MCQOPTIONS
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MCQOPTIONS
This section includes 386 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
M - θ relationship for a simply supported beam shown below is given by : |
| A. | M l/EI = 2θ |
| B. | M l/EI = 3θ |
| C. | M l/EI = 4θ |
| D. | M l/EI = 6θ |
| Answer» D. M l/EI = 6Œ∏ | |
| 202. |
Presence of excess nitrates in river water indicates : |
| A. | recent pollution of water with sewage |
| B. | past pollution of water with sewage |
| C. | immediate pollution of water with sewage |
| D. | no pollution of water with sewage |
| Answer» C. immediate pollution of water with sewage | |
| 203. |
Excessive fluoride in drinking water causes |
| A. | Alzheimer's disease |
| B. | Mottling of teeth and embrittlement of bones |
| C. | Methemoglobinemia |
| D. | Skin cancer |
| Answer» C. Methemoglobinemia | |
| 204. |
Breakpoint chlorination of water involves addition of chlorine in an amount sufficient to: |
| A. | react with any ammonia and readily oxidisable organic matter |
| B. | kill Giardia cysts |
| C. | react with inorganic matter |
| D. | reduce bacterial growth in filters |
| Answer» B. kill Giardia cysts | |
| 205. |
Mechanical stabilization requires : |
| A. | mixing of two or more types of natural soils |
| B. | addition of chemicals to soils |
| C. | addition of lime to soils |
| D. | addition of cementing material to soils |
| Answer» B. addition of chemicals to soils | |
| 206. |
Bending moments at joint b and c of the portal frame are respectively : |
| A. | + p l/2, - p l/2 |
| B. | + p l/2, + p l/2 |
| C. | + p l/4, - p l/4 |
| D. | + p l/4, + p l/4 |
| Answer» C. + p l/4, - p l/4 | |
| 207. |
Water distribution systems are sized to meet the |
| A. | maximum hourly demand |
| B. | average hourly demand |
| C. | maximum daily demand and fire demand |
| D. | average daily demand and fire demand. |
| Answer» D. average daily demand and fire demand. | |
| 208. |
At highway stretches where the required overtaking sight distance cannot be provided, it is necessary to incorporate : |
| A. | at least twice the stopping sight distance |
| B. | half the required overtaking sight distance |
| C. | one-third the required overtaking sight distance |
| D. | three times the stopping sight distance |
| Answer» B. half the required overtaking sight distance | |
| 209. |
Maximum strain at the level of compression steel for a rectangular section having effective cover to compression steel as d' and neutral axis depth from compression face as xu is |
| A. | 0.0035 (1 - d'/xu) |
| B. | 0.002 (1 - d'/xu) |
| C. | 0.0035 (1 - xu/d') |
| D. | 0.002 (1 - xu/d') |
| Answer» B. 0.002 (1 - d'/xu) | |
| 210. |
A lysimeter is used to measure : |
| A. | infiltration |
| B. | evaporation |
| C. | evapotranspiration |
| D. | radiation |
| Answer» D. radiation | |
| 211. |
Two completely penetrating wells are located L (in metres) apart, in homogeneous confined aquifer. The drawdown measured at the mid point between the two wells (at a distance of 0.5 L from both the wells) is 2.0 m when only the first well is being pumped at the steady rate of Q1 m3/sec. When both the wells are being pumped at identical steady rate of Q2 m3/sec, the drawdown measured at the same location is 8, 0 m. It may be assumed that the drawdown at the wells always remains at 10.0 m when being pumped and the radius of influence is larger than 0.5 L Q1/Q2 is equal to |
| A. | 43593 |
| B. | 43528 |
| C. | 43682 |
| D. | ln (L/2) |
| Answer» E. | |
| 212. |
