Description : The type of aggregates not suitable for high strength concrete and for pavements subjected to tension, is (A) Rounded aggregate (B) Irregular aggregate (C) Angular aggregate (D) Flaky aggregat
Last Answer : Answer: Option A
Description : Workability of concrete for a given water content is good if the aggregates, are (A) Rounded aggregate (B) Irregular aggregate (C) Angular aggregate (D) Flaky aggregate
Description : Pick up the correct statement from the following: (A) According to the petrological characteristics, concrete aggregates are classified as heavy weight, normal weight and light weight (B) According to ... glassy, smooth, granular, rough, crystalline, honey combed and porous (D) All the above
Last Answer : Answer: Option D
Description : The aggregates of __________________-shape have maximum voids (a) Irregular (b) Angular (c)Rounded (d) Flaky
Last Answer : (b) Angular
Description : The aggregates of __________________-shape have manimum voids (a) Irregular (b) Angular (c)Rounded (d) Flaky
Last Answer : (c)Rounded
Description : Workability of concrete for a given water content is good, if the aggregates are [ A ] Rounded [ B ] Irregular [ C ] Angular [ D ] Flaky
Last Answer : [ A ] Rounded
Description : In order to obtain the best workability of concrete, the preferred shape of aggregate is (A) Rounded (B) Elongated (C) Angular (D) All of the above
Description : The coarse aggregate which possess the property of good interlocking are [ A ] rounded shape [ B ] elongated shape [ C ] angular shape [ D ] none of the above
Last Answer : [ C ] angular shape
Description : The type of aggregates of same nominal size, which contain less voids when compacted, are (A) Rounded spherical (B) Irregular (C) Flaky (D) None of these
Description : An aggregate is said to be flaky, if its least dimension is less than (A) 2/3 mean dimension (B) 3/4 mean dimension (C) 3/5 mean dimension (D) 5/8 mean dimension
Last Answer : (C) 3/5 mean dimension
Description : An aggregate which passes through 25 mm I.S. sieve and is retained on 20 mm sieve, is said to be flaky if its least dimension is less than (A) 22.5 mm (B) 18.5 mm (C) 16.5 mm (D) 13.5 mm
Description : An aggregate is said to be flaky if its least dimension is less than (A) 1/5th of mean dimension (B) 2/5th of mean dimension (C) 3/5th of mean dimension (D) 4/5th of mean dimension
Last Answer : Answer: Option C
Description : A flaky aggregate is said to be elongated if its length is (A) Equal to the mean size (B) Twice the mean size (C) Thrice the mean size (D) Four times the mean size
Last Answer : Answer: Option B
Description : If aggregates completely pass through a sieve of size 75 mm and are retained on a sieve of size 60 mm, the particular aggregate will be flaky if its minimum dimension is less than (A) 20.5 mm (B) 30.5 mm (C) 40.5 mm (D) 50.5 mm
Description : An aggregate is said to be flaky, if its least dimension is less than [ A ] 2/3 mean dimension [ B ] 3/4 mean dimension [ C ] 3/5 mean dimension [ D ] 5/8 mean dimension
Last Answer : [ C ] 3/5 mean dimension
Description : An excess of flaky particles in concrete aggregates (A) Decreases the workability (B) Increases the quantity of water and sand (C) More than 15% are not desirable (D) All the above
Description : If the engineer-in-charge approves, the 10 cm cubes may be used for the work test of concrete provided maximum nominal size of aggregate, does not exceed (A) 10 cm (B) 15 cm (C) 20 cm (D) 25 cm
Description : In designing concrete structures, normally maximum aggregate sizes are adopted with ranges from 10mm to 20mm. Does an increase of maximum aggregate size benefit the structures?
Last Answer : To answer this question, let's consider an example of a cube. The surface area to volume ratio of a cube is 6/b where b is the length of the cube. This implies that ... requirement can offset the disadvantages brought about by discontinuities as suggested by Longman Scientific and Technical (1987).
