Description : Pick out the wrong statement. (A) More commonly used jaw crusher between Dodge jaw crusher and Blake jaw crusher is the later one (B) There are only four methods namely compression, impact ... Operating principles of Dodge and Blake jaw crushers are combined in the working of universal jaw crushers
Last Answer : (C) Cutting machines mainly employ 'attrition' for size reduction of solids
Description : Toothed roll crushers achieve size reduction by (A) Tearing (shear) and compression (B) Impact and attrition (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (C) Both (A) & (B)
Description : The main size reduction operation in ultrafine grinders is (A) Cutting (B) Attrition (C) Compression (D) Impact
Last Answer : (B) Attrition
Description : Maximum size reduction in a fluid energy mill is achieved by (A) Compression (B) Interparticle attrition (C) Cutting (D) Impact
Last Answer : (B) Interparticle attrition
Description : Maximum size reduction in a ball mill is done by the, __________ action. (A) Attrition (B) Compression (C) Impact (D) Cutting
Last Answer : (C) Impact
Description : General mechanism of size reduction in intermediate and fine grinder is by (A) Cutting action (B) Compression (C) Compression and tearing (D) Impact and attrition
Last Answer : (D) Impact and attrition
Description : For coarse reduction of hard solids, use (A) Impact (B) Attrition (C) Compression (D) Cutting
Last Answer : (C) Compression
Description : Which of the following size reduction equipments employs mainly attrition for ultrafine grinding? (A) Jet mills (B) Fluid energy mill (C) Micronizer (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : The material is crushed in a gyratory crusher by the action of (A) Impact (B) Compression (C) Attrition (D) Cutting
Last Answer : (B) Compression
Description : Ultrafine grinders operate principally by (A) Slow compression (B) Impact (C) Attrition (D) Cutting action
Last Answer : (C) Attrition
Description : Size reduction mechanism used in Jaw crushers is (A) Attrition (B) Compression
Description : The mechanism of size reduction by a hammer mill is by impact and attrition between the (A) Grinding element & the housing (B) Feed particles (C) Both (A) and (B) (D) Neither (A) nor (B)
Last Answer : (C) Both (A) and (B)
Description : Soft & non-abrasive materials can be made into fines by (A) Attrition (B) Compression (C) Cutting (D) None of these
Last Answer : (A) Attrition
Description : Size reduction does not occur due to compression in case of (A) Rod mills (B) Gyratory crushers (C) Jaw crushers (D) Smooth roll crushers
Last Answer : (A) Rod mills
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 : A patient has improperly formed DEJ, reduction in size of pulp chamber, chipping and attrition of enamel that would MOSTLY be: A. Fluorosis B. Amelogenesis imperfecta C. Dentinogenesis imperfecta
Last Answer : C. Dentinogenesis imperfecta
Description : Ball mills and tube mills with flint or porcelain balls are used for size reduction of (A) Asbestos (B) Rubber (C) Non-metallic ores (D) Limestone
Last Answer : (C) Non-metallic ores
Description : Size reduction of the __________ can be suitably done by ball mills, crushing rolls and rod mills. (A) Metalliferous ores (B) Non-metallic ores (C) Basic slags (D) Asbestos & mica
Last Answer : (A) Metalliferous ores
Description : Size reduction of asbestos and mica is done by (A) Hammer mills (B) Rod mills (C) Gyratory crushers (D) Crushing rolls
Last Answer : (A) Hammer mills
Description : Alloy powder manufactured by the following process have spherical shapes. (A) Electrochemical deposition (B) Gaseous reduction (C) Atomisation (D) Mechanical attrition
Last Answer : (C) Atomisation
Description : The grinding in a hammer crusher takes place due to the (A) Attrition (B) Impact (C) Both (A) & (B) (D) Neither (A) nor (B
Description : Los Angeles testing machine is used to conduct (A) Abrasion test (B) Impact test (C) Attrition test (D) Crushing strength test
Last Answer : Answer: Option A
Description : Explain the working, advantages and disadvantages of any one mill based on the principle of combined impact and attrition?
Last Answer : which of the following mill works on the principle of combined impact and attrition
Description : Which of the following is not a cutting machine? (A) Dicers (B) Knife cutters (C) Slitters (D) Tube mills
Last Answer : (D) Tube mills
Description : __________ mills are termed as impactors. (A) Hammer (B) Cage (C) Rolling-compression (D) None of these
Last Answer : (A) Hammer
Description : Which of the following terminology is not used for size reduction of materials to fine sizes or powders? (A) Comminution (B) Dispersion (C) Pulverisation (D) Compression
Last Answer : (D) Compression
Description : Puddling is done to achieve : a. Soft soil bed b. Non leaching of water c. Size reduction of clods d. Conservation of moisture
Last Answer : b. Non leaching of water
Description : In case of a hammer crusher, (A) Crushing takes place by impact breaking (B) Maximum acceptable feed size is 30 cms (C) Reduction ratio can be varied by adjusting the distance from cage to hammers (D) All (A), (B) and (C)
Description : Processing of a data file to reduce its size for storage on disk is termed : (1) Amplification (2) Reduction (3) Compression (4) Rarefaction
Last Answer : Compression
Description : Explain the factors responsible for localisation of jute textile mills mainly on the banks of the river Hugli. -SST 10th
Last Answer : Factors responsible for location of jute mills in the Hugli basin are: (i) Proximity of the jute producing areas. (ii) Inexpensive water transport, supported by a good network of railways ... (iv) Kolkata as a large urban centre that provides banking, insurance and other commercial facilities.
