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MCQOPTIONS
This section includes 719 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 601. |
The type of butt joints in common use, is : |
| A. | l = 3a. |
| B. | single inverted V-butt joint |
| C. | double V-butt joint |
| D. | double U-butt joint |
| Answer» B. single inverted V-butt joint | |
| 602. |
The force in BD of the truss shown in below figure is : |
| A. | none of these. |
| B. | 500 kg compressive |
| C. | 500 kg tensile |
| D. | 1500 kg tensile |
| Answer» B. 500 kg compressive | |
| 603. |
The B.M. of a cantilever beam shown in below figure at A, is |
| A. | zero |
| B. | 8 Tm |
| C. | 12 Tm |
| D. | 20 Tm. |
| Answer» B. 8 Tm | |
| 604. |
In a bar of large length when held vertically and subjected to a load at its lower end, its own-weight produces additional stress. The maximum stress will be |
| A. | at the lower cross-section |
| B. | at the built-in upper cross-section |
| C. | at the central cross-section |
| D. | at every point of the bar. |
| Answer» C. at the central cross-section | |
| 605. |
The maximum stress intensity due to a suddenly applied load is x-times the stress intensity produced by the load of the same magnitude applied gradually. The value of x is |
| A. | 2 and 4 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» C. 2 | |
| 606. |
A simply supported beam carrying a uniformly distributed load over its whole span, is propped at the centre of the span so that the beam is held to the level of the end supports. The reaction of the prop will be |
| A. | half the distributed load |
| B. | 3/8th the distributed load |
| C. | 5/8th the distributed load |
| D. | distributed load. |
| Answer» D. distributed load. | |
| 607. |
For a given material Young's modulus is 200 GN/m2 and modulus of rigidity is 80 GN/m2. The value of Poisson's ratio is |
| A. | 0.15 |
| B. | 0.2 |
| C. | 0.25 |
| D. | 0.3 |
| Answer» D. 0.3 | |
| 608. |
A beam of length L is pinned at both ends and is subjected to a concentrated bending couple of moment M at its centre. The maximum bending moment in the beam is |
| A. | |
| B. | M |
| C. | M/2 |
| Answer» B. M | |
| 609. |
The nature of the stress in horizontal members of the truss shown in below figure may be |
| A. | compressive |
| B. | tensile |
| C. | shear |
| D. | zero |
| Answer» C. shear | |
| 610. |
For the same height, the bottom width for no tension, |
| A. | for triangular section is more than rectangular section |
| B. | for rectangular section is more than triangular section |
| C. | for triangular section is same as that of a rectangular section |
| D. | none of these. |
| Answer» D. none of these. | |
| 611. |
A beam of length L supported on two intermediate rollers carries a uniformly distributed load on its entire length. If sagging B.M. and hogging B.M. of the beam are equal, the length of each overhang, is |
| A. | 0.107 L |
| B. | 0.207 L |
| C. | 0.307 L |
| D. | 0.407 L |
| Answer» C. 0.307 L | |
| 612. |
A cantilever beam rectangular in cross-section is subjected to an isolated load at its free end. If the width of the beam is doubled, the deflection of the free end will be changed in the ratio of |
| A. | 8 |
| B. | 43678 |
| C. | 43497 |
| D. | 2 |
| Answer» D. 2 | |
| 613. |
Stress in members of statically determinate simple frames, can be determined by |
| A. | method of joints |
| B. | method of sections |
| C. | graphical solution |
| D. | all the above. |
| Answer» E. | |
| 614. |
The ratio of the tensile stress developed in the wall of a boiler in the circumferential direction to the tensile stress in the axial direction, is |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 1 |
| Answer» D. 1 | |
| 615. |
At either end of a plane frame, maximum number of possible transverse shear forces, are |
| A. | one |
| B. | two |
| C. | three |
| D. | four |
| Answer» B. two | |
| 616. |
If a constant section beam is subjected to a uniform bending moment throughout, its length bends to |
| A. | a circular arc |
| B. | a parabolic arc |
| C. | a catenary |
| D. | none of these. |
| Answer» B. a parabolic arc | |
| 617. |
