Description : . The most suitable equipment for removing the fine dust particle (< 1 micron dia.) from air below its dew point will be a/an (A) Bag filter (B) Electrostatic precipitator (C) Cyclone separator (D) Wet scrubber
Last Answer : (B) Electrostatic precipitator
Description : Most efficient and suitable dust removal equipment for removal of flyash from flue gas in a thermal power plant is the (A) Gravity settling chamber (B) Cyclone separator (C) Electrostatic precipitator (D) Bag filter
Last Answer : (C) Electrostatic precipitator
Description : Which of the following dust collection equipments is the least efficient (for sub-micronic particles)? (A) Dust catcher (gravity type) (B) Cyclone separator (C) Bag filter (D) Hollow wet scrubber
Last Answer : (A) Dust catcher (gravity type)
Description : Traces of tar fog present in the coke oven gas is removed by (A) Cyclone separator (B) Wet packed scrubber (C) Electrostatic precipitator (D) Washing with monoethanolamine
Description : Pick out the wrong statement. (A) A slight haze at the top of chimney indicates good combustion in the furnace (B) A bag filter incurs very small pressure drop and is very efficient for ... dust collection equipment for removal of submicronic dust particles present in flue gas (D) None of these
Last Answer : (B) A bag filter incurs very small pressure drop and is very efficient for removal of submicronic dust particles from flue gases at very high temperature
Description : Which of the following does not discharge the dust collected as a dry solid? (A) Electrostatic precipitator (B) Wet scrubber (C) Bag filter (D) Gravity settling chamber
Last Answer : (B) Wet scrubber
Description : Which is the most efficient dust removal equipment for removal of submicronic dust particles from blast furnace gas? (A) Packed scrubber (B) Gravity settling chamber (C) Electrostatic precipitator (D) Hydrocyclone
Description : The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the (A) Venturi atomiser (B) Gravity settling chamber (C) Electro-static precipitator (D) Cyclone separator
Last Answer : (C) Electro-static precipitator
Description : In large thermal power stations very fine particulates present in flue gas are removed by (A) Wet scrubber (B) Bag filter (C) Electrostatic precipitators (D) Dust catcher
Last Answer : (C) Electrostatic precipitators
Description : Which of the following is a batch sedimentation equipment? (A) Dust catcher (B) Filter thickener (C) Dry cyclone separator (D) Rotary sprayer scrubber
Last Answer : (B) Filter thickener
Description : Traces of liquid tar fog present in coke oven gas is separated using (A) Electrostatic precipitator (B) Cyclone separator (C) Strainer (D) None of these
Last Answer : (A) Electrostatic precipitato
Description : Dust laden air can be purified using a (A) Cyclone separator (B) Bag filter (C) Gravity settler (D) Tubular centrifuge
Last Answer : (A) Cyclone separator
Description : Operating principle of cyclone separator is based on the action of __________ dust particles. (A) Diffusion of (B) Centrifugal force on (C) Gravitational force on (D) Electrostatic force on
Last Answer : (B) Centrifugal force on
Description : Metallic wire mesh is used as a filtering medium for the separation of dust from dust laden gas in case of a/an (A) Air filter (B) Bag filter (C) Venturi scrubber (D) Hydrocyclones
Last Answer : (A) Air filter
Description : Which of the following will be unsuitable for dust cleaning from flue gas at 400°C from a pulverised coal fired boiler? (A) Multicyclones (B) Bag filter (C) Wet scrubber (D) Hydrocyclones
Last Answer : (B) Bag filter
Description : Dust collection efficiency of electrostatic precipitator can be as high as 99.9%. Maximum temperature and pressure of dust laden gas that can be cleaned in an electrostatic precipitator is respectively. (A) 200°C and 5 atm (B) 1000°C and 10 atm (C) 500°C and 50 atm (D) 1000°C and 500 atm
Last Answer : (B) 1000°C and 10 atm
Description : In the cyclone separator used for separation of dust from dust laden gas, the gas (A) Enters the cyclone from the top (B) Is admitted tangentially at high velocity (C) Develops a helical motion inside the chamber (D) Both (B) and (C
Last Answer : (D) Both (B) and (C
Description : Dust collection efficiency of a cyclone separator depends upon its (A) Diameter (B) Inlet gas velocity (C) Overall height (D) All (A), (B) & (C)
Last Answer : (D) All (A), (B) & (C)
Description : Which of the following is the most suitable for cleaning of fine coal dust (
Last Answer : (D) Froth floatation
Description : Which of the following is the treatment of water pollution? (1) Bag house filter (2) Windrow composting (3) Venturi scrubber (4) Reverse Osmosis
Last Answer : (4) Reverse Osmosis Explanation: Reverse osmosis (RO) is a water purification technology that uses a semipermeable membrane to remove ions, molecules, and larger particles from drinking water. It can ... of potable water. It is most commonly known for its use in drinking water purification form.
