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.
| 251. |
Group symbols assigned to silty sand and clayey sand are respectively |
| A. | SS and CS |
| B. | SM and CS |
| C. | SM and SC |
| D. | MS and CS |
| Answer» D. MS and CS | |
| 252. |
The most commonly used sampler for obtaining a disturbed sample of the soil is |
| A. | split spoon sampler |
| B. | open drive sampler |
| C. | piston sampler |
| D. | thin wall shelby tube sampler |
| Answer» B. open drive sampler | |
| 253. |
If an element of a stressed body is in a state of pure shear with a magnitude of 80 N/mm2 , the magnitude of maximum principal stress at that location is |
| A. | 80 N/mm2 |
| B. | 113.14 N/mm2 |
| C. | 120 N/mm2 |
| D. | 56.57 N/mm2 |
| Answer» B. 113.14 N/mm2 | |
| 254. |
A single bay single storey portal frame has hinged left support and a fixed right support. It is loaded with uniformly distributed load on the beam. Which one of the following statements is true with regard to the deformation of the frame ? |
| A. | It would sway to the left side |
| B. | It would sway to the right side |
| C. | It would not sway at all |
| D. | None of the above |
| Answer» B. It would sway to the right side | |
| 255. |
A soil formation through which only seepage is possible, being partly permeable and capable of giving insignificant yield, is classified as |
| A. | Aquifer |
| B. | Aquitard |
| C. | Aquifuge |
| D. | Aquiclude |
| Answer» C. Aquifuge | |
| 256. |
In using the data from a plate bearing test for determining the modulus of subgrade reaction, the value of settlement to be used is : |
| A. | 1.25 mm |
| B. | 2.50 mm |
| C. | 3.75 mm |
| D. | 1.75 mm |
| Answer» B. 2.50 mm | |
| 257. |
Three reservoirs A, B and C are interconnected by pipes as shown in the below figure Water surface elevations in the reservoirs and the Piezometric Head at the junction J are indicated in the below figure. Discharges Q1, Q2 and Q3 are related as |
| A. | Q1 + Q2 = Q3 |
| B. | Q1 = Q2 + Q3 |
| C. | Q2 = Q1 + Q3 |
| D. | Q1 + Q2 + Q3 = 0 |
| Answer» C. Q2 = Q1 + Q3 | |
| 258. |
A propped cantilever beam in shown in the below figure. The plastic moment capacity of the beam is M0. The collapse load P is |
| A. | 4 M0/L |
| B. | 6 M0/L |
| C. | 8 M0/L |
| D. | 12 M0/L |
| Answer» C. 8 M0/L | |
| 259. |
A light house of 120 m height is just visible above the horizon from a ship. The correct distance (m) between the ship and the light house considering combined correction for curvature and refraction, is |
| A. | 39.098 |
| B. | 42.226 |
| C. | 39098 |
| D. | 42226 |
| Answer» E. | |
| 260. |
A soil having particles of nearly the same size is known as |
| A. | well graded |
| B. | uniformly graded |
| C. | poorly graded |
| D. | gap graded |
| Answer» C. poorly graded | |
| 261. |
A circular sewer 2 m diameter has to carry a discharge of 2 m3/s when flowing nearly full. What is the minmum required slope to initiate the flow ? (Assume Manning's n = 0.015) |
| A. | 0.00023 |
| B. | 3.6E-5 |
| C. | 9.1E-5 |
| D. | 1.4E-5 |
| Answer» D. 1.4E-5 | |
| 262. |
Cohesion in soil |
| A. | decreases active pressure and increases passive resistance |
| B. | decreases both active pressure and passive resistance |
| C. | increases the active pressure and decreases the passive resistance |
| D. | increases both active pressure and passive resistance. |
| Answer» E. | |
| 263. |
The degree of static indeterminacy of the rigid frame having two internal hinges as shown in the figure below, is |
| A. | 8 |
| B. | 7 |
