Civil Engineering Questions and Answers Part 4
Support civil
Q1 The split tensile strength of M 15 grade concrete when expressed percentage of its compressive strength is
option
1) 10 to 20 %
2)15 to 20 %
3) 20 to 25 %
4) 25 to 30 %
Q2 The approximate ratio between the strength of cement concrete at 7 days and at 28 days is
option
1)3/4
2)2/3
3)1/2
4)1/3
Q3 Modulus of elasticity of M25 concrete as determined by formula of IS :456 is
option
1) 124500 MPa
2) 90125 MPa
3) 28500 MPa
4) 16667 MPa
Q4 General shrinkage in cement concrete is caused by
option
1)carbonation
2) stressed due to external load
3)drying with starting with a stiff consistency
4) drying with starting with a wetter consistency
Q5 The optimum number of revolution over which concrete is to be mixed in a mixer machine is
option
1)10
2)20
3)50
4)100
Q6 As per IS code of practice ,concrete should be cured at
option
1)5 ℃
2)10 ℃
3) 27 ℃
4) 40 ℃
Q7 The ratio of direct tensile strength to that of modulus of rupture of concrete is
option
1) .25
2).5
3).75
4)1.0
Q8 Which one of the following aggregate gives maximum strength in concrete ?
option
1)Rounded aggregate
2) Elongated aggregate
3) Flakey aggregate
4) Cubical
Q9 Which of the following types concrete is most suitable in extreme cold climates
option
1)Air entrained concrete
2) Ready mix concrete
3) vacuum concrete
4) coarse concrete
Q10 What is the range of fineness modulus of sand which is least suitable for making a good concrete
option
1) 3.5 4.5
2) 2.9  3.2
3) 2.6 2.9
4) 2.2 2.6
answer
1)15 to 20 %
2)2/3
3)28500 MPa
4)drying with starting with a wetter consistency
5)20
6) 27 ℃
7).5
8)Cubical
9)Air entrained concrete
10) 3.5 4.5
option
1) 10 to 20 %
2)15 to 20 %
3) 20 to 25 %
4) 25 to 30 %
Q2 The approximate ratio between the strength of cement concrete at 7 days and at 28 days is
option
1)3/4
2)2/3
3)1/2
4)1/3
Q3 Modulus of elasticity of M25 concrete as determined by formula of IS :456 is
option
1) 124500 MPa
2) 90125 MPa
3) 28500 MPa
4) 16667 MPa
Q4 General shrinkage in cement concrete is caused by
option
1)carbonation
2) stressed due to external load
3)drying with starting with a stiff consistency
4) drying with starting with a wetter consistency
Q5 The optimum number of revolution over which concrete is to be mixed in a mixer machine is
option
1)10
2)20
3)50
4)100
Q6 As per IS code of practice ,concrete should be cured at
option
1)5 ℃
2)10 ℃
3) 27 ℃
4) 40 ℃
Q7 The ratio of direct tensile strength to that of modulus of rupture of concrete is
option
1) .25
2).5
3).75
4)1.0
Q8 Which one of the following aggregate gives maximum strength in concrete ?
option
1)Rounded aggregate
2) Elongated aggregate
3) Flakey aggregate
4) Cubical
Q9 Which of the following types concrete is most suitable in extreme cold climates
option
1)Air entrained concrete
2) Ready mix concrete
3) vacuum concrete
4) coarse concrete
Q10 What is the range of fineness modulus of sand which is least suitable for making a good concrete
option
1) 3.5 4.5
2) 2.9  3.2
3) 2.6 2.9
4) 2.2 2.6
answer
1)15 to 20 %
2)2/3
3)28500 MPa
4)drying with starting with a wetter consistency
5)20
6) 27 ℃
7).5
8)Cubical
9)Air entrained concrete
10) 3.5 4.5
June 22, 2018
Building material
,
knowledge
Civil Engineering Interview Questions
Support civil
Q1 . What is civil engineering ?
Q2 What is work of a civil engineer ?
Q3 Define various authorities on a construction site ?
Q4 What is least cover provide for different Rcc members?
Q5 What is function of column in a building ?
Q6 What is cement sand and aggregate ratio in various concrete mix?
Q7 What do mean by honeycomb in concrete ?
Q8 Will water damage concrete ?
Q9 What is initial and final setting time of ideal mix concrete ?
Q10 What are the common method of curing ?
