Description : Pick out the wrong statement. (A) Angle of repose of coal increases with its increasing size (B) Specific gravity of coal increases with its increasing maturity (C) Refractive index and reflectance of ... of coal decreases with increases in the volatile matter and decrease in the C/H ratio of coal
Last Answer : (D) Specific heat of coal decreases with increases in the volatile matter and decrease in the C/H ratio of coal
Description : Shatter index of the coke is a measure of its (A) Strength (B) Bulk density (C) Reactivity (D) None of these
Last Answer : (A) Strength
Description : Shatter index of metallurgical coke on 2 inches and 0.5 inch screen should be respectively around __________ percent. (A) 80 and 97 (B) 95 and 100 (C) 40 and 70 (D) 25 and 97
Last Answer : (A) 80 and 97
Description : What is the angle of repose and what are its applications in the chemical industry?
Last Answer : The dictionary defines angle of repose as the inclination of a plane at which a body placed on the plane would remain at rest, or if in motion would roll or slide down with uniform velocity ... concept is also important in the design of system designed to move bulk solids for the same reasons.
Description : Pick out the wrong statement. (A) Cokes of high reactivity are obtained from weakly coking coals (B) Cokes of high reactivity are obtained from strongly coking coals (C) Reactivity of coke is inversely proportional to its absolute density (D) Abrasion index of the coke is a measure of its hardness
Last Answer : (B) Cokes of high reactivity are obtained from strongly coking coals
Description : M10 index of coke indicates its (A) Compressive strength (B) Hardness (C) Abrasion resistance (D) Impact strength
Last Answer : Option C
Description : M10 index of coke indicates its (A) Compressive strength (B) Hardness (C) Abrasion resistance (D) Impact strength Answer: Option C
Description : Pick out the correct statement. (A) Angle of repose is always greater than the angle of slide (B) A hopper is a small bin with a sloping bottom (C) A silo is a short height ... used as a 'modifying agent' (for activating or depressing the adsorption of filming agents) in froth floatation process
Last Answer : (B) A hopper is a small bin with a sloping bottom
Description : Abrasion index of blast furnace coke should be around __________ percent. (A) 20 (B) 35 (C) 55 (D) 80
Last Answer : (D) 80
Description : The side slope of formation in embankment /cutting depends on a) Shearing strength of soil and its angle of repose* b) Angle of repose c) Bearing capacity of the soil d) Optimum moisture content of the soil
Last Answer : a) Shearing strength of soil and its angle of repose*
Description : The slope on the road generally provided on the curves is known as a.Angle of repose b.Angle of friction c.Angle of banking d.Angle of reaction e.None of the above
Last Answer : c. Angle of banking
Description : The angle which an inclined surface makes with the horizontal when a body placed on it is on the point moving down is known as a.Angle of friction b.Angle of limiting friction c.Angle of inclination d.Angle of repose e.None of the above
Last Answer : d. Angle of repose
Description : Angle of friction and angle of repose are (1) Equal to each other (2) Not equal to each other (3) Proportional to each other (4) None of the above
Last Answer : (1) Equal to each other Explanation: The angle of repose or the critical angle of repose, of a granular material is the steepest angle of descent or dip of the slope relative to the horizontal ... the density, surface area and shapes of the particles, and the coefficient of friction of the material.
Description : Which one of the following statements is not correct? (A) The tangent of the angle of friction is equal to coefficient of friction (B) The angle of repose is equal to angle of ... coefficient of friction (D) The sine of the angle of repose is equal to coefficient to friction
Last Answer : (D) The sine of the angle of repose is equal to coefficient to friction
Description : Tangent of angle of friction is equal to (A) Kinetic friction (B) Limiting friction (C) Angle of repose (D) Coefficient of friction
Last Answer : (D) Coefficient of friction
Description : The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of (A) Friction (B) Limiting friction (C) Repose (D) Kinematic friction
Last Answer : (C) Repose
Description : The ratio of limiting friction and normal reaction is known as (A) Coefficient of friction (B) Angle of friction (C) Angle of repose (D) Sliding friction
Last Answer : (A) Coefficient of friction
Description : The angle that Coulomb's failure envelope makes with the horizontal is called (A) Cohesion (B) Angle of internal friction (C) Angle of repose (D) None of the above
Last Answer : Answer: Option A
Description : The change of moisture content of soils, changes the (A) Value of the angle of repose (B) Amount of compaction required (C) Cohesive strength of soil (D) All the above
Last Answer : Answer: Option D
Description : A plane inclined at an angle to the horizontal at which the soil is expected to stay in the absence of any lateral support, is known as (A) Natural slope line (B) Repose line (C) The line (D) All the above
Description : The angle of repose of a soil is the maximum angle which the outer face of the soil mass makes (A) With the horizontal (B) With the vertical (C) With the perpendicular to the inclined plane of the soil (D) None of these
Description : The stem of a cantilever retaining wall which retains earth level with top is 6 m. If the angle of repose and weight of the soil per cubic metre are 30° and 2000 kg respectively, the effective width of the stem at the bottom, is (A) 51.5 (B) 52.5 (C) 53.5 (D) 54.5
Last Answer : Answer: Option C
Description : If is the angle of repose of soil of weight w kg/m3 , the horizontal pressure p at a depth of h metres per metre length of wall, is (A) wh × [(1 - sin )/(1 + )] (B) (wh/2) × [(1 - sin )/(1 + )] (C) wh - sin )/(1 + )] (D) wh )/(1 - )
Description : Durability of the fertilizer increases with a) Increase in the kinetic angle of repose b) Decrease in the kinetic angle of repose c) Decrease in the speed of the forward travel d) None of the above
Last Answer : b) Decrease in the kinetic angle of repose
Description : Angle of friction and angle of repose are (1) equal to each other (2) not equal to each other (3) proportional to each other (4) None of the above
Last Answer : equal to each other
Description : Define angle of repose.
