## Civil Engineering MCQs1) Mach number is defined as - The ratio of a mass number to weight
- The ratio of characteristic velocity to velocity of sound
- The ratio of force to velocity
- The ratio of friction to acceleration
Where, M = Mach number C = speed of an object a = Velocity of the sound in air or any fluidic medium therefore, 2) If gram crop has a kor period of 24 days and kor depth of 16 cm, find the duty of the gram - 1866 ha/cumec
- 2036 ha/cumec
- 1296 ha/cumec
- 882 ha/cumec
Given; Kor period = 24 days Kor depth = 16 cm We know that, Where, B = Kor period = 24 days a = Kor depth = 16 cm therefore, 3) 1 litre of sewage, when enabled to settle for 60 minutes, gives a sludge volume of 36 cm3. If the dry weight of this sludge is 6 grams, find its sludge volume index? - 12
- 10
- 6
- 14
Given; Settled sludge volume = 36 cm The dry weight of this sludge =6 grams We know that, 4) In an irrigation project, in a specific year, 70% and 40% of the cultivable command area in Rabi and Kharif, respectively, remained without water and the rest of the area got irrigation water. Find the intensity of irrigation in that year for the project - 60 %
- 70 %
- 80 %
- 90 %
Given; Area under Kharif crop = 100 - 40 = 60 Area under Rabi crop = 100 - 70 = 30 We know that, Intensity of irrigation = Area under kharif crop + Area under Rabi crop = 60 + 30 = 90 % 5) The plan of a map was photocopied to a reduced size such that a line originally 300 mm measurer 280 mm, the original scale of the plan was 1: 1200. Find the revised scale?
Given; Measured length = 280 Original length = 300 Original scale = 1:1200 We know that, 6) The width of the expansion joint gap is 3 cm in a cement concrete pavement. Find the spacing between the expansion joint for a maximum rise in temperature of 40 - 67.6 m
- 37.5 m
- 47.9 m
- 97.8 m
7) The PCU for motor cycle on urban road is - 1
- 0.5
- 3
- 0.2
8) The number of revolution of a current meter is 60 seconds were found to be 18 and 40, corresponding to the velocity of 0.5 and 0.6 m/s, respectively. What velocity would be indicated by 80 revolutions of the current meter in two minutes? - 0.78
- 0.98
- 0.38
- 0.58
Velocity for current meter V = a Ns + b In first case, V = a Ns + b 0.5 = a × 18 + b In second case, V = a Ns + b 0.6 = a × 40 + b From case 1 and 2 We get, a = 0.0045 b = 0.42 For 80 revoutions Number of revolutions for 60 seconds Velocity ( V ) = a Ns + b V = 0.0045 = 0.78 9) In duty (D) is 1800 hectare/cemec and base period (B) is 150 days for an irrigated crop; find the value ∆ in a meter? - 0.22
- 0.92
- 0.72
- 0.32
We know that, Duty (D) = 1800 hectare/cemec B = 150 days 10) The surveying method used to determine additional details such as boundaries of fields is called. - Rural surveying
- Urban surveying
- Cadastral surveying
- Isolated surveying
11) The beam is a structural member predominantly subjected to - Tensile strength
- Coaxial forces
- Transverse loads
- Magnetic moment
12) Find the tensile stress of a steel rod made up of mild steel of 15 mm diameter with a load of 10 ton - 0.88 ton/mm
^{2} - 0.579 ton/mm
^{2} - 0.324 ton/mm
^{2} - 0.067 ton/mm
^{2}
Given; Diameter = 20 mm Load = 10 ton We know that, 13) Rankine's Gorden formula is used to calculate the buckling load of the column. - Rectangular column
- Medium column
- Square column
- Long column
14) The procedure of implementing cement mortar under pressure through a nozzle is called. - Soffit
- Guniting
- Balusters
- Tread
15) If the undistributed strength of a soil sample is 70 units while the remolded strength is 30 units, find the sensitivity of the soil? - 2.3
- 3.7
- 4.6
- 5.1
Given, Undistributed strength - 70 units Remolded strength - 30 units We know that, 16) The relationship between a - a
_{c}= 1 - S_{r} - a
_{c}= S_{r}-1 - a