Q11 Write the formula for the weight of steel ?
Q12 What do you know about TMT ?
Q13 What is difference between working stress method and limit state method ?
Q14 Name the field test required for quality check of cement ?
Q15 Name the types of foundation used in construction ?
Q16 Name the various types of cement
Q 17 What do you understand by guniting ?
Q18 What are the various test for bricks ?
Q19 what do you under stand by void ratio ?
Q20 what is workabiity how to test it ?
Q2 What is work of a civil engineer ?
Q3 Define various authorities on a construction site ?
Q4 What is least cover provide for different Rcc members?
Q5 What is function of column in a building ?
Q6 What is cement sand and aggregate ratio in various concrete mix?
Q7 What do mean by honeycomb in concrete ?
Q8 Will water damage concrete ?
Q9 What is initial and final setting time of ideal mix concrete ?
Q10 What are the common method of curing ?
Q11 Write the formula for the weight of steel ?
Q12 What do you know about TMT ?
Q13 What is difference between working stress method and limit state method ?
Q14 Name the field test required for quality check of cement ?
Q15 Name the types of foundation used in construction ?
Q16 Name the various types of cement
Q 17 What do you understand by guniting ?
Q18 What are the various test for bricks ?
Q19 what do you under stand by void ratio ?
Q20 what is workabiity how to test it ?
June 22, 2018
knowledge
Civil Engineering Questions and Answers Part 3
Support civil
Q1 . If 'p' is the standard consistency of cement ,the amount of the water used in conducting the initial setting time test on cement is :
option
1) .65 p
2) .85p
3) .6p
4).8p
Q2 . Gypsum is used as an admixture in cement grouts for
option
1)accelerating the setting time
2)retarding the setting time
3)increasing the plasticity
4)reducing the grout shrinkage
Q3.Before testing setting time of cement one should test for
option
1) soundness
2)strength
3)fineness
4)consistency
Q4 The fineness of cement is tested by
option
1) aircontent method
2) airpermeability method
3) Le chatelier apparatus
4)Vicat's apparatus
Q5 For marine works ,the best suited cement is
option
1)low heat portland cement
2)rapid hardening cement
3)ordinary portland cement
4)blast furnace slag cement
Q6 Ultimate strength of cement is influenced by which one of the following ?
option
1)Tricalcium silicate
2)Dicalcium silicate
3)Tricalcium aluminate
4)Tetracalcium aluminoferrite
Q7 The specific gravity of commonly available ordinary portland cement is
option
1)4.92
2)3.15
3)2.05
4)1.83
Q8 A quick setting cement has an initial setting time is about
option
1) 50 minutes
2)40 minutes
3)15 minutes
4)5 minutes
Q9 In cements ,generally the increase in strength during a period of 14 days to 28 days is primarily due to
option
1)C3A
2)C2S
3)C3S
4)C4AF
Q10 Soundness test of cement is carried out of determine its
option
1)alumina content
2)iron oxide content
3)free lime content
4) durability under sea water
Answer
1 .85p
2 retarding the setting time
3 consistency
6 Dicalcium silicate
7 3.15
8 5 minutes
9 C3S
1o free lime content
option
1) .65 p
2) .85p
3) .6p
4).8p
Q2 . Gypsum is used as an admixture in cement grouts for
option
1)accelerating the setting time
2)retarding the setting time
3)increasing the plasticity
4)reducing the grout shrinkage
Q3.Before testing setting time of cement one should test for
option
1) soundness
2)strength
3)fineness
4)consistency
Q4 The fineness of cement is tested by
option
1) aircontent method
2) airpermeability method
3) Le chatelier apparatus
4)Vicat's apparatus
Q5 For marine works ,the best suited cement is
option
1)low heat portland cement
2)rapid hardening cement
3)ordinary portland cement
4)blast furnace slag cement
Q6 Ultimate strength of cement is influenced by which one of the following ?
option
1)Tricalcium silicate
2)Dicalcium silicate
3)Tricalcium aluminate
4)Tetracalcium aluminoferrite
Q7 The specific gravity of commonly available ordinary portland cement is
option
1)4.92
2)3.15
3)2.05
4)1.83
Q8 A quick setting cement has an initial setting time is about
option
1) 50 minutes
2)40 minutes
3)15 minutes
4)5 minutes
Q9 In cements ,generally the increase in strength during a period of 14 days to 28 days is primarily due to
option
1)C3A
2)C2S
3)C3S
4)C4AF
Q10 Soundness test of cement is carried out of determine its
option
1)alumina content
2)iron oxide content
3)free lime content
4) durability under sea water
Answer
1 .85p
2 retarding the setting time
3 consistency
4 airpermeability method
5 blast furnace slag cement6 Dicalcium silicate
7 3.15
8 5 minutes
9 C3S
1o free lime content
June 22, 2018
Building material
,
knowledge
Local Attraction
Support civil
Local attraction is the attraction of magnetic needle to a local magnetic field other than earth's magnetic field.