The degree of kinematic indeterminacy of the rigid frame with clamped ends at A and D shown in the below figure is, |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | zero |
| Answer» C. 2 | |
| 213. |
Two steel plates each of width 150 mm and thickness 10 mm are connected with three 20 mm diameter rivets placed in a zig-zag pattern. The pitch of the rivets is 75 mm and gauge is 60 mm. If the allowable tensile stress is 150 MPa, the maximum tensile force that the joint can withstand is |
| A. | 195.66 kN |
| B. | 195.00 kN |
| C. | 192.75 kN |
| D. | 225.00 kN |
| Answer» D. 225.00 kN | |
| 214. |
The material that exhibits the same elastic properties in all the directions at a point, is said to be |
| A. | homogeneous |
| B. | orthotropic |
| C. | visco-elastic |
| D. | isotropic |
| Answer» E. | |
| 215. |
Temporary hardness in water is caused by the presence of |
| A. | Bicarbonates of Ca and Mg |
| B. | Sulphates of Ca and Mg |
| C. | Chlorides of Ca and Mg |
| D. | Nitrates of Ca and Mg. |
| Answer» B. Sulphates of Ca and Mg | |
| 216. |
Base course is used in rigid pavements for |
| A. | prevention of subgrade settlement |
| B. | prevention of slab cracking |
| C. | prevention of pumping |
| D. | prevention of thermal expansion |
| Answer» D. prevention of thermal expansion | |
| 217. |
The toughness index of clayey soils is given by |
| A. | Plasticity index/Flow index |
| B. | Liquid limit/Plastic limit |
| C. | Liquidity index/Plastic limit |
| D. | Plastic limit/Liquidity index |
| Answer» B. Liquid limit/Plastic limit | |
| 218. |
In deriving the equation for the hydraulic jump in a rectangular channel in terms of the conjugate depths and the initial Froude number. |
| A. | continuity equation and energy equation are used |
| B. | continuity equation and momentum equation are used |
| C. | equations of continuity, mementum and energy are used |
| D. | gradually varied flow equation is used |
| Answer» D. gradually varied flow equation is used | |
| 219. |
What is the equivalent single wheel load of a dual wheel assembly carrying 20, 440 N each for pavement thickness of 20 cm ? Centre to centre spacing of tyres is 27 cm and the distance between the walls of tyres is 11 cm |
| A. | 27, 600 N |
| B. | 32, 300 N |
| C. | 40, 880 N |
| D. | 30, 190 N |
| Answer» E. | |
| 220. |
The consistency of a saturated cohesive soil is affected by |
| A. | water content |
| B. | particle size distribution |
| C. | density index |
| D. | coefficient of permeability |
| Answer» B. particle size distribution | |
| 221. |
The basic assumption of plane sections normal to the neutral axis before bending, remaining plane and normal to the neutral axis after bending, leads to : |
| A. | uniform strain over the beam cross section |
| B. | uniform stress over the cross section |
| C. | linearly varying strain over the cross section |
| D. | stresses which are proportional to strains at all cross sections |
| Answer» B. uniform stress over the cross section | |
| 222. |
The following characteristics pertain to the sand filters used in water industry. Filtration rate is 1 to 4 m3 (m2 day).Typical duration of operation in one run is 24 to 72 hours.Operating cost is low. Which of the above characteristics pertain to slow sand filters ? |
| A. | I, II and III |
| B. | I and II |
| C. | II and III |
| D. | I and III |
| Answer» E. | |
| 223. |
The liquid limit (LL), plastic limit (PL) and shrinkage limit (SL) of a cohesive soil satisfy the relation |
| A. | LL > PL < SL |
| B. | LL > PL > SL |
| C. | LL < PL < SL |
| D. | LL < PL > SL |
| Answer» C. LL < PL < SL | |