| C. | 6 |
| D. | 5 |
| Answer» E. | |
| 264. |
The BOD removal efficiency, in percentage, during primary treatmet under normal conditions is about |
| A. | 0.65 |
| B. | 0.85 |
| C. | 0.3 |
| D. | Zero |
| Answer» B. 0.85 | |
| 265. |
For a fixed beam with span L, having plastic moment capacity of Mp, the ultimate central concentrated load will be |
| A. | 4 Mp/L |
| B. | Mp/8L |
| C. | 6 Mp/L |
| D. | 8 Mp/L |
| Answer» E. | |
| 266. |
Allowable average shear stress in an un-stiffened web for beams made of steel of grade 250 N/mm2 is : |
| A. | 250 N/mm2 |
| B. | 165 N/mm2 |
| C. | 150 N/mm2 |
| D. | 100 N/mm2 |
| Answer» E. | |
| 267. |
The appropriate field test to determine the insitu undrained shear strength of soft clay is : |
| A. | plate load test |
| B. | static cone penetration test |
| C. | standard penetration test |
| D. | vane shear test |
| Answer» E. | |
| 268. |
The shape of the STOP sign according to IRC:67-2001 is |
| A. | circular |
| B. | triangular |
| C. | octagonal |
| D. | rectangular |
| Answer» D. rectangular | |
| 269. |
Which one of the following conditions, both elastic and plastic methods of analysis of indeterminate structures have to satisfy ? |
| A. | yield condition |
| B. | mechanism condition |
| C. | equilibrium |
| D. | compatibility of deformation |
| Answer» E. | |
| 270. |
A pile of 0.50 m diameter and of length 10 m is embedded in a deposit of clay. The un-drained strength parameters of the clay are cohesion = 60 kN/m2 and the angle in internal friction = 0. The skin friction capacity (kN) of the pile for an adhesion factor of 0.6, is |
| A. | 671 |
| B. | 565 |
| C. | 283 |
| D. | 106 |
| Answer» C. 283 | |
| 271. |
Well foundations are commonly used as foundations for the following structures : |
| A. | Water tanks |
| B. | Bridges |
| C. | Buildings |
| D. | Reciprocating machines |
| Answer» C. Buildings | |
| 272. |
A vertical rod PQ of length L is fixed at its top end P and has a flange fixed to the bottom end Q. A weight W is dropped vertically from a height h(< L) on to the flange. The axial stress in the rod can be reduced by |
| A. | increasing the length of the rod |
| B. | decreasing the length of the rod |
| C. | decreasing the area of cross-section of the rod |
| D. | increasing the modulus of elasticity of the material |
| Answer» B. decreasing the length of the rod | |
| 273. |
The main constituents of gas generated during the anaerobic digestion of sewage sludge are : |
| A. | carbon dioxide and methane |
| B. | methane and ethane |
| C. | carbon dioxide and carbon monoxide |
| D. | carbon monoxide and nitrogen |
| Answer» B. methane and ethane | |
| 274. |
The standard plate size in a plate bearing test for finding modulus of subgrade reaction (k) value is |
| A. | 100 cm diameter. |
| B. | 50 cm diameter. |
| C. | 75 cm diameter. |
| D. | 25 cm diameter. |
| Answer» D. 25 cm diameter. | |
| 275. |
Transition curves are provided on the approach to horizontal curves in order to : |
| A. | increase jerk to allowable levels |
| B. | minimize the length of the horizontal curve |
| C. | simplify the laying-out and construction of the horizontal curve |
| D. | reduce jerk to allowable levels |
| Answer» E. | |
| 276. |
The proposed dam shown in the below figure is 90 m long and coefficient of permeability of the soil is 0.0013 mm/second. The quantity of water (m3) that will be lost per day, by seepage is (rounded to the nearest number): |
| A. | 55 |
| B. | 57 |
| C. | 59 |
| D. | 61 |
