civil engineering MCQs – Page 276

Practise multiple-choice questions from civil engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

civil engineering Mcqs
5501. Forces are called concurrent when their lines of action meet in_______________?
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A. different planes

B. two points

C. perpendicular planes

D. one point

E. plane

5502. Which of the following is not the unit of work, energy and heat ?
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A. kcal

B. kWhr

C. hp

D. kg m

E. hp hr

5503. In ideal machines________________?
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A. mechanical advantage is greater than velocity ratio

B. mechanical advantage is equal to velocity ratio

C. mechanical advantage is unity

D. none of the above.

E. mechanical advantage is less than velocity ratio

5504. Effect of a force on a body depends upon________________?
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A. direction

B. position or line of action

C. magnitude

D. none of the above

E. all of the above

5505. The C.G. of a right circular solid cone of height h lies at the following distance from the base_____________?
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A. h/6

B. 3/i/5

C. h/2

D. J/3

E. h/4
5506. Which one of the following statements is not correct_________________?
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A. the tangent of the angle of friction is equal to coefficient of friction

B. none of the above

C. the sine of the angle of repose is equal to coefficient to friction

D. the tangent of the angle of repose is equal to coefficient of friction

E. the angle of repose is equal to angle of friction

5507. Coefficient of friction is the__________________?
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A. angle between normal reaction and the resultant of normal reaction and the limiting friction

B. tangent of angle of repose

C. the friction force acting when the body is just about to move

D. ratio of limiting friction and normal reaction

E. the friction force acting when the body is in motion

5508. The forces, which meet at one point, but their lines of action do not lie in a plane, are called______________?
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A. none of the above

B. intersecting forces

C. coplanar non-concurrent forces

D. non-coplanar non-concurrent forces

E. non-coplanar concurrent forces
5509. The C.G. of a solid hemisphere lies on the central radius 3r_______________?
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A. at distance from the plane base or

B. at distance from the plane base 3r

C. at distance from the plane base 3r

D. at distance from the plane base 3r

E. at distance from the plane base

5510. Angle oT friction is the___________________?
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A. the ratio of minimum friction force to the friction force acting when the body is just about to move

B. the ratio of minimum friction force to friction force acting when the body is in motion

C. ratio of limiting friction and normal reaction

D. angle between normal reaction and the resultant of normal reaction and the limiting friction

E. ratio of static and dynamic friction

5511. The units of moment of inertia of an area are_______________?
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A. m4

B. kg/m2

C. kg/m4

D. m3

E. kg m2

5512. A number of forces acting at a point will be in equilibrium if_________________?
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A. their total sum is zero

B. two resolved parts in two directions at right angles are equal

C. sum of resolved parts in any two per-pendicular directions are both zero

D. all of them are inclined equally

E. none of the above

5513. The weight of a body is due to____________________?
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A. force of attraction experienced by par-ticles

B. gravitational pull exerted by the earth

C. gravitational force of attraction towards the centre of the earth

D. forces experienced by body in atmos-phere

E. centripetal force of earth

5514. On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be__________________?
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A. away from the wall at its upper end

B. upwards at its upper end

C. towards the wall at its upper end

D. none of the above

E. downwards at its upper end

5515. Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction__________________?
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A. horizontally

B. at an angle equal to the angle of friction to the inclined plane

C. along the plane

D. unpredictable

E. vertically

5516. If a suspended body is struck at the centre of percussion, then the pressure on die axis passing through the point of suspension will be___________________?
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A. maximum

B. same as the force applied

C. infinity

D. minimum

E. zero
5517. Which of the following is not the unit of power ?
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A. kcal/sec

B. hp (horse power)

C. kg m/sec

D. kW (kilowatt)

E. kcal/kg sec
5518. In the lever of third order, load W, effort P and fulcrum F are oriented as follows_________________?
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A. W, P and F all on one side

B. P between W and F

C. none of the above

D. W between P and F

E. F between W and P

5519. If three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either__________________?
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A. at least two of them must meet

B. be all parallel

C. none of the above

D. all the above are correct

E. meet in a point

5520. The resolved part of the resultant of two forces inclined at an angle 9 in a given direction is equal to__________________?
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A. the algebraic sum of the resolved parts of the forces in the given direction

B. the sum of the resolved parts of the forces in the given direction

C. the sum of the forces multiplied by the sine of 9

D. the difference of the forces multiplied by the cosine of 9

E. the sum of the forces multiplied by the tangent of 9