McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Civil Engineering .
1. |
Originally, Rankine’s theory of lateral earth pressure can be applied to only |
A. | cohesion less soil |
B. | cohesive soil |
C. | fine grained soil |
D. | coarse grained soil |
Answer» A. cohesion less soil | |
Explanation: as originally proposed, |
2. |
Rankine’s theory of lateral pressure was extended to other soil by |
A. | resal and bell |
B. | mohr |
C. | none of the mentioned |
D. | all of the mentioned |
Answer» A. resal and bell | |
Explanation: the theory of lateral pressure was extended to cohesive, stratified, partially immersed and submerged soil was by resal in 1910 and by bell in 1915. |
3. |
Based on the assumptions of Rankine’s theory, the soil mass is |
A. | stratified |
B. | submerged |
C. | homogeneous |
D. | all of the mentioned |
Answer» C. homogeneous | |
Explanation: according to the assumption of rankine’s theory, the soil mass is semi- infinite, homogeneous, dry and cohesion less. |
4. |
Which of the following cases for cohesion less backfill in Rankine’s theory is considered? |
A. | submerged backfill |
B. | moist backfill with no surcharge |
C. | backfill with sloping surface |
D. | all of the mentioned |
Answer» D. all of the mentioned | |
Explanation: in rankine’s theory the following cases of cohesionless backfill are considered |
5. |
The factor that is responsible for inclination of resultant pressure to the retaining wall is |
A. | frictional force |
B. | surcharge |
C. | earth pressure |
D. | weight of the wall |
Answer» A. frictional force | |
Explanation: the retaining walls are constructed of masonry or concrete, due to this the frictional force develops. the existence of the friction makes the resultant pressure inclined to the wall at an angle that approaches the frictional angle between the soil and the wall. |
6. |
If the sand filled behind the retaining wall with saturated water with water, then the possible lateral pressure is |
A. | lateral pressure due to submerged weight and lateral pressure due to water |
B. | lateral pressure due to retaining wall |
C. | none of the mentioned |
D. | all of the mentioned |
Answer» A. lateral pressure due to submerged weight and lateral pressure due to water | |
Explanation: the lateral pressure is made up of two components for wetted soil in back of the retaining wall: |
7. |
The earth pressure at rest exerted on a retaining structure can be calculated using |
A. | theory of plasticity |
B. | theory of elasticity |
C. | mohr’s theory of rupture |
D. | none of the mentioned |
Answer» B. theory of elasticity | |
Explanation: the earth pressure at rest, exerted on the back of the rigid, unyielding retaining structure, can be calculated using theory of elasticity. |
8. |
The expression for K0 as given by Jacky is |
A. | k0 = 1 – sin φ |
B. | k0 = sin φ |
C. | k0 = 1 – cos φ |
D. | k0 = 1 + sin φ |
Answer» A. k0 = 1 – sin φ | |
Explanation: k0 can be calculated by using the following equation as computed by jacky in 1944: |
9. |
What will be the coefficient of earth pressure at rest for a rigid retaining wall, If the backfill consists of cohesion less soil having φ = 26°? |
A. | 0.1295 |
B. | 0.6552 |
C. | 0.5616 |
D. | 0.7383 |
Answer» C. 0.5616 | |
Explanation: coefficient of earth pressure, k0 can be calculated using jacky’s formula: given: φ = 26° |
10. |
A force 2P is acting on the double transverse fillet weld. Leg of weld is h and length l. Determine the shear stress in a plane inclined at θ with horizontal. |
A. | psinθ(sinθ+cosθ)/hl |
B. | p(sinθ+cosθ)/hl |
C. | pcosθ(sinθ+cosθ)/hl |
D. | none of the listed |
Answer» A. psinθ(sinθ+cosθ)/hl | |
Explanation: f=psinθ and width=h/(sinθ+cosθ). |
11. |
Maximum shear stress in transverse fillet weld of leg h and length l is |
A. | p/hl |
B. | 1.21p/hl |
C. | p/1.21hl |
D. | none of the listed |
Answer» B. 1.21p/hl | |
Explanation: τ= psinθ(sinθ+cosθ)/hl, by maximising it θ=67.5’ and hence find corresponding τ. |
12. |
Hollow saddle key is superior to flat saddle key as far as power transmitting capability is concerned. |
A. | true |
B. | false |
Answer» B. false | |
Explanation: the resistance to slip in case of |
13. |
Saddle key is more suitable than sunk key for heavy duty applications. |
A. | true |
B. | false |
Answer» B. false | |
Explanation: in sunk key, relative motion is also prevented by shear resistance of sunk key and hence sunk key is recommended. |
14. |
The main advantage of sunk key is that it is a drive. |
A. | positive |
B. | negative |
C. | neutral |
D. | none of the listed |
Answer» A. positive | |
Explanation: sunk key is a positive drive and no slip occurs. |
15. |
Woodruff key permits movement b/w shaft and the hub. |
A. | axial |
B. | radial |
C. | eccentric |
D. | none of the listed |
Answer» B. radial | |
Explanation: woodruff key is a sunk key and doesn’t permit axial moment. |
16. |
Determine the length of kennedy key required to transmit 1200N-m and allowable shear in the key is 40N/mm². The diameter of shaft and width of key can be taken as 40mm and 10mm respectively. |
A. | 49mm |
B. | 36mm |