Last Answer : Reverse Osmosis
Description : What device is used to remove sulfur dioxide from power plant stack gases? w) scrubber x) precipitator y) digester z) clarifier
Last Answer : ANSWER: W -- SCRUBBER
Description : Ionisation potential applied across the electrodes of electrostatic tar precipitator is around (A) 230 V AC (B) 60 KV AC (C) 230 V DC (D) 60 KV DC
Last Answer : (D) 60 KV DC
Description : Coke oven gas after passing through return electrostatic tar precipitator (RETP) is used for the (A) Hot scarfing of steel slabs (B) Mixing with blast furnace gas (C) Coke oven battery heating (D) Steel ladle drying
Last Answer : (C) Coke oven battery heating
Description : Ionisation potential employed in the industrial electrostatic precipitator is of the order of (A) 30 to 70 kV DC (B) 30 to 70 kV AC (C) 230 V AC (D) 230 V DC
Last Answer : (A) 30 to 70 kV DC
Description : Naphthalene is removed from coke oven gas by (A) Adsorbing on palladium (B) Absorbing in ethanolamine (C) Scrubbing with wash oil (D) Passing it through electrostatic precipitator
Last Answer : (C) Scrubbing with wash oil
Description : Corona discharge is related to the operation of a/an (A) Induction motor (B) Electrostatic precipitator (C) Fast breeder reactor (D) Magneto hydrodynamic generator (MHD)
Last Answer : Option B
Description : Which of the following equipments is used for liquid dispersion? (A) Packed column (B) Venturi scrubber (C) Bubble cap plate column (D) Wetted wall column
Description : Close circuit grinding by a ball mill with air sweeping employs a (A) Classifier (B) Cyclone separator between mill & classifier (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (C) Both (A) & (B)
Description : Hydro-cyclone is a (A) Crusher (B) wet classifier (C) Dry classifier (D) Magnetic separator
Last Answer : (B) wet classifier
Description : Electrostatic precipitator is used to control the pollution of – (1) air (2) water (3) noise (4) thermal
Last Answer : (1) air Explanation: An electrostatic precipitator (ESP), or electrostatic air cleaner is a particulate collection device that removes particles from a flowing gas (such as air) using the force of an ... particles from a flowing gas (such as air) using the force of an induced electrostatic charge.
Description : Electrostatic precipitator is used to control — (1) Air pollution (2) Water pollution (3) Solid waste (4) Noise pollution
Last Answer : (1) Air pollution Explanation: An electrostatic precipitator (ESP), or electrostatic air cleaner is a particulate collection device that removes particles from a flowing has (such as air) using the force ... , and can easily remove fine particulate matter such as dust and smoke from the air stream.
