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MCQOPTIONS
This section includes 392 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 351. |
For determining the support reactions at A and B of a three hinged arch, points B and C are joined and produced to intersect the load line at D and a line parallel to the load line through A at D'. Distances AD, DD' and AD' when measured were 4 cm, 3 cm and 5 cm respectively. The angle between the reactions at A and B is |
| A. | 30° |
| B. | 45° |
| C. | 60° |
| D. | 90° |
| Answer» E. | |
| 352. |
The eccentricity (e) of a hollow circular column, external diameter 25 cm, internal diameter 15 cm for an eccentric load 100 t for non-development of tension, is |
| A. | 2.75 cm |
| B. | 3.00 cm |
| C. | 3.50 cm |
| D. | 4.25 cm |
| Answer» E. | |
| 353. |
Total strain energy theory for the failure of a material at elastic limit, is known |
| A. | Guest's or Trecas' theory |
| B. | St. Venant's theory |
| C. | Rankine's theory |
| D. | Haig's theory |
| Answer» E. | |
| 354. |
At yield point of a test piece, the material |
| A. | obeys Hooke's law |
| B. | behaves in an elastic manner |
| C. | regains its original shape on removal of the load |
| D. | undergoes plastic deformation. |
| Answer» E. | |
| 355. |
Pick up the incorrect statement from the following : The torsional resistance of a shaft is directly proportional to |
| A. | modulus of rigidity |
| B. | angle of twist |
| C. | reciprocal of the length of the shaft |
| D. | moment of inertia of the shaft section. |
| Answer» E. | |
| 356. |
Principal planes are subjected to |
| A. | normal stresses only |
| B. | tangential stresses only |
| C. | normal stresses as well as tangential stresses |
| D. | none of these. |
| Answer» B. tangential stresses only | |
| 357. |
The general expression for the B.M. of a beam of length l is the beam carries |
| A. | a uniformly distributed load w/unit length |
| B. | a load varying linearly from zero at one end to w at the other end |
| C. | an isolated load at mid span |
| D. | none of these. |
| Answer» B. a load varying linearly from zero at one end to w at the other end | |
| 358. |
In plastic analysis, the shape factor for a circular section, is |
| A. | 1.5 |
| B. | 1.6 |
| C. | 1.7 |
| D. | 1.75 |
| Answer» D. 1.75 | |
| 359. |
The degree of indeterminacy of the frame in the given figure, is |
| A. | zero |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» C. 2 | |
| 360. |
If Q is load factor, S is shape factor and F is factor of safety in elastic design, the following: |
| A. | Q = S + F |
| B. | Q = S - F |
| C. | Q = F - S |
| D. | Q = S x F |
| Answer» E. | |
| 361. |
A spring of mean radius 40 mm contains 8 action coils of steel (N = 80000 N/mm2), 4 mm in diameter. The clearance between the coils being 1 mm when unloaded, the minimum compressive load to remove the clearance, is |
| A. | 25 N |
| B. | 30 N |
| C. | 35 N |
| D. | 40 N |
| Answer» D. 40 N | |
| 362. |
The strain energy stored in a spring when subjected to greatest load without being permanently distorted, is called |
| A. | stiffness |
| B. | proof resilience |
| C. | proof stress |
| D. | proof load. |
| Answer» C. proof stress | |
| 363. |
In the truss shown in given figure the force in member DC is |
| A. | 100 t compressive |
| B. | 100 t tensile |
| C. | zero |
| D. | indeterminate |
| Answer» D. indeterminate | |
| 364. |
A rolled steel joist is simply supported at its ends and carries a uniformly distributed load which causes a maximum deflection of 10 mm and slope at the ends of 0.002 radian. The length of the joist will be, |
| A. | 10 m |
| B. | 12 m |
| C. | 14 m |
| D. | 16 m |
| Answer» E. | |
| 365. |
The forces in the members of simple trusses, may be analysed by |
| A. | graphical method |
| B. | method of joints |
| C. | method of sections |
| D. | all the above. |
| Answer» E. | |
| 366. |
For calculating the allowable stress of long columns. The empirical formula , is known as |
| A. | Straight line formula |
| B. | Parabolic formula |
| C. | Perry's formula |
| D. | Rankine's formula. |
| Answer» B. Parabolic formula | |
| 367. |
The force in BF of the truss shown in given figure, is |
| A. | 4t tension |
| B. | 4t compression |
| C. | 4.5t tension |
| D. | 4.5t compression |
| Answer» E. | |
| 368. |
The load on a spring per unit deflection, is called |
| A. | stiffness |
| B. | proof resilience |
| C. | proof stress |
| D. | proof load. |
| Answer» B. proof resilience | |
| 369. |
A steel bar 20 mm in diameter simply-supported at its ends over a total span of 40 cm carries a load at its centre. If the maximum stress induced in the bar is limited to N/mm2, the bending strain energy stored in the bar, is |
| A. | 411 N mm |
| B. | 511 N mm |
| C. | 611 Nmm |
| D. | 711 N mm |
| Answer» D. 711 N mm | |
| 370. |
A material may fail if |
| A. | maximum principal stress exceeds the direct stress σ0 |
| B. | maximum strain exceeds |
| C. | maximum shear stress exceeds |
| D. | total strain energy exceeds |
| Answer» E. | |
| 371. |
m1 and m2 are the members of two individual simple trusses of a compound truss. The compound truss will be rigid and determinate if |
