Civil Engineering MCQ Quiz Hub

1. The velocity of a moving body is
a constant quantity
a scalar quantity
a vector quantity
none of these

2. Periodic time of body moving with simple harmonic motion is
inversely proportional to its angular velocity
inversely proportional to the square of its angular velocity
directly proportional to the square of its angular velocity
directly proportional to its angular velocity

3. A rigid body suspended vertically at a point and oscillating with a small amplitude under the action of the force of gravity is called
second's pendulum
simple pendulum
compounder pendulum
None of these

4. Newton's law of motion of rotation which states, Everybody continues in its state of rest or uniform motion of rotation about an axis unless it is acted upon by some external torque is
first law of motion
second law of motion
third law of motion
fourth law of motion

5. According to Kennedy's theorem, if three bodies have plane motion, their instantaneous centres lie on
a triangle
two straight lines
a straight line
a point

6. One Newton force, isx
103 dynes
104 dynes
105 dynes
106 dynes

7. The motion of a particle moving with S.H.M. from an extremely to the other, constitutes
one full oscillation
two oscillations
half an oscillation
None of these

8. The angle which an inclined surface makes with the horizontal when a body placed on its is on the point of moving down, is called
angle of inclination
angle of friction
angle of repose
None of these

9. Which one of the following laws is not applicable to a simple pendulum?
The time period is inversely proportional to √g where g is the acceleration due to gravity
The time period is proportional to √l where l is length
The time period does not depend on its magnitude
The time period is proportional to its length l

10. The vehicle moving on a level circular path will exert pressure such that reaction on
inner wheels will be more
outer wheels will be more
inner as well as outer wheels will be equal
none of these

11. Engineer's units of force, is
Newton and dyne in absolute units
Dyne in absolute units
Newton in absolute units
All the above

12. The shape of a suspended cable under its own weight is
catenary
circular
elliptical
parabolic

13. A number of forces acting simultaneously on a particle of a body
may be replace by a couple
may be replaced by a single force through C.G. of the body
may be replaced by a single fore
may not be replaced by a single force

14. The maximum frictional force which comes into play, when a body just begins to slide over the surface of a other body, is known as
limiting friction
rolling friction
sliding friction
none of these

15. If rain falls in the opposite direction of the movement of a pedestrian, he has to hold his umbrella
more inclined when moving
less inclined when moving
less inclined when standing
more inclined when standing

16. Centre of gravity of a thin hollow cone lies on the axis of symmetry at a height of
one half of the total height above base
one fourth of the total height above base
one third of the total height above base
none of these

17. Centrifugal force acting on a body, moving along a circular path, will be
equal and opposite to centripetal force
equal and similar to centripetal force
inversely proportional to centripetal force
proportional to centripetal force

18. The total time of collision and restitution of two bodies is called
period of collision
period of impact
time of collision
all the above

19. Two forces act an angle of 120°. If the greater force is 50 kg and their resultant is perpendicular to the smaller force, the smaller force is
10 kg
20 kg
25 kg
35 kg

20. The product of mass and velocity of a moving a body is called
impulse
power
moment
momentum

21. The units of inertia of mass, are
kg/m
kg/m2
kg-m2
m4

22. The direction of projection should bisect the angle between the inclined plane and the vertical for a range of a projectile on inclined plane
to be maximum
to be minimum
to be zero
None of these

23. Newton's Law of Motion is
to every action, there is always an equal and opposite
the rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction, in which the force acts
everybody continues in its state of rest or of uniform motion, in a straight line, unless it is acted upon by some external force
all the above

24. The necessary condition of equilibrium of a body is
algebraic sum of the moments of the forces about a point must be zero
algebraic sum of vertical components of all the forces must be zero
algebraic sum of horizontal components of all the forces must be zero
all a, b and c

25. The path traced by a projectile in the sky, is
parabolic
elliptical
straight line
circular

26. A particle moving with a simple harmonic motion attains its maximum velocity when it passes
through point at half amplitude
the extreme point of the oscillation
through the mean position
none of these

27. The force which produces a acceleration of 1 m/sec2 in a mass of one kg, is called
Joule
Dyne
Newton
Energy

28. A stone is whirled in a vertical circle, the tension in the string is maximum
when the string is horizontal
when the stone is at the lowest position
when the stone is at the highest position
at all the positions