_{c}= 1 + S_{r} - a
_{c}= 1 × S_{r}
We know that, Relationship between air content of soil a a a Where, S = Degree of saturation a 17) 1 torr pressure is equal to - 1 atm pressure
- 1 mm of mercury
- 100 kg - m
- 1 newton
We know that, 760 torr = 1 atm pressure 760 mm = 1 atm pressure It means 1 mm of mercury = 760 torr 18) A liquid compressed in the cylinder has a volume of 0.06 m - 991 N/m
^{2} - 304 N/m
^{2} - 461 N/m
^{2} - 3202 N/m
^{2}
19) Find the pressure in pascals at a depth of 5 m below the free surface of a body of water? - 60050 Pa
- 49050 Pa
- 67068 Pa
- 89070 Pa
Given, h = 5 m g = 9.81 and ρ=1000 We know that, Pressure (P) = ρgh = 1000 × 9.81 × 5 = 49050 Pa 20) Contour interval is - Directly proportional to the scale of a map
- Inversely proportional to the scale of a map
- Short for accurate work
- Square of the flatness of the ground
21) If the distance between two stations, P and Q, can be accurately measured with one complete Gunter's chain and one complete engineer's chain, find the distance between P and Q? - 296 ft
- 326 ft
- 586 ft
- 166 ft
Given, Gunter's chain = 66 ft Engineers chain = 100 ft So the distance between two stations P and Q = Gunter's chain + Engineers chain = 66 ft + 100 ft = 166 ft 22) The modular ratio is given by
We know that, Where, m = Modular Ratio, and σ 23) If the soil has a bulk density of 48 kN/m - 40 kN/m
^{3} - 80 kN/m
^{3} - 120 kN/m
^{3} - 20 kN/m
^{3}
Given, bulk density Y Water content w = 20% We know that 24) A vehicle has a wheelbase of 8.5 m. find the off-tranking while negotiating a curved path with a mean radius of 40 m? - 0.30
- 0.60
- 0.90
- 1.20
Length of the wheelbase (I) = 8.5m Radius (R) = 40 m. Off tracking =? We know that 25) The condition of zero atmospheric pressure can be expected - Upper sea level
- Lower sea level
- Mean sea level
- Phreatic surface
26) The critical depth of flow in a most economic triangular channel section for a discharge of 2 m - (0.296)
^{1/5}m - (0.746)
^{1/5}m - (0.816)
^{1/5}m - (0.586)
^{1/5}m
Given, Discharge(Q) = 2 m3/sec For the most economical triangular channel section, the side slope m is given by m = tanθ = tan 450 = 1 We know that, the critical depth for tringular channel section is given by 27) The equation gives the angle of twist of a circular shaft under the action of a torsional moment T - LT/GJ
- GL/TJ
- JL/TJ
- GT/JL
From the equation of torsion Where, θ=Angle of twist L = Length of the shaft T = Applied twisting moment J = Polar moment of inertia G = Modulus of rigidity 28) A soil sample has liquid limit of 40% ,plastic limit of 30%, and shrinkage limit of 20% for natural water content of 25%, find the consistency index for the sample - 50 %
- 100 %
- 150 %
- 200 %
Given, Liquid limit (W Plastic limit (W Liquid limit (W Natural water content (W We know that, 29) Pycnometer method is used to calculate - Latent heat
- Specific heat
- Specific gravity
- Tensile strength
30) Find the value of peak factor considered in the estimation of water demand for the population of 2,50,222? - 3.0
- 4.5
- 3.5
- 2.0
If the population is more than 2 lakhs, the peak factor is considered as 2.0 If the population is between 50,000 to 2 lakhs, the peak factor is considered as 2.5 If the population is upto 50000, the peak factor is considered as 3 31) The lost time due to starting delay on a traffic signal is noted to be 5s, the actual green time is the 20s, and the yellow tine is 2s. Find the value of effective green time? - 11 seconds
- 17 seconds
- 24 seconds
- 34 seconds
Effective green time is given as = Actual green time + yellow time - lost time = 20 + 2 - 5 = 17 seconds. 32) If the allowable percentage limit error in the estimate of basic rainfall is "E" and the coefficient of variation of rainfall is a CV, find the optimum number of rain gauges.