| Answer» E. | |
| 277. |
The sequent depth ratio of a hydraulic jump in a rectangular horizontal channel is 10.30. The Froude Number at the beginning of the jump is : |
| A. | 5.64 |
| B. | 7.63 |
| C. | 8.05 |
| D. | 13.61 |
| Answer» C. 8.05 | |
| 278. |
A 1 : 30 model of an ogee spillway crest records an acceleration of 1.3 m/s2 at a certain location. The homologous value of the acceleration in the prototype in m/s2 , is |
| A. | 0.043 |
| B. | 0.237 |
| C. | 1.3 |
| D. | 7.12 |
| Answer» D. 7.12 | |
| 279. |
The slope of the elastic curve at the free end of a cantilever beam of span L, and with fluxural rigidity EI, subjected to uniformly distributed load of intensity w is |
| A. | wL3/6EI |
| B. | wL3/3EI |
| C. | wL4/8EI |
| D. | wL3/2EI |
| Answer» B. wL3/3EI | |
| 280. |
For a flow of 5.7 MLD (million litres per day) and a detention time of 2 hours, the surface area of a rectangular sedimentation tank to remove all particles having settling velocity of 0.33 mm/s is |
| A. | 20 m2 |
| B. | 100 m2 |
| C. | 200 m2 |
| D. | 400 m2 |
| Answer» D. 400 m2 | |
| 281. |
A three hinged arch shown in the below figur is quarter of a circle, If the vertical and horizontal components of reaction at A are equal, the value of θ is |
| A. | 60° |
| B. | 45° |
| C. | 30° |
| D. | None in (0°, 90°) |
| Answer» C. 30¬∞ | |
| 282. |
A road is provided with a horizontal circular curve having deflection angle of 55° and centre line radius of 250 m. A transition curve is to be provided at each end of the circular curve of such a length that the rate of gain of radial acceleration is 0.3 m/s3 at a speed of 50 km per hour. Length of the transition curve required at each of the ends is |
| A. | 2.57 m |
| B. | 33.33 m |
| C. | 35.73 m |
| D. | 1666.67 m |
| Answer» D. 1666.67 m | |
| 283. |
A person standing on the bank of a canal drops a stone on the water surface. He notices that the disturbance on the water surface in not travelling upstream. This is because the flow in the canal is |
| A. | sub-critical |
| B. | super-critical |
| C. | steady |
| D. | uniform |
| Answer» C. steady | |
| 284. |
MPN index is a measure of one of the following : |
| A. | Coliform bacteria |
| B. | BOD5 |
| C. | Dissolved Oxygen Content |
| D. | Hardness |
| Answer» B. BOD5 | |
| 285. |
The flow of water (mass density = 1000 kg/m3 and kinematic viscosity = 10-6 m2/s) in a commercial pipe, having equivalent roughness ks as 0.12 mm, yields an average shear stress at the pipe boundary = 600 N/m2. The value of ks/δ' (δ' being the thickness of laminar sub-layer) for this pipe is |
| A. | 0.25 |
| B. | 0.5 |
| C. | 6 |
| D. | 8 |
| Answer» E. | |
| 286. |
Water flows at a rate of 10 m3/s in a rectangular channel 3 m wide. The critical depth of flow is |
| A. | 1.13 m |
| B. | 2 m |
| C. | 1.45 m |
| D. | 1.04 m |
| Answer» E. | |
| 287. |
While deriving an expression for loss of head due to a sudden expansion in a pipe, in addition to the continuity and impulse-momentum equations, one of the following assumptions is made : |
| A. | Head loss due to friction is equal to the head loss in eddying motion |
| B. | The mean pressure in eddying fluid is equal to the downstream pressure |
| C. | The mean pressure in eddying fluid is equal to the upstream pressure |
| D. | Head lost in eddies is neglected |
| Answer» D. Head lost in eddies is neglected | |
| 288. |