29. The unit of force in C.G.S. system of units is called
kg
dyne
newton
all the above

30. when a body in equilibrium undergoes an infinitely small displacement work imagined to be done, is known as
Imaginary work
Negative work
Virtual work
None of these

31. If the angle between the applied force and the direction of motion of a body is between 90o and 180o, the work done is called
Virtual work
Imaginary work
Zero work
Negative work

32. If the gravitational acceleration at any place is doubled, the weight of a body will
Be reduced to half
Be doubled
Not be affected
None of these

33. 4. The locus of the instantaneous centre of a moving rigid body, is
Straight line
Involute
Centroid
Spiral

34. The frequency of oscillation on moon as compare to that on earth, will be
2.44 times more
2.44 times less
3 times less
3 times more

35. One-half of a vibration of a body, is called
Period time
Oscillation
Beat
Amplitude

36. A jet engine works on the principle of
Conservation of energy
Conservation of linear momentum
Conservation of mass
Conservation of mass and momentum

37. The angle which an inclined surface makes with the horizontal when a body placed on the point of moving down, is called
Angle of repose
Angle of friction
Angle of inclination
None of the above

38. The velocity of a moving body is
A vector quantity
A scalar quantity
A constant quantity
None of these

39. A smooth cylinder lying on its convex surface remains
In stable equilibrium
In unstable equilibrium
In neutral equilibrium
Out of equilibrium

40. The unit of impulse, is
kg. m / sec
kg. m2 / sec
kg. m / sec 2
kg2. m / sec

41. The unit of moments in M.K.S. system, is
kg-m
kg / m2
kg /sec2
kg /sec

42. The unit of moment of inertia of an area,
kg/m
kg/m2
m4
m3

43. Moment of inertia of a squares of side b about an axis through its centre of gravity, is
b3/4
b4/12
b44/3
b4/8

44. The unit of inertia of mass,
kg/m
kg/m2
kg-m2
m3

45. Polar moment of inertia is
Same as moment of inertia
Applicable to masses whereas moment of inertia is applicable to area only
The moment of inertia for an area relative to a linear or axis perpendicular to the plane of the area
The moment of inertia for an area relative to a line or axis parallel to the centroidal axis

46. The moment of inertia of a thin spherical shell is
Mr4/2
Mr2
2/3 Mr2
2/5 Mr2

47. The centre of gravity of a plane laminate will not be at its geometrical centre if it is a
Circle
Equilateral triangle
Rectangle
Right angled triangle

48. The centre of gravity of a homogeneous body is the point at which the whole
Volume of the body is assumed to be concentrated
Area of the surface of the body is assumed to be concentrated
Weight of the body is assumed to be concentrated
All of the above

49. The centre of gravity of a quadrant of a circle lies along its central radius at a distance of
0.2 R
0.3 R
0.4 R
0.6 R

50. The centre of gravity of a right circular cone lies on its axis of symmetry at a height of
h / 2
h / 3
h / 4
h / 5

51. The path traced by a projectile in the sky, is
Circular
Parabolic
Elliptical
Catenary

52. A projectile is fired at an angle theta to the vertical. It's horizontal range will be maximum when theta is
0o
30o
45o
60o

53. For maximum range of a projectile, the angle of projection should be
30o
45o
60o
none of these

54. Time of flight of a projectile on a horizontal, plane is
2u sin α/ g
2u cos α/ g
2u tan α/ g
2u cot α/ g

55. A particle in simple harmonic motion while passing through mean position will have
Maximum kinetic energy and maximum potential energy
Maximum kinetic energy and minimum potential energy
Minimum kinetic energy and maximum potential energy
Minimum kinetic energy and minimum potential energy

56. The periodic time of a body moving in simple harmonic motion is
Directly proportional to its angular velocity
Directly proportional to the weight of the body
Directly proportional to the momentum of swinging body
Inversely proportional to the angular velocity

57. For a body moving with simple harmonic motion, the number of cycles per second, is known as its
Oscillation
Amplitude
Periodic time
Frequency

58. In a simple harmonic motion, acceleration of a particle is proportional to
Rate of change of velocity
Displacement
Velocity
Direction

59. The motion of a particle moving with simple harmonic motion, from an extremity to the other, constitutes
Half an oscillation
One an oscillation
Two oscillations
None of the above

60. Kinetic friction is
Maximum value of frictional force when a body is about to move
Friction between two well lubricated bodies
Friction force acting when the body is in motion
Friction force which keeps a body in motion