C. | 46mm |
D. | 53mm |
Answer» D. 53mm | |
Explanation: l=m/[dbτ√2]. |
17. |
Splines are keys. |
A. | true |
B. | false |
Answer» A. true | |
Explanation: splines are keys made with shafts. |
18. |
The prestressed concrete slab systems are ideally suited for |
A. | roofs |
B. | slabs |
C. | beam |
D. | column |
Answer» B. slabs | |
Explanation: prestressed concrete slabs systems are ideally suited for floor and roof construction of industrial buildings where the live loads to base supported are of a higher order and the uninterrupted floor space is desirable for which reason longer span between the supporting elements are required. |
19. |
The precast prestressed hollow core slabs, with or without topping is an important |
A. | floor panels |
B. | tendons |
C. | wall coatings |
D. | reinforcements |
Answer» A. floor panels | |
Explanation: prestressed pretensioned cored slabs with differ types of cavities are widely used as floor panels of civil and industrial buildings in erstwhile u.s.s.r graduck |
20. |
One way slabs may be supported across the entire width of the slab by means of |
A. | columns |
B. | piers |
C. | ridges |
D. | footings |
Answer» B. piers | |
Explanation: one way slabs may be |
21. |
The simple or continuous slabs are analyzed for |
A. | design foundation |
B. | design reinforcement |
C. | design moments |
D. | design slab |
Answer» C. design moments | |
Explanation: the simple or continuous slabs are analyzed for design moments by considering a unit width of the slab and the prestressing force and the eccentricity of the cable required at prominent sections to resist the dead and live load moments are determined and the spacing of the cables or wires fixed based on the availability of type of tendon. |
22. |
The design of a two-way-slab supported on all four sides involves the computation of |
A. | moments |
B. | cross sections |
C. | bending moment |
D. | deformations |
Answer» C. bending moment | |
Explanation: the design of a two way slab supported on all four sides involves the computation of bending moment in the principal directions of the slab and the slab may be supported on masonry walls or beams and mayor may not be continuous over the supports and transverse loads are resisted by the development of two way slab action, |
23. |
A simple prestressed flat slab is generally supported by a network of |
A. | beams |
B. | columns |
C. | spans |
D. | deflections |
Answer» B. columns | |
Explanation: a simple prestressed flat slab is generally supported by a network of columns without beams and prestressed in two perpendicular directions and the design of typical simple flat slab involves the analysis of moments in the two principal directions so that cables may be arranged to resist these moments and the slab is analyzed as one way slab and the total number of cables required to resist the moments in each of two principal directions are determined. |
24. |
The proportioning of tendons in design of prestressed concrete simple flat slab between the column and middle strips may be based on |
A. | moments |
B. | codes |
C. | deflections |
D. | loads |
Answer» B. codes | |
Explanation: the column strips being stiffer than the middle strips, a greater percentage of the tendons are housed in the column strips and the proportioning of the tendons between the column and middle strips may be based on the provisions of codes such as is:456 and bs:8110, where column strips share a higher proportion of total moment. |
25. |
The design principles of continuous flat slab floors are similar to |
A. | one way slab |
B. | two way slab |
C. | continuous |
D. | deformed |
Answer» B. two way slab | |
Explanation: the design of continuous flat slab floors are similar to those of two way reinforced concrete slabs and a strip of slab of unit width continuous over supports is analyzed as continuous beam and its prestressing results in secondary moments. |
26. |
What will be the design load for bridges and culverts on National Highway? |
A. | i.r.c. class-d loading |
B. | i.r.c. class-c loading |
C. | i.r.c. class-a loading |
D. | i.r.c. class-b loading |
Answer» C. i.r.c. class-a loading | |
Explanation: irc a body of professional highway engineers provides the following services: |
27. |
Hard, rough and durable granite stone ballast gauge, shall be used. |
A. | 100 mm |
B. | 20 mm |
C. | 1mm |
D. | 60mm |
Answer» D. 60mm | |
Explanation: ballast should not absorb water and should not be affected by weather action and shall be clean and free from dust, dirt, etc. ballast should be stacked 30 cm high on the levelled side-berm of the road in a continuous stack along the road having the section as required per metre length of the road. |
28. |
These are important roads within a district connecting areas of production with markets and connecting them with the State Highways & National Highways and are maintained by the State PWD? |
A. | state highway |
B. | national highway |
C. | district road |
D. | rural road |
Answer» C. district road | |