It is caused by any iron material in the vicinity of compass station .Example Steel vehicle ,iron pipes , Transmission lines ,iron ore, arrow etc.
Under the influence of local magnetic field ,magnetic needle will deviate from magnetic meridian which results in wrong magnetic bearing of Traverse line.
To determine local attraction it is mandatory to take fore bearing and back bearing of each traverse line .
If difference between fore bearing and back bearing is not equal to 180▪️ then local attraction can be at ;
Either of the station ( station A or B )
Both the station ( station A and B both)
If difference between Fore Bearing and Back Bearing Exactly differs by 180▪️ then we assume that both the station ,i.e. A and B are Free from Local attraction .
Correction For Local Attraction
Method 1 :Correction For L.A at each station
In this method L.A. at each station is found out and then required correction is applied to the observed bearings .
Steps :
1 . Observe a line whose FB and BB exactly differs by 180▪️
2. End station of such line are free from L.A. and all the bearings observed from such stations are free from L.A.
3. With the help of correct bearing of any line and correction for local attraction correct Fore bearing of next line can be determined .
4. This methods is suitable for open traverse .
5. This method will fail for closed traverse when instrument errors are present ,i.e. theoretical sum is not matching with actual sum .
Method 2 :By Included angles
This method is suitable for closed traverse to find out correct bearings . As all the bearings taken at a station are affected equally and in same direction ,therefore is no effect of local attraction on included angles
Steps :
Locate a line whose FB and BB differ exactly by 180▪️
Determine included Angles.
With the help of correct bearing of any line and included angles, we can determine bearing of all the other lines .
It is caused by any iron material in the vicinity of compass station .Example Steel vehicle ,iron pipes , Transmission lines ,iron ore, arrow etc.
To determine local attraction it is mandatory to take fore bearing and back bearing of each traverse line .
If difference between fore bearing and back bearing is not equal to 180▪️ then local attraction can be at ;
Either of the station ( station A or B )
Both the station ( station A and B both)
If difference between Fore Bearing and Back Bearing Exactly differs by 180▪️ then we assume that both the station ,i.e. A and B are Free from Local attraction .
Correction For Local Attraction
Method 1 :Correction For L.A at each station
In this method L.A. at each station is found out and then required correction is applied to the observed bearings .
Steps :
1 . Observe a line whose FB and BB exactly differs by 180▪️
2. End station of such line are free from L.A. and all the bearings observed from such stations are free from L.A.
3. With the help of correct bearing of any line and correction for local attraction correct Fore bearing of next line can be determined .
4. This methods is suitable for open traverse .
5. This method will fail for closed traverse when instrument errors are present ,i.e. theoretical sum is not matching with actual sum .
Method 2 :By Included angles
This method is suitable for closed traverse to find out correct bearings . As all the bearings taken at a station are affected equally and in same direction ,therefore is no effect of local attraction on included angles
Steps :
Locate a line whose FB and BB differ exactly by 180▪️
Determine included Angles.
With the help of correct bearing of any line and included angles, we can determine bearing of all the other lines .
June 21, 2018
Survey
Civil Engineering Questions and Answers Part 2
Support civil
Q1 In geodetic surveying, sum of angles (degree) of a spherical triangle should not be greater than Options
1) 180
2) 270
3) 360
4) 540
Correct Answer:/>540
Q2 Calculate the number of division of the main scale that is equal to the 8 divisions of the extended vernier. Options:
1) 7
2) 9
3) 15
4) 16
Correct Answer: 15
Q3 An area of a field is 250 square centimetres from a shrunk map having shrunk factor of 0.9. Calculate the original area (square metres) on the field, if the original scale of the map is 1 cm = 50 m. Options:
1) 309
2) 625000
3) 694444
4) 771450
Correct Answer: 771450
Q4 The length of the chain is equal to _____. Options:
1) centre to centre distance between the last end of links
2) Sum of reduced level of benchmark and foresight
3) Sum of reduced level of benchmark and backsight
4) Sum of reduced level of benchmark and intermediate sight
Correct Answer: centre to centre distance between the last end of links
Q5 Calculate the error (mm) in the linear measurement of offset, if the length of the offset is 80 m, then the accuracy in the measurement of the length is 1 cm in 60 m.
