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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.
| 301. |
A pile of length L carrying a uniformly distributed load W per metre length is suspended at two points, the maximum, B.M. at the centre of the pile or at the points of suspension, is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| E. | [E]. |
| Answer» D. [D]. | |
| 302. |
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 x is the distance of centre of gravity of column loads). |
| A. | y = L - (l - x) |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» E. | |
| 303. |
If p is the net upward pressure on a square footing of side b for a square column of side a, the maximum bending moment is given by |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» D. [D]. | |
| 304. |
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 | |
| 305. |
If W is the uniformly distributed load on a circular slab of radius R fixed at its ends, the maximum positive radial moment at its centre, is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | zero |
| E. | none of these. |
| Answer» D. zero | |
| 306. |
If W is the load on a circular slab of radius R, the maximum radial moment at the centre of the slab, is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» D. [D]. | |
| 307. |
If l1 and l2 are the lengths of long and short spans of a two way slab simply supported on four edges and carrying a load w per unit area, the ratio of the loads split into w1 and w2 acting on strips parallel to l2 and l1 is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» E. | |
| 308. |
The modular ratio m of a concrete whose permissible compressive stress is C, may be obtained from the equation. |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| E. | [E]. |
| Answer» D. [D]. | |
| 309. |
If the neutral axis of a T-beam is below the slab, the relationship between the flange width B, depth of neutral axis n, thickness of the slab ds, effective depth of the beam d, gross area of tensile steel At and the modular ratio m may be stated as |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | Bds(n - ds) = mAt(d - n) |
| Answer» D. Bds(n - ds) = mAt(d - n) | |
| 310. |
The depth of the centre of gravity (y) of the resultant compressive stress from the compression edge of the T-beam specified in Q. 13.52 is given by |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» E. | |
| 311. |
If diameter of a reinforcement bar is d, the anchorge value of the hook is |
| A. | 4d |
| B. | 8d |
| C. | 12d |
| D. | 16d |
| E. | none of these. |
| Answer» E. none of these. | |
| 312. |
If Sb, is the average bond stress on a bar of diameter d subjected to maximum stress t, the length of the embedment l is given by |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| E. | [E]. |
| Answer» E. [E]. | |
| 313. |
In a doubly-reinforced beam if c and t are stresses in concrete and tension reinforcement, d is the effective depth and n is depth of critical neutral axis n, the following relationship holds good |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| E. | [E]. |
| Answer» B. [B]. | |
| 314. |
A singly reinforced beam has breadth b, effective depth d, depth of neutral axis n and critical neutral axis n1. If fc and ft are permissible compressive and tensile stresses, the moment to resistance of the beam, is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | all the above |
| Answer» E. | |
| 315. |
If the modular ratio is m, steel ratio is r and overall depth of a beam is d, the depth of the critical neutral axis of the beam, is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| E. | [E]. |
| Answer» C. [C]. | |
| 316. |
With usual notations the depth of the neutral axis of a balanced section, is given by |
| A. | c/t = (d - n)/n |
| B. | /mc = (d - n)/n |
| C. | /mc = (d + n)/n |
| D. | c/t = n/(d - n) |
| Answer» E. | |
| 317. |
In a combined footing if shear stress exceeds 5 kg/cm², the nominal stirrups provided are: |
| A. | legged |
| B. | legged |
| C. | 0 legged |
| D. | 2 legged |
| Answer» E. | |
| 318. |
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. | L/2 |
| B. | L/4 |
| C. | L/6 |
| D. | L/8 |
| Answer» D. L/8 | |
| 319. |
