MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The maximum load to which a fillet joint of length L can be subjected to, is |
| A. | 0.7 x S x fillet size x L |
| B. | 2 x S x fillet size x L |
| C. | permissible shear stress x fillet size x L |
| Answer» B. 2 x S x fillet size x L | |
| 2. |
The reaction at support A of the beam shown in below figure, is |
| A. | zero |
| B. | 5 T |
| C. | 10 T |
| D. | 1 T |
| Answer» B. 5 T | |
| 3. |
When two plates butt together and are riveted with two cover plates with two rows of rivets, the joint is known as |
| A. | lap joint |
| B. | butt join |
| C. | single riveted single cover butt joint |
| D. | double riveted double cover butt joint. |
| Answer» E. | |
| 4. |
A member which does not regain its original shape after removed of load producing deformation is said |
| A. | plastic |
| B. | elastic |
| C. | rigid |
| D. | none of these. |
| Answer» B. elastic | |
| 5. |
The ratio of the flexural strengths of two square beams one placed with its two sides horizontal and the other placed with one diagonal vertical, diagonal, is |
| A. | 2 |
| B. | 2 |
| C. | 5 |
| D. | 7 |
| Answer» B. 2 | |
| 6. |
In a square beam loaded longitudinally, shear develops |
| A. | on middle fibre along horizontal plane |
| B. | on lower fibre along horizontal plane |
| C. | on top fibre along vertical plane |
| D. | equally on each fibre along horizontal plane |
| Answer» E. | |
| 7. |
A solid circular shaft of diameter d is subjected to a torque T. The maximum normal stress induced in the shaft, is |
| A. | zero |
| B. | |
| Answer» C. | |
| 8. |
For the beam shown in below figure, the maximum positive bending moment is nearly equal to negative bending moment when L1 is equal to |
| A. | 1.0 L |
| B. | 0.7 L |
| C. | 0.5 L |
| D. | 0.35 L. |
| Answer» E. | |
| 9. |
According to Unwin's formula, the diameter d of a rivet of plate of thickness t is : |
| A. | d = 6.05 t |
| B. | d = 1.5 t + 4 |
| C. | d = 5 t |
| D. | d = t + 1.5 |
| Answer» B. d = 1.5 t + 4 | |
| 10. |
Rankine-Golden formula accounts for direct as well as buckling stress and is applicable to |
| A. | very long columns |
| B. | long columns |
| C. | short columns |
| D. | intermediate columns |
| Answer» E. | |
| 11. |
A member which is subjected to reversible tensile or compressive stress may fail at a stress lower than the ultimate stress of the material. This property of metal, is called |
| A. | plasticity of the metal |
| B. | elasticity of the metal |
| C. | fatigue of the metal |
| D. | workability of the metal. |
| Answer» D. workability of the metal. | |
| 12. |
If the stress produced by a prismatic bar is equal to the working stress, the area of the cross-section of the prismatic bar, becomes |
| A. | zero |
| B. | infinite |
| C. | maximum |
| D. | minimum. |
| Answer» C. maximum | |
| 13. |
In a continuous bending moment curve the point where it changes sign, is called |
| A. | point of inflexion |
| B. | point of contraflexture |
| C. | point of virtual hinge |
| D. | all the above. |
| Answer» E. | |
| 14. |
The ratio of the effective length of a column and minimum radius of gyration of its cross-sectional area, is known |
| A. | buckling factor |
| B. | slenderness ratio |
| C. | crippling factor |
| D. | none of these. |
| Answer» C. crippling factor | |
| 15. |
The bending moment at E for the structure shown in below figure, is |
| A. | zero |
| B. | 10 Tm |
| C. | 20 Tm |
| D. | 40 Tm. |
| Answer» B. 10 Tm | |
| 16. |
The intensity of direct longitudinal stress in the cross-section at any point distant r from the neutral axis, is proportional to |
| A. | r |
| B. | |
| Answer» B. | |
| 17. |
To ascertain the maximum permissible eccentricity of loads on circular columns, the rule generally followed, is |
| A. | middle half rule of columns |
| B. | middle third rule of columns |
| C. | middle fourth rule of columns |
| D. | none of these. |
| Answer» D. none of these. | |
| 18. |
If all the dimensions of a bar are increased in the proportion n : 1, the proportion with which the maximum stress produced in the prismatic bar by its own weight, will increase in the ratio |
| A. | 1 : n |
| B. | n : 1 |
| C. | 0.041666666666667 |
| D. | ############################################################################################################################################################################################################################################################### |