Options:
1) 0.075
2) 1.33
3) 7.5
4) 13.3
Correct Answer: 13.3
Q6 What should be the height (m) of a lighthouse, so that it can be visible from a distance of 3 km? Options:
1) 0.101
2) 0.605
3) 0.673
4) 0.707
Correct Answer: 0.605
Q7  Calculate the apex distance, if the deflection angle is 60 degree and the degree of curve is 8 degree.
Options:
1) 33.26
2) 124.13
3) 215
4) 262.8
Correct Answer: 33.26
Q8 Which of the following contour represents either hills or ponds?
Options:
1) Contour having concentric circles
2) Closely placed contour
3) Distant contour
4) Parallel contour
Correct Answer: Contour having concentric circles
Q9 Which of the soil possesses zero plasticity index?
Options:
1) Clay
2) Clayey silt
3) Sand
4) Silty
Correct Answer: Sand
Q10 Which of the following roller is used to compact the coarsegrained soil?
Options:
1) Drum roller
2) Pneumatic tyred roller
3) Tamping roller
4) Vibratory roller
Correct Answer: Vibratory roller
Q 11 The internal angle of friction of a soil is 30 degree. What is the active earth pressure coefficient for the soil mass?
Options:
1) 0.005
2) 0.025
3) 0.333
4) 0.555
Correct Answer: 0.333
Q12 Which of the following is measured in the poise?
Options: 1) Dynamic viscosity
2) Kinematic viscosity
3) Velocity of flow
4) Discharge
Correct Answer: Dynamic viscosity
Q13 Which of the following is measured with the help of hot wire anemometer?
Options:
1) Velocity coefficient
2) Surface tension
3) Viscosity
4) Velocity of fluid
Correct Answer: Velocity of fluid
Q14 A sphere of diameter 30 cm is moving with a uniform velocity of 4 m/s. The dynamic viscosity and specific gravity of the liquid is given as 0.8 poises and 0.9 respectively. What is the value of Reynolds number?
Options:
1) 135
2) 10000
3) 13500
4) 15000
Correct Answer: 13500
Q15 The sphere of diameter 0.02 m falls in a fluid of kinematic viscosity of 10 stokes with the terminal velocity of 0.02 m/s. What is the value of the coefficient of drag on the falling sphere?
Options:
1) 40
2) 60
3) 80
4) 100
Correct Answer: 60
Q16 What is the depth of the flow (m) in a circular channel of diameter 2.0 m for the maximum velocity?
Options:
1) 1
2) 1.62
3) 2
4) 2.83
Correct Answer: 1.62
Q17 The water flows fully through the rectangular channel of lateral dimensions 4 m x 3 m. What is the velocity of flow (m/s) through the channel, if the slope of energy line and Chezy’s constant is given as 0.0006 and 90 respectively?
Options:
1) 1.5
2) 2.4
3) 4.6
4) 5
Correct Answer: 2.4
Q18 Which of the following is the dimensionless parameter?
Options:
1) Linear velocity
2) Gravity force
3) Reynolds number
4) Viscosity
Correct Answer: Reynolds number
Q 19 Which ONE is the best method of the reclamation of the acidic soil?
Options:
1) Leaching
2) Provision of good drainage
3) Use gypsum as a soil amendment
4) Use limestone as a soil amendment
Correct Answer: Use limestone as a soil amendment
Q20 Calculate the evaporation (mm) from a pond, if the pan evaporation is 45 mm. The pan coefficient is 0.70.
