accomplished by agitation of liquids in agitators? (A) Dispersing gas in liquid (B) Blending of immiscible liquids (C) Dispersing immiscible liquid in form of emulsion (D) Suspending solid particles
Last Answer : (B) Blending of immiscible liquids
Description : __________ are mixed using ribbon blenders. (A) Lumpy solids and low viscosity liquids (B) Dry powders (C) High viscosity liquids (D) Thick pastes
Last Answer : (B) Dry powders
Description : Ribbon blenders are exclusively meant for (A) Blending miscible liquids (B) Non-flowing powder and thin pastes (C) Bath mixing (D) Continuous mixing
Last Answer : (B) Non-flowing powder and thin pastes
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 : Forced circulation evaporators are useful for the concentration of viscous, salting and scale forming liquors. Which of the following is a forced circulation evaporator? (A) Long vertical evaporator (B) Horizontal tube evaporator (C) Agitated film evaporator (D) Calandria vertical tube evaporator
Last Answer : (C) Agitated film evaporator
Description : For a turbine agitated and baffled tank, operating at low Reynold's number (based on impeller diameter), the power number (Np ) varies with NRe as (A) Np ∝ NRe (B) Np ∝ √NRe (C) Np → constan (D) Np ∝ 1/NRe
Last Answer : (D) Np ∝ 1/NRe
Description : Which is the most suitable for the concert-ration of highly concentrated solution? (A) Open pan evaporation (B) Long tube vertical evaporator (C) Agitated film evaporator (D) None of these
Last Answer : (A) Open pan evaporation
Description : Pick out the wrong statement pertaining to the turbine agitator. (A) Recommended peripheral speed for the turbine agitator is 200-250 metres/minute (B) Pitched blade turbine agitator gives only radial flow with ... l/4th of agitator diameter (with central disc, it is l/8th of the agitator diameter)
Last Answer : (B) Pitched blade turbine agitator gives only radial flow with complete absence of the axial flow
Description : A pitched-blade turbine draws __________ a straight blade turbine. (A) Less power than (B) More power than (C) Same power as (D) Data insufficient to predict
Last Answer : (A) Less power than
Description : A jet engine turbine blade is normally manufactured by (A) Forging (B) Shell moulding (C) Investment casting (D) Pressure die casting
Last Answer : (C) Investment casting
Description : Use of baffles in agitators help in minimising the __________ tendency. (A) Swirling (B) Vortexing (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (C) Both (A) & (B)
Description : An ideal fluid is (A) Frictionless & incompressible (B) One, which obeys Newton's law of viscosity (C) Highly viscous (D) None of these
Last Answer : (A) Frictionless & incompressible
Description : In case of unsteady fluid flow, conditions & flow pattern change with the passage of time at a position in a flow situation. Which of the following is an example of unsteady flow? (A) ... level is maintained (D) Low velocity flow of a highly viscous liquid through a hydraulically smooth pipe
Last Answer : (B) Water flow in the suction and discharge pipe of a reciprocating pump
Description : Petrolatum is (A) Same as petroleum ether (B) Petroleum coke (C) A mixture of microcrystalline wax in viscous hydrocarbon liquids (D) None of these
Last Answer : (C) A mixture of microcrystalline wax in viscous hydrocarbon liquids
Description : Which of the following forced convection heat transfer equation accounts for the liquid viscosity effect for viscous liquids? (A) Dittus-Boelter equation (B) Sieder-Tate equation (C) Nusselt equation (D) None of these
Last Answer : (B) Sieder-Tate equation
Description : Pick out the wrong statement. (A) A fluid mass is free from shearing forces, when it is made to rotate with a uniform velocit (B) Newton's law of viscosity is not applicable to the ... types of bearings (D) Rise of water in capillary tubes reduces with the increasing diameter of capillary tubes
Last Answer : (B) Newton's law of viscosity is not applicable to the turbulent flow of fluid with linear velocity distribution
Description : How long are the blade on a wind turbine?
Last Answer : Feel Free to Answer
Description : How long is a wind turbine rotor blade?
Description : A turbine is said to have an axial discharge when the steam leaves the blade tip at _________ to the direction of the blade motion. (A) 60° (B) 90° (C) 180° (D) 270°
Last Answer : (B) 90°
Description : The isentropic enthalpy drop in moving blade is two-third of the isentropic enthalpy drop in fixed blades of a turbine. The degree of reaction will be (A) 0.4 (B) 0.56 (C) 0.67 (D) 1.67
Last Answer : (A) 0.4
Description : A propeller agitator (A) Produces mainly axial flow (B) Is used for mixing high viscosity pastes (C) Runs at very slow speed (2 rpm) (D) All (A), (B) and (C)
Last Answer : (A) Produces mainly axial flow
Description : Liquids that evaporate quickly are known as _________ liquids. A. Viscous B. Transient C. Volatile D. Light
Last Answer : ANSWER: C
Description : Which of the following liquids is most viscous? (1) Oil (2) Milk (3) Water (4) petrol
Last Answer : (1) Oil Explanation: Informally, viscosity is the quantity that describes a fluid's resistance to flow. It is dependent on temperature. Viscosity of the different fluids (in cP) is as follows: Edible Oil: 20 to 60; Milk: approximately 1.0; Water: 0.894; and Petrol: around 0.82 to 0.95 cP.