| Answer» C. 0.041666666666667 | |
| 19. |
The following assumption is not true in the theory of pure torsion : |
| A. | The twist along the shaft is uniform |
| B. | The shaft is of uniform circular section throughout |
| C. | Cross-section of the shaft, which is plane before twist remains plane after twist |
| D. | All radii get twisted due to torsion. |
| Answer» E. | |
| 20. |
A three-hinged arch is said to be : |
| A. | statically determinate structure |
| B. | statically indeterminate structure |
| C. | a bent beam |
| D. | none of these. |
| Answer» B. statically indeterminate structure | |
| 21. |
For keeping the stress wholly compressive the load may be applied on a circular column anywhere within a concentric circle of diameter |
| A. | d/2 |
| B. | d/3 |
| C. | d/4 |
| D. | d/8 |
| Answer» D. d/8 | |
| 22. |
A shaft turning 150 r.p.m. is subjected to a torque of 150 kgm. Horse power transmitted by the shaft is |
| A. | π |
| B. | 10 π |
| C. | π2 |
| D. | 1/π |
| Answer» C. œÄ2 | |
| 23. |
A rectangular beam 20 cm wide is subjected to a maximum shearing force of 10, 000 kg, the corresponding maximum shearing stress being 30 kg/cm2. The depth of the beam is |
| A. | 15 cm |
| B. | 20 cm |
| C. | 25 cm |
| D. | 30 cm. |
| Answer» D. 30 cm. | |
| 24. |
If two forces acting at a joint are not along the straight line, then for the equilibrium of the joint |
| A. | one of the forces must be zero |
| B. | each force must be zero |
| C. | forces must be equal and of the same sign |
| D. | forces must be equal in magnitude but opposite in sign. |
| Answer» C. forces must be equal and of the same sign | |
| 25. |
The shape of the bending moment diagram over the length of a beam, carrying a uniformly distributed load is always |
| A. | linear |
| B. | parabolic |
| C. | cubical |
| D. | circular. |
| Answer» C. cubical | |
| 26. |
The B.M. diagram of the beam shown in below figure, is |
| A. | a rectangle |
| B. | a triangle |
| C. | a trapezium |
| D. | a parabola |
| Answer» B. a triangle | |
| 27. |
The range within which a load can be applied on a rectangular column, to avoid any tensile stress, is |
| A. | one-half of the base |
| B. | one-fifth of the base |
| C. | one-fourth of the base |
| D. | one-fifth of the base |
| Answer» C. one-fourth of the base | |
| 28. |
If the width of a simply supported beam carrying an isolated load at its centre is doubled, the deflection of the beam at the centre is changed by |
| A. | 43497 |
| B. | 43678 |
| C. | 2 |
| D. | 8 |
| Answer» B. 43678 | |
| 29. |
A rectangular log of wood is floating in water with a load of 100 N at its centre. The maximum shear force in the wooden log is |
| A. | 50 N at each end |
| B. | 50 N at the centre |
| C. | 100 N at the centre |
| D. | none of these. |
| Answer» D. none of these. | |
| 30. |
The cross sections of the beams of equal length are a circle and a square whose permissible bending stress are same under same maximum bending. The ratio of their flexural weights is, |
| A. | 1.118 |
| B. | 1.338 |
| C. | 1.228 |
| D. | 1.108 |
| Answer» B. 1.338 | |
| 31. |
A reinforced concrete beam is assumed to be made of |
| A. | homogeneous material |
| B. | heterogeneous material |
| C. | isotropic material |
| D. | none of these. |
| Answer» C. isotropic material | |
| 32. |
A cylinder is said to be thin if the ratio of its thickness and diameter, is less than |
| A. | 45658 |
| B. | 43831 |
| C. | 42005 |
| D. | 43739 |
| Answer» E. | |
| 33. |
The force in DB of the truss shown in below figure is |
| A. | 3 W compression |
| B. | W tension |
| C. | 2 W compression |
| D. | 5 W tension |
| Answer» C. 2 W compression | |
| 34. |
As the elastic limit reaches, tensile strain |
| A. | increases more rapidly |
| B. | decreases more rapidly |
| C. | increases in proportion to the stress |
| D. | decreases in proportion to the stress. |
| Answer» B. decreases more rapidly | |
| 35. |
n and j are numbers of members and joints in a frame. It contains redundant members if |
| A. | n = 2j - 3 |
| B. | n = 3j - 2 |
| C. | n < 2j - 3 |
| D. | n < j - 2 |
| Answer» E. | |
| 36. |
The point of contraflexture occurs in |
| A. | cantilever beams only |
| B. | continuous beams only |
