MCQOPTIONS
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MCQOPTIONS
This section includes 430 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
intensity of pressure at a depth h on a block of earth weighing w per unit If p1 is the vertical______________? |
| A. | wh (1 – cos )/(1 + ) p2 is |
| B. | wh (1 – sin )/(1 + ) ) |
| C. | wh (1 – tan )/(1 + |
| D. | w (1 – cos )/h (1 + sin ) |
| Answer» C. wh (1 – tan )/(1 + | |
| 152. |
In the zone of R.C.C. beam where shear stress is less than 5 kg/cm2, nominal reinforcement is provided at a pitch of________________? |
| A. | One -half lever arm of the section |
| B. | One-third lever arm of the section |
| C. | Lever arm of the section |
| D. | One and half lever arm of the section |
| Answer» D. One and half lever arm of the section | |
| 153. |
In testing a pile by load test, pile platform is loaded with one and half times the design load and a maximum settlement is noted. The load is gradually removed and the consequent rebound is measured. For a safe pile, the net settlement (i.e. total settlement minus rebound) per tonne of test load should not exceed________________? |
| A. | 10 mm |
| B. | 15 mm |
| C. | 20 mm |
| D. | 25 mm |
| Answer» E. | |
| 154. |
In favourable circumstances a 15 cm concrete cube after 28 days, attains a maximum crushing strength______________? |
| A. | 100 kg/cm2 |
| B. | 200 kg/cm2 |
| C. | 300 kg/cm2 |
| D. | 400 kg/cm2 |
| Answer» E. | |
| 155. |
In case the factor of safety against sliding is less than 1.5, a portion of slab is constructed downwards at the end of the heel slab, which is known as___________________? |
| A. | A key |
| B. | A cut-off wall |
| C. | A rib |
| D. | All the above |
| Answer» E. | |
| 156. |
In a singly reinforced beam, the effective depth is measured from its compression edge to_________________? |
| A. | Tensile edge |
| B. | Tensile reinforcement |
| C. | Neutral axis of the beam |
| D. | Longitudinal central axis |
| Answer» C. Neutral axis of the beam | |
| 157. |
In a singly reinforced beam, if the permissible stress in concrete reaches earlier than that in steel, the beam section is called________________? |
| A. | Under-reinforced section |
| B. | Over reinforced section |
| C. | Economic section |
| D. | Critical section |
| Answer» C. Economic section | |
| 158. |
In a singly reinforced beam____________? |
| A. | Compression is borne entirely by concrete |
| B. | Steel possesses initial stresses when embedded in concrete |
| C. | Plane sections transverse to the centre line of the beam before bending remain plane after bending |
| D. | Elastic moduli for concrete and steel have different values within the limits of deformation of the beam |
| Answer» D. Elastic moduli for concrete and steel have different values within the limits of deformation of the beam | |
| 159. |
In a simply supported slab, alternate bars are curtailed at________________? |
| A. | 1/4th of the span |
| B. | 1/5th of the span |
| C. | 1/6th of the span |
| D. | 1/7th of the span |
| Answer» E. | |
| 160. |
In a pre-stressed beam carrying an external load W with a bent tendon is having angle of -stressed load P. The net downward load at the centre is_________________? |
| A. | W – 2P |
| B. | W – P |
| C. | W – P |
| D. | W – 2P |
| Answer» E. | |
| 161. |
In a pre-stressed member it is advisable to use________________? |
| A. | Low strength concrete only |
| B. | High strength concrete only |
| C. | Low strength concrete but high tensile steel |
| D. | High strength concrete and high tensile steel |
| Answer» E. | |
| 162. |
In a doubly-reinforced beam if and the effective depth and is depth of critical neutral axis, the following relationship holds good______________? |
| A. | mc/t = n/(d – n) |
| B. | (m + c)/t = n/(d + n) |
| C. | (t + c)/n = (d + n)/n |