The following equation gives the optimum number of rain gauges Where, N = Number of rain gauges. C E = Allowable percentage error. Here, 33) A soil has a discharge velocity of 8 � 10 -9 m/s and a void ratio of 0.8. Find its seepage velocity? - 29.28 × 10
^{-9}m/s - 48.58 × 10
^{-8}m/s - 78.18 × 10
^{-7}m/s - 18.18 × 10
^{-9}m/s
Given, Discharge velocity (V) = 8 × 10 Void ratio(e) = 0.8 We know that, 34) If the coefficient of permeability for the soil is 10-2 cm/sec, the soil can be classified as - Sand
- Gravel
- Silt
- Clay
The coefficient of permeability for the soil is 1 - 10 The coefficient of permeability for the soil is 10 The coefficient of permeability for the soil is < 10 The coefficient of permeability for the soil is > 1 cm/sec; the soil can be classified as Gravel. 35) According to the Kuichling formula, if K is the population of a thousand, find the fire demand of water in liters per minute? - 1818√K
- 6316√K
- 3182√K
- 2589√K
According to the Kuichling formula, fire demand is given by the equation Q = 3182√K Where, Q = I/ min K = Population (In thousand) 36) According to the Indian soil classification system, inorganic silts of high compressibility are given by the symbol. - KI
- MH
- TH
- GH
As per the Indian soil classification system, MH = High compressible salt. MI = Medium compressible salt. ML = Low compressible salt. 37) A substance bar is used to determine - Vertical distances
- Displacements
- Horizontal distances
- None of these
Substance bar is used to determine the perpendicular angle (90 38) If the duty of a crop is 950 hectare/cumec and the base period is 150 days, find the delta of the crop? - 130 cm
- 140 cm
- 150 cm
- 160 cm
Given, Duty of a crop (D)= 950 hectare/cumec Base period (B)= 150 days ∆ =? We know that the relation between ∆ and duty is 39) If the fineness modulus of sand is 3.1, it is graded as - Fine sand
- Low sand
- Coarse sand
- Medium sand
40) If the weight of a dia is 40 mm, find the bar per meter length? - 6.587 kg
- 4.859 kg
- 7.394 kg
- 9.888 kg
= 0.00618 × (40) = 9.888 kg 41) If the stopping distance of a vehicle is 24 m and the average length is 8m, find the theoretical maximum capacity (vehicle/hour) of a traffic lane at a speed of 12m/sec? - 1350
- 1750
- 1930
- 2275
Given; Stopping distance of a vechile = 24 m Average length = 8m Speed (V) = 12m/sec = 12 × 3.6 = 43.2 km/hr We know that, Space headway (S) = sight distance + average length of the vechile (L) = 24 + 8 = 32m So, when we apply the Theoretical maximum capacity formula we get, 42) The detailed plotting in a plane table surveying is usually done by - Dumpy level
- Radiation
- Traversing
- Both option a and c
43) If an ascending gradient of 1 in 60 meets another ascending gradient of 1 in 20, find the deviation angle?
44) The absolute minimum radius of the horizontal curve for a design speed 40 kmph - 65.88 m
- 63.66 m
- 44.59 m
- 57.26 m
According to IRC, the maximum super elevation for plain and rolling terrain e = 0.07 and f = 0.15 Given; V = 40 kmph We know that, Absolute minimum radius 45) As per the classification of ordinary portland cement by the Indian Standard Bureau, which of the given cement is a grade of cement? - Grade 95
- Grade 53
- Grade 63
- Grade 15
46) If a transition curve is applied between a straight and a curve such that a superelevation of 18 cm is applied over a curve and if the rate of superelevation is 1 IN 600, find the length in a meter of the transition curve? - 75 meter
- 118 meter
- 108 meter
- 125 meter
Given; Super elevation(e) = 18 cm Rate of super elevation = 1 IN 600 So the length in transition curve = 600 × 0.18 = 108 meter 47) Find the strainer length required for a deep tube well, giving a discharge of 12 liters per second? Assume permissible entrance velocity of 3 cm/second. It is desired to have the strainer of slot sizes 25mm � 0.4 mm with a number of slots per cm length of the strainer as 120. - 2.7 m
- 4.9 m
- 6.7 m
- 9.2 m
Let us suppose the length of the strainer is 'p' meter = 25 × 0.4 × 10 = 2.7 m 48) A soil sample is having a specific gravity of 3.4 and a void ratio of 0.54. If the water content in percentage required to fully saturate the soil, find the void ratio? - 16 %