Options:
1) 13.5
2) 19.28
3) 31.5
4) 64.28
Correct Answer: 31.5
Q21 The ruling design speed on a curve is 100 km/h and the super elevation on the curve is 7%. Calculate the ruling design radius (m) of the curve. Take coefficient of the lateral friction as 0.15
Options:
1) 129
2) 189
3) 358
4) 1668
Correct Answer: 358
Q22 Which of the following is the CORRECT order for increasing width of a railway gauge? Options: 1) Broad gauge < light gauge < narrow gauge < metre gauge
2) Broad gauge < metre gauge < light gauge < narrow gauge
3) Light gauge < narrow gauge < metre gauge < broad gauge
4) Narrow gauge < light gauge < broad gauge < metre gauge
Correct Answer: Light gauge < narrow gauge < metre gauge < broad gauge
Q23 Which of the following method is used to forecast the population of old and very large city?
Options:
1) Arithmetical increase method
2) Geometric progression method
3) Graphical method
4) Logistic curve method
Correct Answer: Arithmetical increase method
Q24 The strength of a riveted lap joint is equal to its A. shearing strength B. bearing strength C. tearing strength
Options:
1) Only A
2) Only B
3) Only C
4) Least of A, B and C
Correct Answer: Least of A, B and C
Q25 Maximum permissible slenderness ratio of compressive members which carry dead and superimposed load is
Options:
1) 350
2) 250
3) 180
4) 80
Correct Answer: 180
Q26 When plates are exposed to weather, tacking rivets are provided at a pitch in line not exceeding
Options:
1) 8 t
2) 16 t
3) 24 t
4) 32 t
Correct Answer: 16 t
Q28 In double lacing, the thickness 't' of flat lacing is
Options:
1) t is less than 1/40th length between inner end rivets t
2) t is less than 1/50th length between inner end rivets t
3) t is less than 1/60th length between inner end rivets t
4) t is less than 1/70th length between inner end rivets t
Correct Answer: t is less than 1/60th length between inner end rivets t
Q29 Column footing is provided
Options:
1) to spread the column load over a larger area
2) to ensure that intensity of bearing pressure between the column footing and soil does not exceed permissible bearing capacity of the soil
3) to distribute the column load over soil through the column footing
4) All option are correct
Correct Answer: All option are correct
Q30 In a truss girder of a bridge, a diagonal consists of mild steel flat 400 I.S.F. and carries a pull of 80 tones. If the gross diameter of the rivet is 26 mm, the number of rivets required in the splice is
Options:
1) 6
2) 7
3) 8
4) 9
Correct Answer: 8
1) 180
2) 270
3) 360
4) 540
Correct Answer:/>540
Q2 Calculate the number of division of the main scale that is equal to the 8 divisions of the extended vernier. Options:
1) 7
2) 9
3) 15
4) 16
Correct Answer: 15
Q3 An area of a field is 250 square centimetres from a shrunk map having shrunk factor of 0.9. Calculate the original area (square metres) on the field, if the original scale of the map is 1 cm = 50 m. Options:
1) 309
2) 625000
3) 694444
4) 771450
Correct Answer: 771450
Q4 The length of the chain is equal to _____. Options:
1) centre to centre distance between the last end of links
2) Sum of reduced level of benchmark and foresight
3) Sum of reduced level of benchmark and backsight
4) Sum of reduced level of benchmark and intermediate sight
Correct Answer: centre to centre distance between the last end of links
Q5 Calculate the error (mm) in the linear measurement of offset, if the length of the offset is 80 m, then the accuracy in the measurement of the length is 1 cm in 60 m.
Options:
1) 0.075
2) 1.33
3) 7.5
4) 13.3
Correct Answer: 13.3
Q6 What should be the height (m) of a lighthouse, so that it can be visible from a distance of 3 km? Options:
1) 0.101
2) 0.605
3) 0.673
4) 0.707
Correct Answer: 0.605
Q7  Calculate the apex distance, if the deflection angle is 60 degree and the degree of curve is 8 degree.
Options:
1) 33.26
2) 124.13
3) 215
4) 262.8
Correct Answer: 33.26
Q8 Which of the following contour represents either hills or ponds?
Options:
1) Contour having concentric circles
2) Closely placed contour
3) Distant contour
4) Parallel contour
Correct Answer: Contour having concentric circles
Q9 Which of the soil possesses zero plasticity index?
Options:
1) Clay
2) Clayey silt
3) Sand
4) Silty
Correct Answer: Sand
Q10 Which of the following roller is used to compact the coarsegrained soil?
Options:
1) Drum roller
2) Pneumatic tyred roller
3) Tamping roller
4) Vibratory roller
Correct Answer: Vibratory roller
Q 11 The internal angle of friction of a soil is 30 degree. What is the active earth pressure coefficient for the soil mass?