| C. | over hanging beams only |
| D. | all types of beams |
| Answer» D. all types of beams | |
| 37. |
If the rivets in adjacent rows are staggered and outermost row has only one rivet, the arrangement of the rivets, is called |
| A. | chain riveting |
| B. | zig-zag riveting |
| C. | diamond riveting |
| D. | none of these. |
| Answer» D. none of these. | |
| 38. |
The shear stress at any section of a shaft is maximum |
| A. | at the centre of the section |
| B. | at a distance r/2 from the centre |
| C. | at the top of the surface |
| D. | at a distance 3/4 r from the centre |
| Answer» D. at a distance 3/4 r from the centre | |
| 39. |
A three hinged parabolic arch hinged at the crown and springings, has a horizontal span of 4.8 m and a central rise of 1 m. It carries a uniformly distributed load of 0.75 tonne per metre over half left hand span. The horizontal thrust at the support will be |
| A. | 10.8 tonnes |
| B. | 1.08 tonnes |
| C. | 1.8 tonnes |
| D. | 0.8 tonnes |
| Answer» C. 1.8 tonnes | |
| 40. |
Pick up the correct assumption of the theory of simple bending |
| A. | The value of the Young's modulus is the same in tension as well as in compression |
| B. | Transverse section of a beam remains plane before and after bending |
| C. | The material of the beam is homogeneous and isotropic |
| D. | The resultant pull or thrust on transverse section of a beam is zero |
| Answer» E. | |
| 41. |
A joint of a frame is subjected to three tensile force P, Q and R equally inclined to each other. If P is 10 tonnes, the other forces will be |
| A. | Q = 10 tonnes and R = zero |
| B. | R + 10 tonnes and Q = zero |
| C. | Q + R = 10 tonnes |
| D. | Q - R = zero |
| Answer» E. | |
| 42. |
In a tension test, the yield stress is 300 kg/cm2, in the octa hedral shear stress at the point is: |
| A. | 100 2 kg/cm2 |
| B. | 150 2 kg/cm2 |
| C. | 200 2 kg/cm |
| D. | 250 2 kg/cm2. |
| Answer» B. 150 2 kg/cm2 | |
| 43. |
The shape of the bending moment diagram over the length of a beam, having no external load, is always |
| A. | linear |
| B. | parabolic |
| C. | cubical |
| D. | circular. |
| Answer» B. parabolic | |
| 44. |
The region of the cross-section of a column in which compressive load may be applied without producing any tensile stress, is known as the core of the cross-section. In circular columns the radius of the core, is |
| A. | one-half of the radius |
| B. | one-third of the radius |
| C. | one-quarter of the radius |
| D. | one-fifth of the radius |
| Answer» D. one-fifth of the radius | |
| 45. |
The ratio of the moment of inertia of a circular plate and that of a square plate for equal depth, is |
| A. | less than one |
| B. | equal to one |
| C. | more than one |
| D. | equal to 3π/16 |
| Answer» E. | |
| 46. |
A column is said to be of medium size if its slenderness ratio is between |
| A. | 20 and 32 |
| B. | 32 and 120 |
| C. | 120 and 160 |
| D. | 160 and 180 |
| Answer» C. 120 and 160 | |
| 47. |
A short masonry pillar is 60 cm x 60 cm in cross-section, the core of the pillar is a square whose side is |
| A. | 17.32 cm |
| B. | 14.14 cm |
| C. | 20.00 cm |
| D. | 22.36 cm |
| Answer» C. 20.00 cm | |
| 48. |
A simply supported wooden beam 150 cm long and having a cross section 16 cm x 24 cm carries a concentrated load, at the centre. If the permissible stress ft = 75 kg/cm2 and fs = 10 kg/cm2 the safe load is |
| A. | 3025 kg |
| B. | 3050 kg |
| C. | 3075 kg |
| D. | 3100 kg. |
| Answer» D. 3100 kg. | |
| 49. |
The section modulus of a rectangular light beam 25 metres long is 12.500 cm3. The beam is simply supported at its ends and carries a longitudinal axial tensile load of 10 tonnes in addition to a point load of 4 tonnes at the centre. The maximum stress in the bottom most fibre at the mid span section, is |
| A. | 13.33 kg/cm2 tensile |
| B. | 13.33 kg/cm2 compressive |
| C. | 26.67 kg/cm2 tensile |
| D. | 26.67 kg/cm2 compressive |
| Answer» D. 26.67 kg/cm2 compressive | |
| 50. |
In a shaft rotated by a couple, the shear force varies |
| A. | from zero at the centre to a maximum at the circumference |
| B. | from minimum at the centre of maximum at the circumference |
| C. | from maximum at the centre to zero at the circumference |
| D. | equally throughout the section |
| Answer» B. from minimum at the centre of maximum at the circumference | |