| D. | mc/t = (d – n)/t |
| Answer» B. (m + c)/t = n/(d + n) | |
| 163. |
In a combined footing if shear stress exceeds 5 kg/cm2, the nominal stirrups provided are______________? |
| A. | 6 legged |
| B. | 8 legged |
| C. | 10 legged |
| D. | 12 legged |
| Answer» E. | |
| 164. |
In a combined footing if shear stress does not exceed 5 kg/cm2, the nominal stirrups provided are________________? |
| A. | 6 legged |
| B. | 8 legged |
| C. | 10 legged |
| D. | 12 legged |
| Answer» C. 10 legged | |
| 165. |
In a cantilever retaining wall without a heel slab______________? |
| A. | Thickness of the stem is kept same throughout |
| B. | Base slab is made 10 cm thicker than the stem |
| C. | Width of the base slab is kept 0.7 time the total height of the wall |
| D. | All the above |
| Answer» E. | |
| 166. |
In a beam the local bond stress Sb, is equal to_______________? |
| A. | Shear force/(Leaver arm × Total perimeter of reinforcement) |
| B. | Total perimeter of reinforcement/(Leaver arm × Shear force) |
| C. | Leaver arm/(Shear force × Total perimeter of reinforcement) |
| D. | Leaver arm/(Bending moment × Total perimeter of reinforcement) |
| Answer» B. Total perimeter of reinforcement/(Leaver arm × Shear force) | |
| 167. |
If W is total load per unit area on a panel, D is the diameter of the column head, L is the span in two directions, then the sum of the maximum positive bending moment and average of the negative bending moment for the design of the span of a square flat slab, should not be less than________________? |
| A. | WL/12 (L – 2D/3)² |
| B. | WL/10 (L + 2D/3)² |
| C. | WL/10 (L – 2D/3)² |
| D. | WL/12 (L – D/3)² |
| Answer» D. WL/12 (L – D/3)² | |
| 168. |
If W is the load on a circular slab of radius R, the maximum circumferential moment at the centre of the slab, is________________? |
| A. | WR²/16 |
| B. | 2WR²/16 |
| C. | 3WR²/16 |
| D. | Zero |
| Answer» D. Zero | |
| 169. |
If the width of the foundation for two equal columns is restricted, the shape of the footing generally adopted, is__________________? |
| A. | Square |
| B. | Rectangular |
| C. | Trapezoidal |
| D. | Triangular |
| Answer» C. Trapezoidal | |
| 170. |
If the tendon is placed at an rectangular beam (sectional top edge)________________? |
| A. | Is increased by PZ/e |
| B. | Is increased by Pe/Z |
| C. | Is decreased by Pe/Z |
| D. | Remains unchanged |
| Answer» D. Remains unchanged | |
| 171. |
If the size of a column is reduced above the floor, the main bars of the columns, are_____________? |
| A. | Continued up |
| B. | Bent inward at the floor level |
| C. | Stopped just below the floor level and separate lap bars provided |
| D. | All the above |
| Answer» E. | |
| 172. |
If the sides of a slab simply supported on edges and spanning in two directions are equal, the maximum bending moment is multiplied by_________________? |
| A. | 0.2 |
| B. | 0.3 |
| C. | 0.4 |
| D. | 0.5 |
| Answer» E. | |
| 173. |
If the shear stress in a R.C.C. beam is_______________? |
| A. | Equal or less than 5 kg/cm2, no shear reinforcement is provided |
| B. | Greater than 4 kg/cm2, but less than 20 kg/cm2, shear reinforcement is provided |
| C. | Greater than 20 kg/cm2, the size of the section is changed |
| D. | All the above |
| Answer» E. | |
| 174. |
If the ratio of the span to the overall depth does not exceed 10, the stiffness of the beam will ordinarily be satisfactory in case of a__________________? |
| A. | Simply supported beam |
| B. | Continuous beam |
| C. | Cantilever beam |
| D. | None of these |
| Answer» D. None of these | |
| 175. |
If the permissible compressive stress for a concrete in bending is C kg/m2, the modular ratio is_____________? |
| A. | 2800/C |
| B. | 2300/2C |
| C. | 2800/3C |
| D. | 2800/C2 |
| Answer» D. 2800/C2 | |
| 176. |