Description : The Euler's equation for the motion of liquids is based upon the assumption that (A) The fluid is non - viscous, homogeneous and incompressible (B) The velocity of flow is uniform over the section (C) The flow is continuous, steady and along the stream line (D) All of the above
Last Answer : Answer: Option D
Description : Which of the following liquids is most viscous? (1) Oil (2) Milk (3) Water (4) Petrol
Last Answer : Oil
Description : Explain with reason through which side of shell and tube heat exchanges, the following liquids are directed. (i) viscous liquid (ii) high pressure liquid (iii) corrosive liquid
Last Answer : Viscous liquid : Viscous liquid is passed through shell side Reason: because of the presence of baffles in the shell induce turbulence and hence increases heat transfer rate. High pressure liquid: High ... To avoid expensive alloy shells (in order to save the cost of expensive material for shell).
Description : Open pan evaporators are preferred to be used, when the solution to be concentrated is (A) Scaling (B) Highly viscous (C) Corrosive (D) Salty
Last Answer : (B) Highly viscous
Description : Multistage centrifugal pumps are generally used for (A) High head (B) Low head but high discharge (C) Highly viscous liquid (D) Slurries of high solid concentration
Last Answer : (A) High head
Description : Turbulent flow generally occurs for cases involving (A) Highly viscous fluid (B) Very narrow passages (C) Very slow motion (D) None of these
Last Answer : (D) None of these
Description : Dynamite is a tool that can be used to cut down trees. To cut a tree 18 inches in diameter requires five sticks of dynamite: one on the north, south, east and west sides of the tree, and the ... you instruct the diver to put the fifth stick of dynamite if you wanted the tree to fall north? -Riddles
Last Answer : It doesn't matter where the fifth stick is placed, since the tree won't fall in any direction. Being wood, it will float and rise to the surface.
Description : Why scientist studied boat propulsion what did they learn about propellers?
Last Answer : Need answer
Description : In most of the mechanically agitated liquid-liquid extractors, baffles or horizontal compartmental plates are provided, which helps in (A) Reducing the axial mixing (B) Increasing the rate of extraction (C) Maintaining the concentration difference between the two phases (D) All 'a', 'b' & 'c'
Last Answer : (D) All 'a', 'b' & 'c'
Description : Which is the most suitable for the concentration of foamy & frothy liquors? (A) Agitated film evaporator (B) Long tube vertical evaporator (C) Open pan evaporator (D) None of these
Last Answer : (B) Long tube vertical evaporator
Description : The equipment used in the extraction of highly corrosive radioactive liquids is (A) Pulse column (B) Spray column (C) Mixer settler (D) Baffle tower
Last Answer : (A) Pulse column
Description : jim paddles from one shore -General Knowledge
Last Answer : Jim paddles from one shore of a lake three miles wide at 4 mph, and John paddles from the opposite shore at 5 mph. They will travel 20 minutes before they meet. Solution: Distance = Velocity * Time; (4 + 5) = 9 mph; 3/9 = 1/3 of an hour = 20 minutes.
Description : I'm looking for a small touch phone that fits in my pocket, only for sms and calls, only big paddles on the internet, you can please advise if it could be obtained and if so, which brand, thank you for every answer.
Last Answer : Need Answer
Description : Why are low head dams dangerous to small boats and paddles craft?
Last Answer : Backwash can pin you and the boat indefinitely.
Description : How To Make Hand Paddles
Last Answer : Hand paddles are long rods used to maneuver boats through waves. These rods are shaped like ladles so they can easily work around the weight of water and the force of waves. The blades of the ... best river rafting buddies. You get state of the art equipment without the hassle of glaring price tags.
Description : In the classroom, the teacher sends the message either as words or images. The students are really (A) Encoders (B) Decoders (C) Agitators (D) Propagators
Last Answer : (B) Decoders
Description : For evaporation of viscous solution in a multiple effect evaporator, the preferred feeding scheme is (A) Forward (B) Backward (C) Parallel (D) None of these
Last Answer : (B) Backward
Description : Multiple effect evaporation is generally recommended, when the (A) Large scale evaporation of liquor is needed (B) Corrosive liquids are to be concentrated
Last Answer : (A) Large scale evaporation of liquor is needed
Description : Explain the type of multiple effect evaporator feed arrangement used for handling viscous liquid.
Last Answer : Backward feed arrangement If the liquid is very viscous, then we have to adopt backward feed arrangement. In this arrangement, the feed solution and vapour flow is in opposite direction. Fresh feed is ... Not very common as it need pump. At low values of feed temperature higher economy.
Description : Which of the following is not an ultrafine grinder (colloid mill)? (A) Micronizers (B) Agitated mills and fluid energy mills (C) Toothed roll crusher (D) Hammer mills with internal classification
Last Answer : (C) Toothed roll crusher
Description : Which of the following equipments is not used for gas dispersion? (A) Agitated vessels (B) Bubble cap tray towers (C) Perforated sieve tray towers (D) Spray towers
Last Answer : (D) Spray towers