Explanation: district roads are sub-classified into – major district roads and other district roads. as per the classification of roads broadly the mdrs are to have a minimum |
29. |
What will be the maximum superrelevation in hills on Major District roads? |
A. | 4 in 30 |
B. | 1 in 10 |
C. | 1 in 4 |
D. | 1 in 60 |
Answer» B. 1 in 10 | |
Explanation: to counter-act the effect of centrifugal force and reduce the tendency of vehicle to overturn and to skid laterally outwards, pavement outer edge is raised with respect to inner edge. thus, providing a transverse slope is known as super elevation. it is represented by “ e ”. |
30. |
What will be the ruling gradient in hills on “Other district roads”? |
A. | 1 in 20 |
B. | 1 in 5 |
C. | 1 in 10 |
D. | 1 in 3 |
Answer» C. 1 in 10 | |
Explanation: ruling gradient (plural ruling gradients) (rail transport) the steepest uphill gradient in one direction on a section of railway line, which determines the load that can be pulled by one locomotive over that |
31. |
What will be the minimum visibility at vertical curves on National Highway? |
A. | 130 m |
B. | 200 m |
C. | 20 m |
D. | 100 m |
Answer» D. 100 m | |
Explanation: the length of a crest vertical curve is governed by visibility considerations. the minimum length is based on the stopping sight distance; the maximum length is based on the passing sight distance, and overtaking is allowed throughout its length. the object of the present paper is theoretical determination of the zone of overtaking visibility in a curve designed on a below-maximum basis. the analysis covers 2 cases: (a) overtaking vehicle inside oncoming vehicle outside the curve and (b) both vehicles outside the curve. the corresponding curve geometries were also considered. |
32. |
What will be the width of metalled surface single lane on Major District road? |
A. | 1.70 m |
B. | 3.70 m |
C. | 0.70 m |
D. | 10 m |
Answer» B. 3.70 m | |
Explanation: a single carriageway or undivided highway is a road with one, two or more lanes arranged within a single carriageway with no central reservation to separate opposing flows of traffic. |
33. |
Subgrade shall be well consolidated and compacted each with a camber of 1 in 60. |
A. | true |
B. | false |
Answer» A. true | |
Explanation: subgrades are commonly compacted before the construction of a road, pavement or railway track, and are sometimes stabilized by the addition of asphalt, lime, portland cement or other modifiers. the subgrade is the foundation of the pavement structure, on which the subbase is laid. |
34. |
8 cm. |
A. | true |
B. | false |
Answer» B. false | |
Explanation: inter coat shall be of stone ballast, or over burnt brick ballast of 12cm thick layer and consolidated and compacted by road roller to 8 cm. |
35. |
First coat of bituminous painting shall be with stone ballast no.3 and stone grit of 20 mm gauge at 220 kg of asphalt and 1.35 cu m of stone grit per 100 sq. m. |
A. | true |
B. | false |
Answer» B. false | |
Explanation: first coat of bituminous painting shall be with asphalt or road tar no.3 and stone grit of 20 mm gauge at 220 kg of asphalt and 1.35 cu m of stone grit per 100 sq. m. |
36. |
If subgrade is soft or weak, a thick sub- base of cheap and inferior materials well compacted should be used. |
A. | false |
B. | true |
Answer» B. true | |
Explanation: in transport engineering, subgrade is the native material underneath a constructed road, pavement or railway (us: railroad) track. it is also called formation level. the term can also refer to imported material that has been used to build an embankment. |
37. |
Laying and consolidation shall be done during dry season. |
A. | true |
B. | false |
Answer» B. false | |
Explanation: laying and consolidation shall be done during early rainy season, so that sufficient water is available for consolidation, and during the later part of the rains the ballast gets fully compacted. |
38. |
Stone grits used for 1st coat and 2nd surface painting may be precoated in advance with advance with bitumen. |
A. | true |
B. | false |
Answer» A. true | |
Explanation: precoating prevents separation and disintegration of grits and improves the life of the road. for precoating stone grits 12kg to 16 kg of asphalt or road tar per cu m of grit may be used. |
39. |
As soon as sufficient length of premix has been laid, rolling should be started with 2 to 4 tonne roller. |
A. | true |
B. | false |
Answer» B. false | |
Explanation: as soon as sufficient length of |
40. |
Which authority is responsible for national highway? |
A. | local governments and municipalities |
B. | panchayats, jry and pmgsy |
C. | public works department of state/union territory |
D. | ministry of road transport and highways |
Answer» D. ministry of road transport and highways | |
Explanation: the ministry of road transport and highways is a ministry of the government of india, is the apex body for formulation and administration of the rules, regulations and laws relating to road transport, and transport research, in order to increase the mobility and efficiency of the road transport system in india. road transport is a critical infrastructure for economic development of the country. it influences the pace, structure and pattern of development. in india, roads are used to transport over 60% of the total goods and 85% of passenger traffic. |