- 26 %
- 36 %
- 46 %
Given Specific gravity (g) =3.4 Void ratio (e) = 0.54 We know that, eS = wg 0.54 × 1 = w × 3.4 (For fully saturated soil s is considered as 1) 49) The permissible stress in steel is 160 MPa in the water tank of diameter 1.8 m which is designed to resist direct tensile force (T) of 240 N per meter width. Find the required area of tension steel in mm - 2500 mm
^{2} - 1500 mm
^{2} - 3500 mm
^{2} - 4500 mm
^{2}
Given; σ Diameter of tank =1.8 m Tensile force (T) = 240 N/meter = 240 × 10 50) If the actual thickness of a brick masonry wall is 25 cm, its effective length is 3.45m. Its effective height is 3.25 m, and its code-specified stiffening coefficient is 1.6. find the tenderness ratio(For design) of the wall? - 7.627
- 3.129
- 2.189
- 8.125
Given; Actual thickness = 25 cm Effective length = 3.45m Effective height = 3.25 m Stiffening coefficent = 1.6 We know that, Effective thickness = Actual thickness ×stiffening coefficient Effective thickness = 25 ×1.6 = 40 cm Stenderness ratio = Minimum of (effective length/effective thickness) or (effective height/effective thickness) Slenderness ratio = Minimum of (3.45×100/40) or (3.25 ×100/40) Hence standerness ratio is 8.125 51) Construction equipment has a useful life of 4 years after which it is to be replaced by a new one. If the interest rate is 6 %, find the nearest value of the sinking fund factor? - 2.30
- 3.30
- 4.30
- 5.30
Given; Life(n) = 4 years Interest rate(i) = 6 % = 0.06 Sinking fund factor = ? We know that, 52) A compression member is having gross effective cross-sectional areas of 1800 mm - 433 kN
- 288 kN
- 127 kN
- 632 kN
For compression members, design strength is determined based on gross cross-sectional area. Hence design compressive strength = 160 MPa 1800 mm = 288 kN 53) For the relationship , u = 33 - 0.44k, find the maximum flow in vechile/hour? - 445
- 666
- 939
- 396
We know that, q = k u or q = k (33 - 0.44k) For maximum flow dq/dk = 33 - 0.44 ×2k = 0 So, k = 60 vechiles/km Therefore, q 54) A layer of soil with G = 2.70 and e = 0.70 is subjected to an upward head of 1.8 m due to water seepage. Find the depth of the soil layer required to provide a factor of safety 2 against piping? - 9.6 m
- 12.6 m
- 3.6 m
- 1.6 m
Given G = 2.70 e = 0.70 We know that critical hydraulic gradient 55) While designing a hydraulic structure, the piezometric head at the bottom of the floor is computed as 15m. The datum is 4 m below the bottom floor. The assured standing water depth above the floor is 3 m. if the specific gravity of the floor material is 3, find the thickness of the floor. - 1 m
- 2 m
- 3 m
- 4 m
56) The depth of flow in an alluvial channel is 2 m. If the critical velocity ratio is 1.5 and manning's n is 0.025, find the critical velocity of the channel as per Kennedy's method - 1.28 m/sec
- 2.98 m/sec
- 7.26 m/sec
- 9.85 m/sec
The depth of flow in a alluvial channel (y) = 2 m Critical velocity ratio (m) = 1.5 manning's n = 0.025 We know that, the velocity as per kennedy method Vo = 0.55 × m × (y) 0.64 Vo = 0.55 × 1.5 × (2) 0.64 = 1.28 m/sec 57) If a soil has a liquid of 50 % and a plasticity index of 25 %, find the plastic limit of the soil? - 20 %
- 25%
- 40 %
- 50%
Given; Liquid W Plasticity index I Plastic limit W We know that, I 25 % = 50 % - W W 58) In an experiment, it found that the bulk modulus of a material is equal to its shear modulus. Find the Poisson's ratio?
59) A 40 m metric chain is found to be 0.2 m too short throughout the measurement. If the distance measured is recorded as 400 m, find the actual distance measured? - 523
- 669
- 398
- 989
Given; Correct length of the chain (l) = 40 m Wrong length of the chain (l') = 40 - 0.2 = 39.8 m. Wrong length og measured line (L') = 400m Correct length of the measured line (L) = ? = L × l = l^'×L' = L ×40 = 39.8 × 400 L = 398 60) If the ultimate load is 12.0 tons, find the tensile stress of a mild steel rod of 24 mm diameter? - 0.0004 ton/mm
^{2} - 0.0548 ton/mm
^{2} - 0.7859 ton/mm
^{2} - 0.0058 ton/mm
^{2}
Given; Diameter = 24 mm Ultimate load = 12.0 ton We know that, Next TopicHuman Resource Management MCQ |