The force in the member DE of the truss shown in below figure will be |
| A. | zero |
| B. | 2 W tensile |
| C. | 2 W compressive |
| D. | 4 W compressive |
| Answer» D. 4 W compressive | |
| 618. |
The principal stresses at a point are 100, 100 and-200 kgf/cm2, the octo hedral shear stress at the point is : |
| A. | 100 2 kg/cm2 |
| B. | 200 2 kg/cm2 |
| C. | 300 2 kg/cm2 |
| D. | 400 2 kg/cm2 |
| Answer» B. 200 2 kg/cm2 | |
| 619. |
A diagram which shows the variations of the axial load for all sections of the span of a beam, is called |
| A. | bending moment diagram |
| B. | shear force diagram |
| C. | thrust diagram |
| D. | stress diagram |
| Answer» D. stress diagram | |
| 620. |
A member is balanced at its end by two inclined members carrying equal forces. For equilibrium the angle between the inclined bars must be |
| A. | 3° |
| B. | 45° |
| C. | 60° |
| D. | 90° |
| Answer» E. | |
| 621. |
When a rectangular beam is loaded transversely, the maximum compressive stress develops on |
| A. | bottom fibre |
| B. | top fibre |
| C. | neutral axis |
| D. | every cross-section. |
| Answer» C. neutral axis | |
| 622. |
Along the principal plan subjected to maximum principal stress |
| A. | maximum shear stress acts |
| B. | minimum shear stress acts |
| C. | no shear stress acts |
| D. | none of these. |
| Answer» D. none of these. | |
| 623. |
The areas of cross-section of a square beam and a circular beam subjected to equal bending moments, are same. |
| A. | circular beam is more economical |
| B. | square beam is more economical |
| C. | both the beams are equally strong |
| D. | both the beams are equally economical |
| Answer» C. both the beams are equally strong | |
| 624. |
The value of Poisson's ratio always remains |
| A. | greater than one |
| B. | less than one |
| C. | equal to one |
| D. | none of these. |
| Answer» C. equal to one | |
| 625. |
Strain energy of a member may be equated to |
| A. | average resistance x displacement |
| B. | stress x strain x area of its cross-section |
| C. | stress x strain x volume of the member |
| D. | (stress)2 x volume of the member + Young's modulus E. |
| Answer» E. | |
| 626. |
A solid cube is subjected to equal normal forces on all its faces. The volumetric strain will be x-times the linear strain in any of the three axes when |
| A. | x = 1 |
| B. | x = 2 |
| C. | x = 3 |
| D. | x = 4 |
| Answer» D. x = 4 | |
| 627. |
For a stable frame structure, number of members required, is |
| A. | three times the number of joints minus three |
| B. | twice the number of joints minus three |
| C. | twice the number of joints minus two |
| D. | twice the number of joints minus one |
| Answer» C. twice the number of joints minus two | |
| 628. |
For structural analysis, Maxwell's reciprocal theorem can be applied to : |
| A. | plastic structures |
| B. | elastic structures |
| C. | symmetrical structures |
| D. | all the above. |
| Answer» C. symmetrical structures | |
| 629. |
The direction of the reaction at support B of a truss shown in below figure will be |
| A. | East of North |
| B. | West of North |
| C. | East of South |
| D. | West of South |
| Answer» B. West of North | |
| 630. |
The phenomenon of slow extension of materials having constant load, i.e. increasing with the time is called |
| A. | creeping |
| B. | yielding |
| C. | breaking |
| D. | none of these. |
| Answer» B. yielding | |
| 631. |
Hooke's law states that stress and strain are |
| A. | directly proportional |
| B. | inversely proportional |
| C. | curvilinearly related |
| D. | none of these. |
| Answer» B. inversely proportional | |
| 632. |
For a cantilever with a uniformly distributed load W over its entire length L, the maximum bending moment is |
| A. | WL |
| B. | WL |
| C. | WL |
| D. | W2L |
| Answer» C. WL | |
| 633. |
A shaft 9 m long is subjected to a torque 30 t-m at a point 3 m distant from either end. The reactive torque at the nearer end will be |
| A. | 5 tonnes metre |
| B. | 10 tonnes metre |
| C. | 15 tonnes metre |
| D. | 20 tonnes metre |
| Answer» E. | |
| 634. |
Every material obeys the Hooke's law within its |
| A. | elastic limit |
| B. | plastic point |