A simply supported beam 6 m long and of effective depth 50 cm, carries a uniformly distributed load 2400 kg/m including its self weight. If the lever arm factor is 0.85 and permissible tensile stress of steel is 1400 kg/cm², the area of steel required, is |
| A. | 4 cm² |
| B. | 5 cm² |
| C. | 6 cm² |
| D. | 7 cm² |
| Answer» D. 7 cm² | |
| 320. |
If Sb, is the average bond stress on a bar of diameter ‘d’ subjected to maximum stress ‘t’, the length of the embedment ‘l’ is given by |
| A. | = dt/Sb |
| B. | = dt/2Sb |
| C. | = dt/3Sb |
| D. | = dt/4Sb |
| Answer» E. | |
| 321. |
A short column 20 cm × 20 cm in section is reinforced with 4 bars whose area of cross section is 20 sq. cm. If permissible compressive stresses in concrete and steel are 40 kg/cm² and 300 kg/cm², the Safe load on the column, should not exceed |
| A. | ,120 kg |
| B. | 1,200 kg |
| C. | 12,000 kg |
| D. | one of these |
| Answer» C. 12,000 kg | |
| 322. |
If jd is the lever arm and ΣO is the total perimeter of reinforcement of an R.C.C. beam, the bond stress at the section having Q shear force, is |
| A. | /2jdƩO |
| B. | /3jdƩO |
| C. | /jdƩO |
| D. | × Q/jdƩO |
| Answer» D. × Q/jdƩO | |
| 323. |
If the maximum bending moment of a simply supported slab is M Kg.cm, the effective depth of the slab is (where Q is M.R. factor) |
| A. | /100Q |
| B. | /10√Q |
| C. | (M/Q) |
| D. | (M/100Q) |
| Answer» E. | |
| 324. |
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. | 8 d |
| B. | 8 d |
| C. | 8 d |
| D. | 8 d |
| Answer» E. | |
| 325. |
In a doubly-reinforced beam if ‘c’ and ‘t’ are stresses in concrete and tension reinforcement, ‘d’ is the effective depth and ‘n’ is depth of critical neutral axis, the following relationship holds good |
| A. | c/t = n/(d - n) |
| B. | m + c)/t = n/(d + n) |
| C. | t + c)/n = (d + n)/n |
| D. | c/t = (d - n)/t |
| Answer» B. m + c)/t = n/(d + n) | |
| 326. |
If ‘p’ is the net upward pressure on a square footing of side ‘b’ for a square column of side ‘a’, the maximum bending moment is given by |
| A. | .M = pb (c - a)/4 |
| B. | .M = pb (b - a)²/4 |
| C. | .M = pb (b - a)²/8 |
| D. | .M = pb (b + a)/8 |
| E. | .M = pb (b + a)/8 |
| Answer» D. .M = pb (b + a)/8 | |
| 327. |
If the loading on a pre-stressed rectangular beam, is uniformly distributed, the tendon to be provided should be. |
| A. | traight below centroidal axis |
| B. | arabolic with convexity downward |
| C. | arabolic with convexity upward |
| D. | traight above centroidal axis |
| Answer» C. arabolic with convexity upward | |
| 328. |
The zone in which transverse bending is likely to occur may be obtained by drawing a line from the faces of the column making an angle θ° with horizontal where θ° is |
| A. | 0° |
| B. | 5° |
| C. | 0° |
| D. | one of these |
| Answer» C. 0° | |
| 329. |
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. | /x (1 + x/d) + bw |
| B. | x (1 - x/l) + bw |
| C. | x (1 + x/l) + bw |
| D. | ll the above |
| Answer» C. x (1 + x/l) + bw | |
| 330. |
A pile of length ‘L’ carrying a uniformly distributed load ‘W’ per metre length is suspended at two points, the maximum, B.M. at the centre of the pile or at the points of suspension, is |
| A. | L/8 |
| B. | L²/24 |
| C. | L²/47 |
| D. | L²/16 |
| Answer» D. L²/16 | |
| 331. |
If p1 is the vertical intensity of pressure at a depth h on a block of earth weighing w per unit volume and the angle of repose φ, the lateral intensity of pressure p2 is |
| A. | h (1 - cos φ)/(1 + sin φ) |
| B. | h (1 - sin φ)/(1 + sin φ) |
| C. | h (1 - tan φ)/(1 + tan φ) |
| D. | (1 - cos φ)/h (1 + sin φ) |
| Answer» C. h (1 - tan φ)/(1 + tan φ) | |
| 332. |
If the length of a combined footing for two columns l meters 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 x̅ is the distance of centre of gravity of column loads). |
| A. | = L - (l - x̅) |
| B. | = L/2 + (l - x̅) |
| C. | = L/2 - (l + x̅) |
| D. | = L/2 - (l - x̅) |
| Answer» E. | |
| 333. |
Pick up the assumption for the design of a pre-stressed concrete member from the following: |
| A. | transverse plane section remains a plane after bending |
| B. | uring deformation limits, Hook's law is equally applicable to concrete as well as to steel |
| C. | ariation of stress in reinforcement due to changes in external loading is negligible |