Options:
1) 0.005
2) 0.025
3) 0.333
4) 0.555
Correct Answer: 0.333
Q12 Which of the following is measured in the poise?
Options: 1) Dynamic viscosity
2) Kinematic viscosity
3) Velocity of flow
4) Discharge
Correct Answer: Dynamic viscosity
Q13 Which of the following is measured with the help of hot wire anemometer?
Options:
1) Velocity coefficient
2) Surface tension
3) Viscosity
4) Velocity of fluid
Correct Answer: Velocity of fluid
Q14 A sphere of diameter 30 cm is moving with a uniform velocity of 4 m/s. The dynamic viscosity and specific gravity of the liquid is given as 0.8 poises and 0.9 respectively. What is the value of Reynolds number?
Options:
1) 135
2) 10000
3) 13500
4) 15000
Correct Answer: 13500
Q15 The sphere of diameter 0.02 m falls in a fluid of kinematic viscosity of 10 stokes with the terminal velocity of 0.02 m/s. What is the value of the coefficient of drag on the falling sphere?
Options:
1) 40
2) 60
3) 80
4) 100
Correct Answer: 60
Q16 What is the depth of the flow (m) in a circular channel of diameter 2.0 m for the maximum velocity?
Options:
1) 1
2) 1.62
3) 2
4) 2.83
Correct Answer: 1.62
Q17 The water flows fully through the rectangular channel of lateral dimensions 4 m x 3 m. What is the velocity of flow (m/s) through the channel, if the slope of energy line and Chezy’s constant is given as 0.0006 and 90 respectively?
Options:
1) 1.5
2) 2.4
3) 4.6
4) 5
Correct Answer: 2.4
Q18 Which of the following is the dimensionless parameter?
Options:
1) Linear velocity
2) Gravity force
3) Reynolds number
4) Viscosity
Correct Answer: Reynolds number
Q 19 Which ONE is the best method of the reclamation of the acidic soil?
Options:
1) Leaching
2) Provision of good drainage
3) Use gypsum as a soil amendment
4) Use limestone as a soil amendment
Correct Answer: Use limestone as a soil amendment
Q20 Calculate the evaporation (mm) from a pond, if the pan evaporation is 45 mm. The pan coefficient is 0.70.
Options:
1) 13.5
2) 19.28
3) 31.5
4) 64.28
Correct Answer: 31.5
Q21 The ruling design speed on a curve is 100 km/h and the super elevation on the curve is 7%. Calculate the ruling design radius (m) of the curve. Take coefficient of the lateral friction as 0.15
Options:
1) 129
2) 189
3) 358
4) 1668
Correct Answer: 358
Q22 Which of the following is the CORRECT order for increasing width of a railway gauge? Options: 1) Broad gauge < light gauge < narrow gauge < metre gauge
2) Broad gauge < metre gauge < light gauge < narrow gauge
3) Light gauge < narrow gauge < metre gauge < broad gauge
4) Narrow gauge < light gauge < broad gauge < metre gauge
Correct Answer: Light gauge < narrow gauge < metre gauge < broad gauge
Q23 Which of the following method is used to forecast the population of old and very large city?
Options:
1) Arithmetical increase method
2) Geometric progression method
3) Graphical method
4) Logistic curve method
Correct Answer: Arithmetical increase method
Q24 The strength of a riveted lap joint is equal to its A. shearing strength B. bearing strength C. tearing strength
Options:
1) Only A
2) Only B
3) Only C
4) Least of A, B and C
Correct Answer: Least of A, B and C
Q25 Maximum permissible slenderness ratio of compressive members which carry dead and superimposed load is
Options:
1) 350
2) 250
3) 180
4) 80
Correct Answer: 180
Q26 When plates are exposed to weather, tacking rivets are provided at a pitch in line not exceeding
Options:
1) 8 t
2) 16 t
3) 24 t
4) 32 t
Correct Answer: 16 t
Q28 In double lacing, the thickness 't' of flat lacing is
Options:
1) t is less than 1/40th length between inner end rivets t
2) t is less than 1/50th length between inner end rivets t
3) t is less than 1/60th length between inner end rivets t
4) t is less than 1/70th length between inner end rivets t
Correct Answer: t is less than 1/60th length between inner end rivets t
Q29 Column footing is provided
Options:
1) to spread the column load over a larger area
2) to ensure that intensity of bearing pressure between the column footing and soil does not exceed permissible bearing capacity of the soil
3) to distribute the column load over soil through the column footing
4) All option are correct
Correct Answer: All option are correct
Q30 In a truss girder of a bridge, a diagonal consists of mild steel flat 400 I.S.F. and carries a pull of 80 tones. If the gross diameter of the rivet is 26 mm, the number of rivets required in the splice is
Options:
1) 6
2) 7
3) 8
Correct Answer: 8
June 21, 2018
knowledge
civil engineering objective question answer
Support civil
Options:
1) Shale and mica are metamorphic rocks.