Last Answer : Angle of repose is defined as the angle made by the inclined plane with the horizontal plane at which the body placed on an inclined plane is just on the point of moving down the plane, under the action of its own weight.
Description : The value of work index does not change materially from one equipment to another. If the value of work index determined for close circuit grinding is Wi, then the same for open circuit grinding will be (A) 0.5 Wi (B) Wi (C) 1.34 Wi (D) 3.34 Wi
Last Answer : (C) 1.34 Wi
Description : Work index is the gross energy (kWh/tonne of feed) necessary to reduce a very large feed to such a size that 80% of product particles will pass through a 0.1 mm screen. The value of work index determined for wet grinding should ... to get the same for dry grinding. (A) 1.0 (B) 0.5 (C) 1.34 (D) 4.34
Last Answer : (C) 1.34
Description : Grindability index of a coal is 100. It implies that the (A) Coal can be pulverised with great difficulty (B) Coal can't be pulverised (C) Coal can be easily pulverised (D) Power consumption in grinding the coal will be very high
Last Answer : (C) Coal can be easily pulverised
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 : Abrasion, cutting, and peeling are examples of what type of protective material removal?
Last Answer : Mechanical.
Description : What will shatter your patience?
Last Answer : Not so much anymore.
Description : What causes an oven door to shatter?
Last Answer : Some theories - - the food may have been trying to break out, you should securely cover whatever you put in it from now on - your oven has a thing against carbs, try fine meat products - it's ... Is your oven the same? Are they both shattering or just one? That may help you locate the cause.
Description : What category of elements would you choose to make container that wouldn't shatter if dropped during a test?
Last Answer : Need answer
Description : Can sliding glass doors be made shatter-proof?
Last Answer : Yes and no. "Shatter proof" sliding glass doors are available at Home Depot. However, this is really a level of shatter resistance if you read the fine print. There are storm proofing systems that can be added to sliding glass doors to make them shatter resistant for winds up to 175 mph.
Description : Are there any clear vases that are shatter resistant?
Last Answer : While plastic and Lexan vases do exist, they tend to be more easily tipped over because of their lighter weight. If you choose an acrylic vase, make sure it's not top-heavy, and take great care not to scratch the finish while washing it.
Description : Do they make shatter proof glass kitchen tables tops?
Last Answer : Not that I know of... there are plenty of shatter-proof cups and utensils out there, which are great for kids if you want something that looks a little better than plastic... however I've ... that is relatively heavy with sturdy legs, making it very difficult to tip over and unlikely to shatter.
Description : Ploughs used to break through shatter compacted or imperable soil layers. a) Disc plough b) Mold board plough c) Chisel plough d) Country plough
Last Answer : Chisel plough
Description : plough is used to break through and shatter compacted or otherwise impermeable soil layers. A. Disc plough C. Chisel plough B. Sub-soil plough D. None of the above
Description : Rittinger's number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger's number of a material indicates its (A) Easier grindability (B) Poor grindability (C) High power consumption in grinding (D) None of these
Last Answer : (A) Easier grindability
Description : Temperature of the product during ultrafine grinding (A) Increases (B) Decreases (C) Remain constant (D) May increase or decrease; depends on the material being ground
Last Answer : (A) Increases
Description : A dense structure of grinding wheel is not used for the (A) Ductile material (B) Hard materials (C) Brittle materials (D) Finishing cuts
Last Answer : A) Ductile material
Description : The refractive index of the material of a prism of `60^(@)` angle for yellow light is `sqrt(2)`. Calculate angle of minimum deviation, angle of incide
Last Answer : The refractive index of the material of a prism of `60^(@)` angle for yellow light is ... deviation, angle of incidence and angle of refraction.
Description : A ray of light suffers a deviation of `3.2^(@)` on passing through a thin prism of angle `5^(@)`. What is the refractive index of the material of the
Last Answer : A ray of light suffers a deviation of `3.2^(@)` on passing through a thin prism of angle ` ... is the refractive index of the material of the prism ?
Description : If critical angle for a material to air is `30^(@)`, the refractive index of the material will be
Last Answer : If critical angle for a material to air is `30^(@)`, the refractive index of the material will be
Description : What is critical angle for a material of refractive index `sqrt(2)` ?
Last Answer : What is critical angle for a material of refractive index `sqrt(2)` ?
Description : The refractive index of the material of a glass prism depends upon (a) The angle of the prism (b) The intensity of the incident light ray (c) The colour of the incident light ray (d) Size of the prism
Last Answer : Ans:(c)
Description : Presence of manganese in alloy steel improves its (A) Corrosion resistance (B) Cutting ability (C) Abrasion resistance & toughness (D) Elasticity & creep resistance
Last Answer : (C) Abrasion resistance & toughness
Description : Increase in ash content of blast furnace coke (A) Reduces its consumption in the furnace (B) Increases its consumption in the furnace (C) Does not affect its consumption in the furnace (D) Decreases its hardness and abrasion resistance
Last Answer : (B) Increases its consumption in the furnace
Description : Nylon-66 compared to nylon-6 has (A) Lower melting point (B) More abrasion resistant properties (C) Higher hardness (D) All (A), (B) and (C)
Last Answer : (C) Higher hardness