| D. | ll the above |
| Answer» E. | |
| 334. |
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. | .496 % |
| B. | .596 % |
| C. | .696 % |
| D. | .796 % |
| Answer» D. .796 % | |
| 335. |
If Ac, Asc and A are areas of concrete, longitudinal steel and section of a R.C.C. column and m and σc are the modular ratio and maximum stress in the configuration of concrete, the strength of column is |
| A. | cAc + m σcAsc |
| B. | c(A - Asc) + m σcAsc |
| C. | c[A + (m - 1)Asc] |
| D. | ll the above |
| Answer» E. | |
| 336. |
A pile of length ‘L’ carrying a uniformly distributed load ‘W’ per metre length is suspended at the centre and from other two points 0.15 L from either end ; the maximum hogging moment will be |
| A. | L²/15 |
| B. | L²/30 |
| C. | L²/60 |
| D. | L²/90 |
| Answer» E. | |
| 337. |
‘P’ is the pre-stressed force applied to the tendon of a rectangular pre-stressed beam whose area of cross section is ‘A’ and sectional modulus is ‘Z’. The maximum stress ‘f’ in the beam, subjected to a maximum bending moment ‘M’, is |
| A. | = (P/'+ (Z/M) |
| B. | = (A/P) + (M/Z) |
| C. | = (P/A) + (M/Z) |
| D. | = (P/A) + (M/6Z) |
| Answer» D. = (P/A) + (M/6Z) | |
| 338. |
Though the effective depth of a T-beam is the distance between the top compression edge to the centre of the tensile reinforcement, for heavy loads, it is taken as |
| A. | /8th of the span |
| B. | /10th of the span |
| C. | /12th of the span |
| D. | /16th of the span |
| Answer» D. /16th of the span | |
| 339. |
In a beam the local bond stress Sb, is equal to |
| A. | hear force/(Leaver arm × Total perimeter of reinforcement) |
| B. | otal perimeter of reinforcement/(Leaver arm × Shear force) |
| C. | eaver arm/(Shear force × Total perimeter of reinforcement) |
| D. | eaver arm/(Bending moment × Total perimeter of reinforcement) |
| Answer» B. otal perimeter of reinforcement/(Leaver arm × Shear force) | |
| 340. |
If the modular ratio is ‘m’, steel ratio is ‘r’ and overall depth of a beam is ‘d’, 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 | |
| 341. |
The advantage of reinforced concrete, is due to |
| A. | onolithic character |
| B. | ire-resisting and durability |
| C. | conomy because of less maintenance cost |
| D. | ll the above |
| Answer» E. | |
| 342. |
The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm² and 250 kg/cm² respectively. If m = 15, the depth of its neutral axis is |
| A. | 0 cm |
| B. | 5 cm |
| C. | 0 cm |
| D. | 5 cm |
| Answer» D. 5 cm | |
| 343. |
If ‘A’ is the sectional area of a pre-stressed rectangular beam provided with a tendon pre-stressed by a force ‘P’ through its centroidal longitudinal axis, the compressive stress in concrete, is |
| A. | /A |
| B. | /P |
| C. | /2A |
| D. | A/P |
| Answer» B. /P | |
| 344. |
In a combined footing if shear stress does not exceed 5 kg/cm², the nominal stirrups provided are |
| A. | legged |
| B. | legged |
| C. | 0 legged |
| D. | 2 legged |
| Answer» C. 0 legged | |
| 345. |
The modular ratio ‘m’ of a concrete whose permissible compressive stress is ‘C’, may be obtained from the equation. |
| A. | = 700/3C |
| B. | = 1400/3C |
| C. | = 2800/3C |
| D. | = 3500/3C |
| Answer» D. = 3500/3C | |
| 346. |
The minimum cube strength of concrete used for a pre-stressed member, is |
| A. | 0 kg/cm² |
| B. | 50 kg/cm² |
| C. | 50 kg/cm² |
| D. | 50 kg/cm² |
| Answer» E. | |
| 347. |
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. | 2 cm |
| B. | cm |
| C. | cm |
| D. | 0 cm |
| Answer» D. 0 cm | |
| 348. |
An R.C.C. column of 30 cm diameter is reinforced with 6 bars 12 mm φ placed symmetrically along the circumference. If it carries a load of 40,000 kg axially, the stress is |
| A. | 9.9 kg/cm² |
| B. | 00 kg/cm² |
| C. | 50 kg/cm² |
| D. | 75 kg/cm² |
| Answer» B. 00 kg/cm² | |
| 349. |
If l₁ and l₂ are the lengths of long and short spans of a two way slab simply supported on four edges and carrying a load w per unit area, the ratio of the loads split into w₁ and w₂ acting on strips parallel to l₂ and l₁ is |
| A. | ₁/w₂ = l₂/l₁ |
| B. | ₁/w₂ = (l₂/l₁)² |
| C. | ₁/w₂ = (l₂/l₁)³ |
| D. | ₁/w₂ = (l₂/l₁)⁴ |
| Answer» E. | |
| 350. |
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. | 7 cm |
| B. | 8 cm |
| C. | 9 cm |
| D. | 0 cm |
| Answer» E. | |