41. |
A structure that allows water to flow under a road, railroad, trail, or similar obstruction from one side to the other side is called as |
A. | drainage |
B. | bridges |
C. | tunnel |
D. | culverts |
Answer» D. culverts | |
Explanation: culverts are commonly used both as cross-drains for ditch relief and to pass water under a road at natural drainage and stream crossings. a culvert may be a bridge-like structure designed to allow vehicle or pedestrian traffic to cross over the waterway while allowing adequate passage for the water. |
42. |
A structure that carries water above land is known as an |
A. | aqueduct |
B. | aquedant |
C. | over surface |
D. | outland |
Answer» A. aqueduct | |
Explanation: bridges for conveying water, called aqueducts or water bridges are constructed to convey watercourses across gaps such as valleys or ravines. the term aqueduct may also be used to refer to the entire watercourse, as well as the bridge. |
43. |
If the span of crossing is greater than 12 feet (3.7 m), the structure is termed as bridge and otherwise is culvert. |
A. | true |
B. | false |
Answer» A. true | |
Explanation: a bridge is a structure built to span physical obstacles without closing the way underneath such as a body of water, valley, or road, for the purpose of providing passage over the obstacle. there are many different designs that each serve a particular purpose and apply to different situations. |
44. |
Culverts cannot be constructed of a variety of materials including cast-in-place or precast concrete. |
A. | true |
B. | false |
C. | topic 2.3 rc solid slab bridge - steel foot-over bridgedesign and drawing. |
Answer» B. false | |
Explanation: culverts can be constructed of a variety of materials including cast-in-place or precast concrete (reinforced or non- reinforced), galvanized steel, aluminium, or plastic, typically high-density polyethylene. two or more materials may be combined to form composite structures. for example, |
45. |
Construction or installation at a culvert site generally results in disturbance of the site soil. |
A. | true |
B. | false |
Answer» A. true | |
Explanation: construction or installation at a culvert site generally results in disturbance of the site soil, stream banks, or streambed, and can result in the occurrence of unwanted problems such as scour holes or slumping of banks adjacent to the culvert structure. |
46. |
Box culverts can be defined as a passage for water over a natural ground having a deck slab over it as path way for vehicles. |
A. | true |
B. | false |
Answer» B. false | |
Explanation: slab culvert- a passage for water over a natural ground having a deck slab over it as path way for vehicles. |
47. |
An culvert is normally a low profile culvert. It allows them to be installed without disturbing the causeway as it will span over the entire drainage width. |
A. | box |
B. | rectangle |
C. | arch |
D. | circular |
Answer» C. arch | |
Explanation: they are normally made of metal, stone masonry or rcc. they are installed easily, and you don’t need to use expensive water diversion structures to install it. common shapes include semicircular arch, elliptical arch, and concrete box culverts. |
48. |
Prestressed concrete although it is water tight, it is not |
A. | gas tight |
B. | liquid tight |
C. | vapour tight |
D. | material tight |
Answer» A. gas tight | |
Explanation: tanks have been built for storing liquid oxygen at 230 degrees with capacities up to one million liters and prestressed concrete, although water tight, it is not gas tight were vapours under pressure are to be stored and in such cases, a thin membrane linear of steel provides rigidity and increases the steel tensile capacity of the pretressed concrete. |
49. |
In the case of large tanks, the base slabs is subdivided by |
A. | water |
B. | joints |
C. | scale |
D. | lines |
Answer» B. joints | |
Explanation: in the case of large tanks, the bars slab is subdivided by joints which are sealed by water stops and the floor slabs are cast in panels and according to the british standard the maximum length of side of such panels should not exceed 7.5m for reinforcement slabs and 6m for nominal slabs and they may be formed out of 50 to 80mm thick gunite reinforced with 0.5 percent of steel distributed in each of the principal directions. |
50. |
The nominal reinforcement provided for floor slabs stipulated by Indian standard code is not less than? |
A. | 0.5 |
B. | 0.7 |
C. | 0.15 |
D. | 0.8 |
Answer» C. 0.15 | |
Explanation: the indian standard code stipulates the floor slabs of tanks resting on the ground should be provided with a nominal reinforcement of not less than 0.15 percent and the floor slabs should be cast in panels of area not more than 4.5m2 with contraction or expansion joints and these slabs are to be cast over a layer of concrete not less than 75mm thick with a sliding layer of bitumen paper |
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