| 224. |
The ultimate bearing capacity of a soil is 300 kN/m2. The depth of foundation is 1 m and unit weight of soil is 20 kN/m3. Choosing a factor of safety of 2.5, the net safe bearing cacpacity is |
| A. | 100 kN/m2 |
| B. | 112 kN/m2 |
| C. | 800 kN/m2 |
| D. | 100.5 kN/m2 |
| Answer» E. | |
| 225. |
The members EJ and IJ of steel truss shown in the figure below are subjected to a temperature rise of 30° C. The coefficient of thermal expansion of steel is 0.000012 per °C per unit length. The displacement (mm) of joint E relative to joint H along the direction HE of the truss, is |
| A. | 0.255 |
| B. | 0.589 |
| C. | 0.764 |
| D. | 1.026 |
| Answer» D. 1.026 | |
| 226. |
The order or the flexibility matrix for a structure is, |
| A. | equal to the number of redundant forces |
| B. | more than the number of redundant forces |
| C. | less than the number of redundant forces |
| D. | equal to the number of redundant forces plus three |
| Answer» B. more than the number of redundant forces | |
| 227. |
The type of surveying in which the curvature of the earth is taken into account is called |
| A. | Geodetic surveying |
| B. | Plane surveying |
| C. | Preliminary surveying |
| D. | Topographical surveying |
| Answer» B. Plane surveying | |
| 228. |
The group index of a soil subgrade is 7. The subgrade soil is rated as |
| A. | poor |
| B. | very poor |
| C. | good |
| D. | fair |
| Answer» B. very poor | |
| 229. |
A roundabout is provided with an average entry width of 8.4 m, width of weaving section as 14 m, and length of the weaving section between channelizing islands as 35 m. The crossing traffic and total traffic on the weaving section are 1000 and 2000 PCU per hour respectively. The nearest rounded capacity of the roundabout (in PCU per hour) is |
| A. | 3300 |
| B. | 3700 |
| C. | 4500 |
| D. | 5200 |
| Answer» C. 4500 | |
| 230. |
A foundation is considered as shallow if its depth is : |
| A. | less than 1 metre |
| B. | greater than its width |
| C. | equal to or less than its width |
| D. | greater than 1 metre |
| Answer» D. greater than 1 metre | |
| 231. |
A direct runoff hydrograph due to an isolated storm with an effective rainfall of 2 cm was trapezoidal in shape as shown in the below figure. The hydrograph corresponds to a catchment area (in sq. km) of |
| A. | 790.2 |
| B. | 599.4 |
| C. | 689.5 |
| D. | 435.3 |
| Answer» C. 689.5 | |
| 232. |
One of the probable causes of rutting on flexible pavements is |
| A. | excessive stripping of binder material from the wearing course |
| B. | use of flaky aggregates in the wearing course |
| C. | inadequate compaction of pavement layers |
| D. | high wind speeds |
| Answer» D. high wind speeds | |
| 233. |
A reinforced concrete structure has to be constructed along a sea coast. The minimum grade of concrete to be used as per IS : 456-2000 |
| A. | M 15 |
| B. | M 20 |
| C. | M 25 |
| D. | M 30 |
| Answer» E. | |
| 234. |
Both Reynolds and Froude numbers assume significance in one of following examples : |
| A. | Motion of submarine at large depths |
| B. | Motion of ship in deep seas |
| C. | Cruising of a missile in air |
| D. | Flow over spillways |
| Answer» E. | |
| 235. |
The forces in members 'a, b, c' in the truss shown are, respectively |
| A. | P, , 0 |
| B. | , P, 0 |
| C. | P, P, P |
| D. | , , 0 |
| Answer» B. , P, 0 | |
| 236. |
The strain energy stored in member AB of the pin-jointed truss shown in the below figure, when E and A are same for all members, is |
| A. | 2P2L/AE |
| B. | P2L/AE |
| C. | P2L/2AE |
| D. | Zero |
| Answer» D. Zero | |