Description : For ensuring quality of concrete, use (A) Single sized aggregates (B) Two sized aggregate (C) Graded aggregates (D) Coarse aggregates
Last Answer : (C) Graded aggregates
Description : Strength of concrete increases with (A) Increase in water-cement ratio (B) Increase in fineness of cement (C) Decrease in curing time (D) Decrease in size of aggregate
Last Answer : (B) Increase in fineness of cement
Description : Inert material of a cement concrete mix, is (A) Water (B) Cement (C) Aggregate (D) None of these
Description : Workability of concrete is inversely proportional to (A) Time of transit (B) water-cement ratio (C) The air in the mix (D) Size of aggregate
Description : For the construction of cement concrete floor, the maximum permissible size of aggregate, is (A) 4 mm (B) 6 mm (C) 8 mm (D) 10 mm
Description : Pick up the correct statement from the following: (A) Continuous grading is not necessary for obtaining a minimum of air voids (B) The omission of a certain size of aggregate is shown by ... in concrete increases the workability but also increases the liability to segregation (D) All the above
Description : C.R.R.I. charts are used to obtain a relationship between strength of concrete and (A) Water cement ratio (B) Workability (C) Grading of aggregate (D) Fineness modulus
Description : The aggregate impact value of the aggregate used in (A) Building concrete is less than 45 (B) Road pavement concrete is less than 30 (C) Runway concrete is less than 30 (D) All the above
Description : Pick up the correct statement from the following: (A) A highly absorptive aggregate reduces the workability of concrete considerably (B) The specific gravity of aggregate is important for the determination ... and porosity of an aggregate influence the property of the concrete (D) All the above
Description : Workability of concrete is directly proportional to (A) Aggregate cement ratio (B) Time of transit (C) Grading of the aggregate (D) All of above
Description : Strength of cement concrete primarily depends upon (A) Quality of water (B) Quantity of aggregate (C) Quantity of cement (D) Water-cement
Description : The ratio of differenct ingredients (cement, sand and aggregate) in concrete mix of grade M20 is. (a) 1:1:2 (b) 1:1.5:2 (c) 1:2:4 (d) 1:3:6
Last Answer : (b) 1:1.5:2
Description : According to the rule of water cement ratio, the strength of concrete wholly depends upon. (a) The quality of cement. (b) The quality of cement mixed with aggregate. (c) The amount of water used in preparation of concrete mix. (d) All of the above
Last Answer : (c) The amount of water used in preparation of concrete mix.
Description : The deleterious materials present in the aggregate (a) Prevent normal hydration of cement (b) Reduce the strength and durability of concrete. (c) Modify the setting action and cause efloresecence. (d) All of the above
Last Answer : (d) All of the above
Description : Which of the following statement is correct (a) The maximum size of coarse aggregate should not exceed one fourth of the minimum dimension of the plain concrete member. (b) The maximum size of coarse ... aggregates of 40mm, 20mm and 10mm sizes are commonly used for concrete works (d) All the above
Last Answer : (d) All the above
Description : For the manufacture of concrete a low density, the aggregate used is (a) Furnace clinker (b) Coke breeze (c)Saw dust (d) All the above
Description : For reinforced concrete, the aggregate used is (a) Sand (b) Gravel (c) Crushed rock (d) All of these
Last Answer : (d) All of these
Description : Accordingly to IS: 383-1970, a good aggregate for concrete construction should be (a) Chemically inert (b) Sufficiently strong (c)Sufficiently hard and durable (d) All the above
Description : The material used as an ingredient of concrete is usually (a) Cement (b) Aggregate (c) Water (d) All the above
Description : The workability of concrete is mostly influenced by its [ A ] Water cement ratio [ B ] Aggregate cement ratio [ C ] Cement content [ D ] Water content
Last Answer : [ A ] Water cement ratio
Description : Inert material of a cement concrete mix, is [ A ] Water [ B ] Aggregate [ C ] Cement [ D ] None of these
Last Answer : [ B ] Aggregate
Description : Modulus of elasticity of concrete is primarily influenced by [ A ] Elastic properties of aggregate [ B ] Curing of concrete [ C ] Age of concrete [ D ] Mix proportion and type of cement
Last Answer : [ A ] Elastic properties of aggregate
Description : Addition of a progestin for 10-12 days every month to cyclic estrogen replacement therapy during menopause is recommended because the progestin: A. Prevents osteoporosis B. Prevents irregular bleeding C. Blocks increased risk of endometrial carcinoma D. Both ‘B’ and ‘C’ are correct
Last Answer : D. Both ‘B’ and ‘C’ are correct
Description : If a linear traverse follows a sharp curve round a large lake where it is difficult to have long legs, the accuracy of the traverse may be improved by (A) Taking short legs (B) Making ... (C) Making a subsidiary traverse to determine the length of a long leg (D) All the above
Last Answer : (C) Making a subsidiary traverse to determine the length of a long leg
Description : The angle of internal friction is maximum for (A) angular-grained loose sand (B) angular-grained dense sand (C) round-grained dense sand (D) round-grained loose sand
Description : The angle of internal friction, is least for (A) Angular-grained loose sand (B) Angular -grained dense sand (C) Round-grained loose sand (D) Clays
Description : The angular steps used for changing direction of the stairs, are called (A) Round steps (B) Angular steps (C) Winders (D) Radial steps
Description : Pick up the correct statement from the following: (A) An increase in water content must be accompanied by an increase in cement content (B) Angular and rough aggregates reduce the workability of the ... The slump of the concrete mix decreases due to an increase in temperature (D) All the above
Description : Which of the following is recommended for the improvement in flavor during ageing of beef under controlled conditions? A.Thamnidium B.Rhizopus C.T. elegans D.M. mucedo
Last Answer : A.Thamnidium
Description : What are the shape simplification methods for simplifying the irregular shape geometry as regular geometry?
Last Answer : Not sure if this is at all helpful to you, but from a 3d modelling standpoint, you could subdivide the shape into rectangles and triangles.
Description : Assertion A flexeble wire loop of irregular shape carrying current when placed in a uniform external magnetic field acquires a circular shape. Reason
Last Answer : Assertion A flexeble wire loop of irregular shape carrying current when placed in a uniform external ... circular shape is having the greatert area.