| C. | limit of proportionality |
| D. | none of these. |
| Answer» D. none of these. | |
| 635. |
While testing a cast iron beam (2.5 cm x 2.5 cm) in section and a metre long simply supported at the ends failed when a 100 kg weight is applied at the centre. The maximum stress induced is : |
| A. | 960 kg/cm2 |
| B. | 980 kg/cm2 |
| C. | 1000 kg/cm2 |
| D. | 1200 kg/cm2. |
| Answer» B. 980 kg/cm2 | |
| 636. |
The neutral axis of a beam cross-section must |
| A. | pass through the centroid of the section |
| B. | be equidistant from the top of bottom films |
| C. | be an axis of symmetry of the section |
| D. | none of these. |
| Answer» B. be equidistant from the top of bottom films | |
| 637. |
In the given below figure, the rivets with maximum stress, are : |
| A. | 1 and 2 |
| B. | 1 and 3 |
| C. | 3 and 4 |
| D. | 2 and 4 |
| Answer» E. | |
| 638. |
The phenomenon of slow growth of strain under a steady tensile stress, is called |
| A. | yielding |
| B. | creeping |
| C. | breaking |
| D. | none of these. |
| Answer» C. breaking | |
| 639. |
The bending moment at C of a portal frame shown in below figure is |
| A. | 8 t-m |
| B. | 4 t-m |
| C. | 28 t-m |
| D. | 16 t-m |
| Answer» E. | |
| 640. |
If the beam is supported so that there are only three unknown reactive elements at the supports. These can be determined by using the following fundamental equation of statics |
| A. | ‚àëH = 0 |
| B. | ‚àëV = 0 |
| C. | ‚àëH = 0; ‚àëH = 0 |
| D. | ‚àëH = 0; ‚àëV = 0; ‚àëM = 0 |
| Answer» E. | |
| 641. |
A simply supported beam (l + 2a) with equal overhangs (a) carries a uniformly distributed load over the whole length, the B.M. changes sign if |
| A. | l > 2a |
| B. | l < 2a |
| C. | l = 2a |
| D. | l = 4a |
| Answer» B. l < 2a | |
| 642. |
A three hinged arch is loaded with an isolated load 1000 kg at a horizontal distance of 2.5 m from the crown, 1 m above the level of hinges at the supports 10 metres apart. The horizontal thrust is |
| A. | 1250 kg |
| B. | 125 kg |
| C. | 750 kg |
| D. | 2500 kg |
| Answer» B. 125 kg | |
| 643. |
The slenderness ratio of a vertical column of square cross- section of 10 cm side and 500 cm long, is |
| A. | 117.2 |
| B. | 17.3 |
| C. | 173.2 |
| D. | 137.2 |
| Answer» D. 137.2 | |
| 644. |
A bending moment may be defined as : |
| A. | Arithmetic sum of the moments of all the forces on either side of the section |
| B. | Arithmetic sum of the forces on either side of the section |
| C. | Algebraic sum of the moments of all the forces on either side of the section |
| D. | None of these. |
| Answer» D. None of these. | |
| 645. |
A composite member shown in below figure was formed at 25°C and was made of two materials a and b. If the coefficient of thermal expansion of a is more than that of b and the composite member is heated upto 45°C, then |
| A. | a will be in tension and b in compression |
| B. | both will be in compression |
| C. | both will be in tension |
| D. | a will be in compression and b in tension. |
| Answer» E. | |
| 646. |
The maximum compressive stress at the top of a beam is 1600 kg/cm2 and the corresponding tensile stress at its bottom is 400 kg/cm2 . If the depth of the beam is 10 cm, the neutral axis from the top, is |
| A. | 2 cm |
| B. | 4 cm |
| C. | 6 cm |
| D. | 8 cm |
| Answer» E. | |
| 647. |
The stress at which extension of a material takes place more quickly as compared to the increase in load, is called |
| A. | elastic point |
| B. | plastic point |
| C. | breaking point |
| D. | yielding point. |
| Answer» E. | |
| 648. |
For a beam of uniform strength keeping its depth constant, the width will vary in proportion to |
| A. | bending moment (M) |
| B. | M |
| C. | M2 |
| D. | none of these. |
| Answer» B. M | |
| 649. |
Shear force for a cantilever carrying a uniformly distributed load over its length, is |
| A. | triangle |
| B. | rectangle |
| C. | parabola |
| D. | cubic parabola. |
| Answer» C. parabola | |
| 650. |
An open-ended cylinder of radius r and thickness t is subjected to internal pressure p. The Young's modulus for the material is E and Poisson's ratio is μ. The longitudinal strain is |
| A. | zero |
| B. | |
| Answer» B. | |