A reinforced concrete column contains longitudinal steel equal to 1 percent of net cross-sectional area of the column. Assume modular ratio as 10. The loads carried (using the elastic theory) by the longitudinal steel and the net area of concrete, are Ps and Pc respectively. The ratio Ps/Pc expressed as percent is |
| A. | 0.1 |
| B. | 1 |
| C. | 1.1 |
| D. | 10 |
| Answer» E. | |
| 289. |
Coulomb's theory of earth pressure is based on : |
| A. | the theory of elasticity |
| B. | the theory of plasticity |
| C. | empirical rules |
| D. | wedge theory |
| Answer» E. | |
| 290. |
A weir on a permeable foundation with downstream sheet pile is shown in the figure below. The exit gradient as per Khosla's method is |
| A. | 1 in 6.0 |
| B. | 1 in 5.0 |
| C. | 1 in 3.4 |
| D. | 1 in 2.5 |
| Answer» D. 1 in 2.5 | |
| 291. |
Permissible bending tensile stress in high yield strength deformed bars of grade 415 N/mm2 in a beam is : |
| A. | 190 N/mm2 |
| B. | 230 N/mm2 |
| C. | 140 N/mm2 |
| D. | None of the above |
| Answer» C. 140 N/mm2 | |
| 292. |
The removal of dissolved organic matter occurs in |
| A. | slow sand filters |
| B. | trickling filters |
| C. | rapid sand filters |
| D. | dual media filters |
| Answer» C. rapid sand filters | |
| 293. |
In a BOD test, 5 ml of waste is added to 295 ml of aerated pure water. Initial dissolved oxygen (D.O) content of the diluted sample is 7.8 mg/l. After 5 days of incubation at 20°C, the D.O. content of the sample is reduced to 4.4 mg/l. The BOD of the waste water is : |
| A. | 196 mg/l |
| B. | 200 m/l |
| C. | 204 mg/l |
| D. | 208 mg/l |
| Answer» C. 204 mg/l | |
| 294. |
The following two statements are made with reference to a simply supported under-reinforced RCC beam : Failure takes place by crushing of concrete before the steel has yieled.The neutral axis moves up as the load is increased. With reference to the above statements, which of the following applies ? |
| A. | Both the statements are false. |
| B. | I is true but II is false. |
| C. | Both the statements are true. |
| D. | I is false but II is true. |
| Answer» D. I is false but II is true. | |
| 295. |
The ordinate of the Instantaneous Unit Hydrograph (IUH) of a catchment at any time t, is |
| A. | The slope of the 1-hour unit hydrograph at that time |
| B. | The slope of the direct runoff unit hydrograph at that time |
| C. | Difference in the slope of the S-curve and 1-hour unit hydrograph |
| D. | The slope of the S-curve with effective rainfall intensity of 1 cm/hr |
| Answer» E. | |
| 296. |
If, for a fluid in motion, pressure at a point is same in all directions, then the fluid is : |
| A. | a real fluid |
| B. | a Newtonian fluid |
| C. | an ideal fluid |
| D. | a non-Newtonian fluid |
| Answer» D. a non-Newtonian fluid | |
| 297. |
The unconfined compressive strength of a 'stiff clay' falls in the range |
| A. | less than 50 kN/m2 |
| B. | 50 to 100 kN/m2 |
| C. | 100 to 200 kN/m2 |
| D. | above 200 kN/m2 |
| Answer» B. 50 to 100 kN/m2 | |
| 298. |
The force in the member DE of the truss shown in the below figure is, |
| A. | 100.0 kN |
| B. | zero |
| C. | 35.5 kN |
| D. | 25.0 kN |
| Answer» C. 35.5 kN | |
| 299. |
The total length (in km) of the existing National Highways in India is in the range of |
| A. | 15, 000 to 25, 000 |
| B. | 25, 000 to 35, 000 |
| C. | 35, 000 to 45, 000 |
| D. | 45, 000 to 55, 000 |
| Answer» C. 35, 000 to 45, 000 | |
| 300. |
When a retaining wall moves away from the backfill, the pressure exerted on the wall is termed as |
| A. | passive earth pressure |
| B. | swelling pressure |
| C. | pore pressure |
| D. | active earth pressure |
| Answer» E. | |