If the permissible compressive and tensile stresses in a singly reinforced beam are 50 kg/cm2 and 1400 kg/cm2 respectively and the modular ratio is 18, the percentage area At of the steel required for an economic section, is__________________? |
| A. | 0.496 % |
| B. | 0.596 % |
| C. | 0.696 % |
| D. | 0.796 % |
| Answer» D. 0.796 % | |
| 177. |
If the modular ratio is , steel ratio is and overall depth of a beam is , the depth of the critical neutral axis of the beam, is___________________? |
| A. | [m/(m – r)] d |
| B. | [m/(m + r)] d |
| C. | [(m + r)/ m] d |
| D. | [(r – m)/m] d |
| Answer» C. [(m + r)/ m] d | |
| 178. |
If the maximum shear stress at the end of a simply supported R.C.C. beam of 6 m effective span is 10 kg/cm2, the share stirrups are provided for a distance from either end where, is________________? |
| A. | 50 cm |
| B. | 100 cm |
| C. | 150 cm |
| D. | 200 cm |
| Answer» D. 200 cm | |
| 179. |
If the maximum shear stress at the end of a simply supported R.C.C. beam of 16 m effective span is 10 kg/cm2, the length of the beam having nominal reinforcement, is________________? |
| A. | 8 cm |
| B. | 6 m |
| C. | 8 m |
| D. | 10 m |
| Answer» D. 10 m | |
| 180. |
If the maximum dip of a parabolic tendon carrying tension P is h and the effective length of the pre-stressed beam is L, the upward uniform pressure will be________________? |
| A. | 8hp/ l |
| B. | 8hp/l² |
| C. | 8hl/p |
| D. | 8hl/p² |
| Answer» C. 8hl/p | |
| 181. |
If the loading on a pre-stressed rectangular beam, is uniformly distributed, the tendon to be provided should be_______________? |
| A. | Straight below centroidal axis |
| B. | Parabolic with convexity downward |
| C. | Parabolic with convexity upward |
| D. | Straight above centroidal axis |
| Answer» C. Parabolic with convexity upward | |
| 182. |
If the length of an intermediate span of a continuous slab is 5m, the length of the end span is kept_______________? |
| A. | 4.5 m |
| B. | 4.0 m |
| C. | 3.5 m |
| D. | 3.0 m |
| Answer» B. 4.0 m | |
| 183. |
If the length of a wall on either side of a lintel opening is at least half of its effective span L, the load W carried by the lintel is equivalent to the weight of brickwork contained in an equilateral triangle, producing a maximum bending moment____________________? |
| A. | WL/2 |
| B. | WL/4 |
| C. | WL/6 |
| D. | WL/8 |
| Answer» D. WL/8 | |
| 184. |
If the length of a combined footing for two columns l metres apart is L and the projection on the left side of the exterior column is x, then the projection y on the right side of the exterior column, in order to have a uniformly distributed load, is (where is the distance of centre of gravity of column loads______________? |
| A. | y = L – (l – ) ) |
| B. | y = L/2 + (l – |
| C. | y = L/2 – (l + ) |
| D. | y = L/2 – (l – ) |
| Answer» E. | |
| 185. |
If the effective length of a 32 cm diameter R.C.C. column is 4.40 m, its slenderness ratio, is_______________? |
| A. | 40 |
| B. | 45 |
| C. | 50 |
| D. | 55 |
| Answer» E. | |
| 186. |
If the diameter of the main reinforcement in a slab is 16 mm, the concrete cover to main bars is_____________? |
| A. | 10 mm |
| B. | 12 mm |
| C. | 14 mm |
| D. | 16 mm |
| Answer» E. | |
| 187. |
If the diameter of longitudinal bars of a square column is 16 mm, the diameter of lateral ties should not be less than____________________? |
| A. | 4 mm |
| B. | 5 mm |
| C. | 6 mm |
| D. | 8 mm |
| Answer» C. 6 mm | |
| 188. |
If the depth of actual neutral axis of a doubly reinforced beam______________? |
| A. | Is greater than the depth of critical neutral axis, the concrete attains its maximum stress earlier |
| B. | Is less than the depth of critical neutral axis, the steel in the tensile zone attains its maximum stress earlier |