| 237. |
The deflection of a cantilever beam at free end b applied with a moment M at the same point is : |
| A. | M l2/EI |
| B. | M l2/2 EI |
| C. | M l2/3 EI |
| D. | M l2/4 EI |
| Answer» C. M l2/3 EI | |
| 238. |
A-2-hour unit hydrograph can be approximated as trapezoidal as shown in the below figure. The unit hydrograph refers to catchment of area |
| A. | 138.24 km2 |
| B. | 0.0384 km2 |
| C. | 384 m2 |
| D. | 3840 m2 |
| Answer» D. 3840 m2 | |
| 239. |
Negative skin friction occurs when : |
| A. | an upward drag exists in the pile |
| B. | the surrounding soil settles more than the pile |
| C. | the pile passes continuously through a firm soil |
| D. | the driving operation begins |
| Answer» C. the pile passes continuously through a firm soil | |
| 240. |
Two samples of water A and B have pH values of 4.4 and 6.4 respectively. How many times more acidic sample A is than sample B ? |
| A. | 0 |
| B. | 50 |
| C. | 100 |
| D. | 200 |
| Answer» D. 200 | |
| 241. |
The Piezometric head at point C, in the experimental set-up shown in the below figure when the flow takes place under a constant head through the soils A and B is |
| A. | 0 cm |
| B. | 40 cm |
| C. | 80 cm |
| D. | 120 cm |
| Answer» E. | |
| 242. |
The relationship between the length (l) and radius (r) of an ideal transition curve is given by |
| A. | l ‚àù r |
| B. | l ‚àù r2 |
| C. | l ‚àù 1/r |
| D. | l ‚àù 1/r2 |
| Answer» D. l ‚àù 1/r2 | |
| 243. |
An inverted siphon is a |
| A. | device for distributing septic tank effluent to a soil absorption system |
| B. | device for preventing overflow from elevated water storage tank |
| C. | device for preventing crown corrosion of sewer |
| D. | section of sewer which is dropped below the hydraulic grade line in order to avoid an obstacle. |
| Answer» E. | |
| 244. |
A septic tank is |
| A. | an aerobic method of on site sewage treatment |
| B. | an anaerobic method of on site treatment |
| C. | a physical method of water treatment |
| D. | a physicochemical method of water treatment |
| Answer» C. a physical method of water treatment | |
| 245. |
Cavitation is caused by |
| A. | high velocity |
| B. | low pressure |
| C. | high pressure |
| D. | high temperature |
| Answer» C. high pressure | |
| 246. |
Factor of safety adopted by IS : 800 - 1984 while arriving at the permissible stress in axial compression, is : |
| A. | 2 |
| B. | 1 |
| C. | 1.67 |
| D. | 1.5 |
| Answer» D. 1.5 | |
| 247. |
The return period for the annual maximum flood of a given magnitude is 8 years. The probability that this flood magnitude will be exceeded once during the next 5 years is |
| A. | 0.625 |
| B. | 0.966 |
| C. | 0.487 |
| D. | 0.529 |
| Answer» D. 0.529 | |
| 248. |
The dimensions for the flexural rigidity of a beam element in mass (M), length (L) and time (T) is given by |
| A. | MT-2 |
| B. | ML3T-2 |
| C. | ML-1T-2 |
| D. | M-1T2 |
| Answer» E. | |
| 249. |
The width of expansion joint gap is 2.5 cm in a cement concrete pavement. The spacing between expansion joints for a maximum rise in temperature of 25°C is, (assuming coefficient of thermal expansion of concrete as 10 x 10-6 per degree C), |
| A. | 5 m |
| B. | 50 m |
| C. | 100 m |
| D. | 25 M |
| Answer» B. 50 m | |
| 250. |
Which one of the following set of values give the minimum clear cover (in mm) for the main reinforcements in the slab, beam, column and footing, respectively, according to IS : 456-1978 ? |
| A. | 20, 25, 30, 75 |
| B. | 5, 15, 25, 50 |
| C. | 15, 25, 40, 75 |
| D. | none of the above |
| Answer» D. none of the above | |