Description : Which of the following factors can affect the shape and size of the pulp canal: A. Chemical irritation and caries B. Trauma and function C. Attrition, wear and aging of the patient D. All of the above
Last Answer : D. All of the above
Description : Electrolytic reduction cell used for conversion of calcined Al2O3to Al is a carbon lined furnace operating at 800-900 °C. The purpose of electric current supplied to the furnace is to (A) Achieve very high ... by the generation of heat (C) Electrolytically dissociate alumina (D) Both (B) & (C)
Last Answer : (D) Both (B) & (C)
Description : Vacuum is generally maintained in the vapour space of an evaporator mainly to (A) Get economical temperature difference by using moderate pressure steam (B) Facilitate forward ... (C) Concentrate heat sensitive materials (D) Achieve very high concentration of the final product
Last Answer : (A) Get economical temperature difference by using moderate pressure steam
Description : Pick out the wrong statement. (A) Cumulative analysis for determining surface area is preferred over differential analysis, because of the assumption that "all particles in a simple fraction equal in size" is ... throwing of the balls through the air to the toe of the heap is called 'cataracting'
Last Answer : (C) Capacity of crusher in choke feeding is increased
Description : Without losing quality, JPEG-2000 can achieve compression ratios of A. 20:1 B. 2000:1 C. 2:1 D. 200:1
Last Answer : D. 200:1
Description : __________ mill is not used for grinding wheat into flour and for milling of cereals & other vegetable products. (A) Buhrstone (B) Roller (C) Attrition (D) Pebble
Last Answer : (D) Pebble
Description : Ball mill is used for (A) Crushing (B) Coarse grinding (C) Fine grinding (D) Attrition
Last Answer : (C) Fine grinding
Description : Sometimes resellers are offered a temporary price reduction for purchasing specified quantities of a product. Such offers are used to provide them with an incentive to handle a new product, to achieve a ... sales promotion? A)Push money B)Buy -back allowance C)Buying allowance D)Money -off offer
Last Answer : C)Buying allowance
Description : Independent firms at different channel levels integrate their programs on a contractual basis to achieve systemic economies and increased market impact are known as . A. Corporate vertical marketing ... B. Contractual vertical marketing systems C. Administered vertical D. None of the above
Last Answer : B. Contractual vertical marketing systems
Description : Concerned about the impact on her firm's promotional messages, Karen Dickson of Magnum PLC., seeks an approach with immediate feedback. She is most likely to achieve this through. A)television advertising B)newspaper advertising C)publicity D)personal selling E)sales promotion
Last Answer : D)personal selling
Description : Petroleum coke is used mainly in the (A) Discoloration of yellow glycerine (B) Sugar refining (C) Manufacture of carbon electrode (D) Blast furnace for reduction of iron ore
Last Answer : (C) Manufacture of carbon electrode
Description : Lagooning process is mainly a means of the (A) Sludge disposal (B) Reduction of excessive flow in sewers (C) Biological treatment of wastes (D) None of these
Last Answer : (A) Sludge disposal
Description : Post augmentation or reduction mammaplasty, what is the best compression garment to ensure comfort & helps shape the breast?
Last Answer : lipomed bra from the house of PMIPL, leading & exclusive importer and distributor of world class compressio garments offers a firm support post augmentation and reduction mammoplasty. The elsatic fabric offers a pleasant feel on the skin and ensures optimum comfort
Description : The reduction in volume of soil due to squeezing out of water from the voids, is termed (A) Primary consolidation (B) Primary compression (C) Primary time effect (D) All the above
Last Answer : Answer: Option D
Description : By using data compression technique, what can be done in the data storage place of memory and disk ? a) increment b) Reduction c) Transfer d) Repetition
Last Answer : b) Reduction
Description : The formation of 'Mushroom rock' in desert region is an example of – (1) Deflation (2) Attrition (3) Abrasion (4) Erosion
Last Answer : (3) Abrasion Explanation: The rocks having broad upper part and narrow base resembling an umbrella or mushroom are called mushroom rocks or pedestal rocks. These undercut, mushroomshaped rocks are formed due to abrasive works of wind.
Description : Time period that is considered from the inception of the credit, investment or negotiable instrument and ends upon the maturity or expiry of the instrument is referred as ________ A. Amortisation Period B. Amortising Swap C. Asset Backed Security D. Attrition Analysis
Last Answer : A. Amortisation Period Explanation: The amortisation period on a mortgage is the total length of time it will take you to pay off your mortgage.
Description : Pick up the correct statement from the following: (A) Acid test is done to find out the weathering quality of stones (B) Attrition test is done to find out the rate of wear of stones which are used ... (C) Crushing test is done to find out the compressive strength of the stone (D) All the above
Description : What is the process that tends to build up the land surface by deposition of solid material in its lower areas, known as? a. Abrasion b. Agglomeration c. Aggradation d. Attrition
Last Answer : c. Aggradation
Description : Generalised loss of tooth structure by chemical means called, A. Erosion B. Attrition
Last Answer : A. Erosion