2) Quartz is igneous rock.
3) Quartz is metamorphic rock.
4) Quartz and mica are only minerals
Correct Answer: Quartz and mica are only minerals
Which of the following possess more ability to resist fire?
Options:
1) Compact sandstone
2) Quartz
3) Red marble
4) Shale
Correct Answer: Compact sandstone
The strength of any timber is highest in direction of _____
Options:
1) an angle of 60 degree to grains
2) an angle of 0 degree to grains
3) an angle of 90 degree to grains
4) an angle of 120 degree to grains
Correct Answer: an angle of 0 degree to grains
Which of the following represents the average life (years) of the high durable timber?
Options:
1) Less than 3
2) 3 to 6
3) 6 to 10
4) More than 10
Correct Answer: More than 10
Which of the following is the most important characteristic of the alumina in the brick earth
Options:
1) Maintain plasticity
2) Increase strength of bricks
3) To manufacture impermeable bricks
4) Reduce wrapping when heated
Correct Answer: Maintain plasticity
Which of the following property of ordinary Portland cement is improved by the pozzolana?
Options:
1) Bleeding
2) Heat of hydration
3) Permeability
4) Shrinkage
Correct Answer: Permeability
Which of the following quantity is measured using a Planimeter?
Options:
1) Area
2) Bar diameter
3) Volume
4) Weight
Correct Answer: Area
Which ONE is the best method of the reclamation of the acidic soil?
Options:
1) Leaching
2) Provision of good drainage
3) Use gypsum as a soil amendment
4) Use limestone as a soil amendment
Correct Answer: Use limestone as a soil amendment
Which of the following is the CORRECT order for increasing width of a railway gauge?
Options:
1) Broad gauge < light gauge < narrow gauge < metre gauge
2) Broad gauge < metre gauge < light gauge < narrow gauge
3) Light gauge < narrow gauge < metre gauge < broad gauge
4) Narrow gauge < light gauge < broad gauge < metre gauge
Correct Answer: Light gauge < narrow gauge < metre gauge < broad gauge
June 20, 2018
knowledge
Boundary Layer Theory
Support civil
When a real fluid flows over a solid body ,the fluid particles at the surface of the body flow with the same velocity as that of the surface of the body flow with the same velocity as that of the surface to satisfy no slip condition so the relative velocity of the fluid particles at the surface of the body is zero .
Away from the solid body ,transverse direction the velocity of fluid particle increase gradually thus velocity gradient exist in the region close due to boundary due to velocity gradient viscous stress (て=μdu/dy) exist in this region this narrow region's known as boundary .
As we move away from the surface there is a development of velocity in the traverse direction
of the flow therefore slowly viscous shear stress are decreasing and the velocity are increasing and after traveling a distance in transverse direction almost viscous shear stress are closed to zero .And the velocity is almost constant .
Watch video
credit cfdsupport.com 
As we move away from the surface there is a development of velocity in the traverse direction
of the flow therefore slowly viscous shear stress are decreasing and the velocity are increasing and after traveling a distance in transverse direction almost viscous shear stress are closed to zero .And the velocity is almost constant .
Watch video
credit : nptel you tube
June 20, 2018
fluid mechanics
,
Video
Subscribe to:
Posts
(
Atom
)

1 . Larsen and Toubro Establish : 1938 in Bombay by two Danish Engineer. Founder : Henning Holck and Soren Kristian Toubro CEO An...

Bihar State Power (Holding) Company Limited (BSPHCL) has announced more than 175 vacancies for the post of Junior Civil Engineer . Las...

It is the most common method used to find the workability of the concrete in the field and in laboratory .Due to the ease of its performan...