| C. | Is equal to the depth of critical neutral axis; the concrete and steel attain their maximum stresses simultaneously |
| D. | All the above |
| Answer» E. | |
| 189. |
If the bearing capacity of soil is 10 tonnes/cm2 and the projection of plain concrete footing from walls, is a cm, the depth D of footing is_______________? |
| A. | D = 0.0775 a |
| B. | D = 0.775 a |
| C. | D = 0.775 a |
| D. | D = 0.775 a2 |
| Answer» C. D = 0.775 a | |
| 190. |
If the average bending stress is 6 kg/cm2 for M 150 grade concrete, the length of embedment of a bar of diameter d according to I.S. 456 specifications, is__________________? |
| A. | 28 d |
| B. | 38 d |
| C. | 48 d |
| D. | 58 d |
| Answer» E. | |
| 191. |
If T and R are tread and rise respectively of a stair, then_______________? |
| A. | 2R + T = 60 |
| B. | R + 2 T = 60 |
| C. | 2R + T = 30 |
| D. | R + 2 T = 30 |
| Answer» B. R + 2 T = 60 | |
| 192. |
If Sb, is the average bond stress on a bar of diameter subjected to maximum stress , the length of the embedment is given by_____________? |
| A. | l = dt/Sb |
| B. | l = dt/2Sb |
| C. | l = dt/3Sb |
| D. | l = dt/4Sb |
| Answer» E. | |
| 193. |
If R and T are rise and tread of a stair spanning horizontally, the steps are supported by a wall on one side and by a stringer beam on the other side, the steps are designed as beams of width_______________? |
| A. | R + T |
| B. | T – R |
| C. | 2 + T2) |
| D. | R – T |
| Answer» D. R – T | |
| 194. |
If q is the punching shear resistance per unit area a, is the side of a square footing for a column of side b, carrying a weight W including the weight of the footing, the depth D. of the footing from punching shear consideration, is____________________? |
| A. | D = W (a – b)/4a²bq |
| B. | D = W (a² – b²)/4a²bq |
| C. | D = W (a² – b²)/8a²bq |
| D. | D = W (a² – b²)/4abq |
| Answer» C. D = W (a² – b²)/8a²bq | |
| 195. |
If permissible working stresses in steel and concrete are respectively 1400 kg/cm2 and 80 kg/cm2 and modular ratio is 18, in a beam reinforced in tension side and of width 30 cm and having effective depth 46 cm, the lever arms of the section, is______________? |
| A. | 37 cm |
| B. | 38 cm |
| C. | 39 cm |
| D. | 40 cm |
| Answer» E. | |
| 196. |
If p1 and P2 are effective lateral loadings at the bottom and top exerted by a level earth subjected to a super-load on the vertical face of height h of a retaining wall, the horizontal pressure p per unit length of the wall, is____________________? |
| A. | [( – )/2] h |
| B. | [( + )/4] h |
| C. | [( + )/2] h |
| D. | ( – h |
| Answer» D. ( – h | |
| 197. |
If P kg/m2 is the upward pressure on the slab of a plain concrete footing whose projection on either side of the wall is a cm, the depth of foundation D is given by________________? |
| A. | D = 0.00775 aP |
| B. | D = 0.0775 aP |
| C. | D = 0.07775 aP |
| D. | D = 0.775 Pa |
| Answer» B. D = 0.0775 aP | |
| 198. |
If longitudinally spanning stairs are casted along with their landings, the maximum bending moment per metre width, is taken as___________________? |
| A. | wl²/4 |
| B. | wl²/8 |
| C. | wl²/10 |
| D. | wl²/12 |
| Answer» C. wl²/10 | |
| 199. |
If K is a constant depending upon the ratio of the width of the slab to its effective span l, x is the distance of the concentrated load from the nearer support, bw is the width of the area of contact of the concentrated load measured parallel to the supported edge, the effective width of the slab be is_______________? |
| A. | K/x (1 + x/d) + bw |
| B. | Kx (1 – x/l) + bw |
| C. | Kx (1 + x/l) + bw |
| D. | All the above |
| Answer» C. Kx (1 + x/l) + bw | |
| 200. |
If is the uniformly distributed load on a circular slab of radius maximum positive radial moment at its centre, is__________________? |
| A. | 3WR²/16 |
| B. | 2WR²/16 |
| C. | WR²/16 |
| D. | None of these |
| Answer» D. None of these | |