Description : Electrostatic Precipitator is used to control the –
Last Answer : consequent pole
Description : 17 Electrostatic precipitator is used to remove: a) Poisonous gases present in the smoke released from the industry b) Carbon dioxide present in the smoke released from the automobiles c) ... smoke released from the automobiles d) Particulate matter present in the smoke released from the industry
Last Answer : ANS: d Particulate matter present in the smoke released from the industry
Description : Electrostatic precipitator is used to control – (1) Air pollution (2) Water pollution (3) Solid waste (4) Noise pollution
Last Answer : Air pollution
Description : Electrostatic precipitator is used to control the pollution of (1) air (2) water (3) noise (4) thermal
Last Answer : air
Description : The resistance offered by the filter used in a bag filter is proportional to (where, c = dust concentration, and s = particle size). (A) c/s (B) s/c (C) s . c (D) 1/s . c
Last Answer : (A) c/s
Description : Write short note on i. Cyclone separator. ii. Fluidized bed dryer.
Last Answer : Cyclone Separator Principle: Centrifugal force Construction1) Cyclone separator is size separation device 2) It consists of a cylindrical vessel with a conical base. 3) The upper part of ... are produced 3) High friction between practices generate electrostatic charges. Diagram:
Description : Describe the principle, construction, working and uses of cyclone separator.
Last Answer : Principle: Centrifugal force Construction- 1) Cyclone separator is size separation device 2) It consists of a cylindrical vessel with a conical base. 3) The upper part of the vessel is fitted ... the suspension of a solid in gas 2. It can be used with liquid suspension of solid
Description : Explain the construction and working of cyclone separator.
Last Answer : Construction: It consists of cylindrical vessel with a conical base. In upper part of vessel is fitted with a tangential inlet and fluid outlet. At the base it is fitted with solid outlet. ... solids are thrown out to the wall and fall to the conical base for discharge. Diagram
Description : Explain construction and working of cyclone separator with a well labelled diagram.
Description : Explain the working of cyclone separator with labelled diagram.
Last Answer : Cyclone separator: Working: Cyclone separators work much like a centrifuge, but with a continuous feed of dirty air. In a cyclone separator, dirty flue gas is fed into a chamber. The inside ... at the bottom of the container. The cleaned flue gas escapes out the top of the chamber.
Description : Cyclone collectors and electrostatic precipitators are meant ofor controlling
Last Answer : Cyclone collectors and electrostatic precipitators are meant ofor controlling A. Radioactive pollution B. ... C. Noise pollution D. Water pollution
Description : Cyclone collectors and electrostatic precipitators are meant for controlling
Last Answer : Cyclone collectors and electrostatic precipitators are meant for controlling A. Sewage pollution B. ... C. Pesticide pollution D. Natural pollution
Description : Froth floatation is used for (A) Washing fine coal dust (< 0.5 mm size) (B) Washing lump coal (> 80 mm size) (C) Removing ash from the coal based on difference in specific gravity of coal and ash
Last Answer : (A) Washing fine coal dust (< 0.5 mm size)
Description : Presence of free moisture in coal during its high temperature carbonisation (A) Reduces the coking time (B) Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls (C) Increases the loss of fine coal dust from the ovens when charging (D) None of these
Last Answer : (B) Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls
Description : Combustion of pulverised fuel (A) Requires larger combustion chamber than rich gaseous fuel (B) In a metallurgical furnace does not contaminate the product in the furnace by ash from fuel (C) Suppresses the discharge of fine dust and grit into atmosphere (D) All (A), (B) and (C)
Last Answer : (A) Requires larger combustion chamber than rich gaseous fuel
Description : [First fluff hits the dust] What would be your attributes or features for the perfect laptop case or bag?
Last Answer : Water and emp proof.
Description : How would you go about storing a bean bag chair so bugs and dust don't get on it?
Last Answer : answer:What about the largest garbage bags you can find. As an alternative (this might be overkill) you can go to Walmart or Target and get a large blue tarp - fairly heavy plastic fiber, water resistant ... the beanbpag chair in the middle and wrap it around. Tie string around it to hold in place.
Description : In bag filters, filter fabrics are never made of (A) Metallic wire woven mesh (B) Polyester fibres (C) Cotton fibres (D) Nylon fibres
Last Answer : (A) Metallic wire woven mesh