| A. | m = m1 + m2 |
| B. | m = m1 + m2 + 1 |
| C. | m = m1 + m2 + 2 |
| D. | m = m1 + m2 + 3 |
| Answer» E. | |
| 372. |
A shaft subjected to a bending moment M and a torque T, experiences |
| A. | maximum bending stress = |
| B. | maximum shear stress = |
| C. | both (a) and (b) |
| D. | neither (a) nor (b) |
| Answer» D. neither (a) nor (b) | |
| 373. |
Keeping the depth d constant, the width of a cantilever of length l of uniform strength loaded with a uniformly distributed load w varies from zero at the free end and |
| A. | at the fixed end |
| B. | at the fixed end |
| C. | at the fixed end |
| D. | at the fixed end |
| Answer» D. at the fixed end | |
| 374. |
In the truss shown in the given figure, the force in member BC is |
| A. | 100 t compressive |
| B. | 100 t tensile |
| C. | zero |
| D. | indeterminate |
| Answer» D. indeterminate | |
| 375. |
The forces acting normally on the cross section of a bar shown in the given figure introduce |
| A. | compressive stress |
| B. | tensile stress |
| C. | shear stress |
| D. | none of these. |
| Answer» C. shear stress | |
| 376. |
A cantilever of length 2 cm and depth 10 cm tapers in plan from a width 24 cm to zero at its free end. If the modulus of elasticity of the material is 0.2 x 106 N/mm2, the deflection of the free end, is |
| A. | 2 mm |
| B. | 3 mm |
| C. | 4 mm |
| D. | 5 mm |
| Answer» E. | |
| 377. |
The forces acting on the bar as shown in the given figure introduce |
| A. | compressive stress |
| B. | tensile stress |
| C. | shear stress |
| D. | none of these. |
| Answer» D. none of these. | |
| 378. |
Beams composed of more than one material, rigidly connected together so as to behave as one piece, are known as |
| A. | Compound beams |
| B. | Indeterminate beams |
| C. | Determinate beams |
| D. | Composite beams. |
| Answer» E. | |
| 379. |
Stress may be defined as |
| A. | force per unit length |
| B. | force per unit volume |
| C. | force per unit area |
| D. | none of these. |
| Answer» D. none of these. | |
| 380. |
The force in BC of the truss shown in the given figure, is |
| A. | 3.0t compression |
| B. | 3.0t tension |
| C. | t tension |
| D. | t compression |
| Answer» D. t compression | |
| 381. |
In the cable shown in the given figure, the minimum tension occurs at |
| A. | A |
| B. | B |
| C. | C |
| D. | between A and C |
| Answer» D. between A and C | |
| 382. |
Stress may be expressed in Newtons |
| A. | per millimetre square (N/mm2) |
| B. | per centimetre square (N/cm2) |
| C. | per metre square (N/m2) |
| D. | none of these. |
| Answer» B. per centimetre square (N/cm2) | |
| 383. |
By applying the static equations i.e. ΣH = 0, ΣV = 0 and ΣM = 0, to a determinate structure, we may determine |
| A. | supporting reactions only |
| B. | shear forces only |
| C. | bending moments only |
| D. | internal forces only |
| Answer» E. | |
| 384. |
A material is said to be perfectly elastic if |
| A. | it regains its original shape on removal of the load |
| B. | It regains its original shape partially on removal of the load |
| C. | it does not regain its original shape at all |
| D. | none of these. |
| Answer» B. It regains its original shape partially on removal of the load | |
| 385. |
Shear strain energy theory for the failure of a material at elastic limit, is due to |
| A. | Rankine |
| B. | Guest or Trecas |
| C. | St. Venant |
| D. | Haig |
| Answer» E. | |
| 386. |
In case of principal axes of a section |
| A. | sum of moment of inertia is zero |
| B. | difference of moment inertia is zero |
| C. | product of moment of inertia is zero |
| D. | none of these. |
| Answer» D. none of these. | |
| 387. |
A material which obeys Hook's law, is subjected to direct stress σ0. At its elastic limit, the following statement is true, |
| A. | Strain is equal to |
| B. | Maximum shear stress = |
| C. | Strain energy = |
| D. | Shear strain energy = |
| Answer» E. | |
| 388. |
The normal component of a force inclined through θ° is obtained by multiplying the force by |
| A. | sin θ |
| B. | cos θ |
| C. | tan θ |
| D. | sin θ cos θ |
| Answer» E. | |
| 389. |
If a concrete column 200 x 200 mm in cross-section is reinforced with four steel bars of 1200 mm2 total cross-sectional area. Calculate the safe load for the column if permissible stress in concrete is 5 N/mm2 and Es is 15 Ec |
| A. | 264 MN |
| B. | 274 MN |
| C. | 284 MN |
| D. | 294 MN |
| Answer» D. 294 MN | |
| 390. |
The point of contraflexure is the point where |
| A. | B.M. changes sign |
| B. | B.M. is maximum |
| C. | B.M. is minimum |
| D. | S.F. is zero. |
| Answer» B. B.M. is maximum | |
| 391. |
A load of 1960 N is raised at the end of a steel wire. The minimum diameter of the wire so that stress in the wire does not exceed 100 N/mm2 is : |
| A. | 4.0 mm |
| B. | 4.5 mm |
| C. | 5.0 mm |
| D. | 5.5 mm |
| Answer» D. 5.5 mm | |
| 392. |
The assumption in the theory of bending of beams, is : |
| A. | material is homogeneous |
| B. | material is isotropic |
| C. | Young's modulus is same in tension as well as in compression |
| D. | each layer is independent to expand or to contract |
| Answer» E. | |