MCQOPTIONS
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MCQOPTIONS
This section includes 374 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The angles between two forces to make their resultant a minimum and a maximum respectively are |
| A. | 0° and 90° |
| B. | 180° and 90° |
| C. | 90° and 180° |
| D. | 180° and 0° |
| Answer» E. | |
| 2. |
From the circular plate of a diameter 6 cm is cut out a circular plate whose diameter is equal to radius of the plate. The C.G. of the remainder shifts from the original position through |
| A. | 0.25 cm |
| B. | 0.50 cm |
| C. | 0.75 cm |
| D. | 1.00 cm |
| Answer» C. 0.75 cm | |
| 3. |
A sphere is resting on two planes BA and BC which are inclined at 45° and 60° respectively with the horizontal. The reaction on the plane BA will be |
| A. | Less than that on BC |
| B. | More than that of BC |
| C. | Equal to that on BC |
| D. | None of these |
| Answer» C. Equal to that on BC | |
| 4. |
In a simple screw jack, the pitch of the screw is 9 mm and length of the handle operating the screw is 45 cm. The velocity ratio of the system is |
| A. | 1.5 |
| B. | 5 |
| C. | 25 |
| D. | 314 |
| Answer» E. | |
| 5. |
If ‘α’ is the angular acceleration of a compound pendulum whose angular displacement is ‘θ’, the frequency of the motion is |
| A. | 2π √(α/θ) |
| B. | (1/2π) √(α/θ) |
| C. | 4π √(α/θ) |
| D. | 2π √(α - θ) |
| Answer» C. 4π √(α/θ) | |
| 6. |
For the given values of initial velocity of projection and angle of inclination of the plane, the maximum range for a projectile projected upwards will be obtained, if the angle of projection is |
| A. | α = π/4 - β/2 |
| B. | α = π/2 + β/2 |
| C. | α = β/2 - π/2 |
| D. | α = π/4 - β/2 |
| Answer» C. α = β/2 - π/2 | |
| 7. |
For a given velocity of a projectile, the range is maximum when the angle of projection is |
| A. | 30° |
| B. | 45° |
| C. | 90° |
| D. | 0° |
| Answer» C. 90° | |
| 8. |
On a ladder resisting on a smooth ground and leaning against a rough vertical wall, the force of friction acts |
| A. | Towards the wall at its upper end |
| B. | Away from the wall at its upper end |
| C. | Upwards at its upper end |
| D. | Downwards at its upper end |
| Answer» D. Downwards at its upper end | |
| 9. |
On a ladder resting on a rough ground and leaning against a smooth vertical wall, the force of friction acts |
| A. | Downwards at its upper end |
| B. | Upwards at its upper end |
| C. | Perpendicular to the wall at its upper end |
| D. | Zero at its upper end |
| Answer» E. | |
| 10. |
One Newton force, is |
| A. | 10³ dynes |
| B. | 10⁴ dynes |
| C. | 10⁵ dynes |
| D. | 10⁶ dynes |
| Answer» D. 10⁶ dynes | |
| 11. |
A symmetrical body is rotating about its axis of symmetry, its moment of inertia about the axis of rotation being 2 kg -m2 and its rate of rotation 2 revolutions/see. The angular momentum of the body in kg-m2/sec is |
| A. | 4 |
| B. | 6 7i |
| C. | 8TC |
| D. | 8 |
| Answer» D. 8 | |
| 12. |
Angular acceleration of a particle may be expressed as |
| A. | Radians/sec² |
| B. | Degrees/sec² |
| C. | Revolutions/sec |
| D. | All the above |
| Answer» E. | |
| 13. |
The total kinetic energy of a hoop of mass 2 kg and radius 4 m sliding with linear velocity 8 m/sec and angular velocity 5 radian/sec is |
| A. | 64 J |
| B. | 400 J |
| C. | 464 J |
| D. | 89 J |
| Answer» D. 89 J | |
| 14. |
A projectile is fired at an angle ‘θ’ to the vertical. Its horizontal range will be maximum when ‘θ’ is |
| A. | 0° |
| B. | 30° |
| C. | 45° |
| D. | 90° |
| Answer» D. 90° | |
| 15. |
A smooth cylinder lying on its convex surface remains |
| A. | In stable equilibrium |
| B. | In unstable equilibrium |
| C. | In neutral equilibrium |
| D. | Out of equilibrium |
| Answer» C. In neutral equilibrium | |
| 16. |
A body is dropped from a height of 100 m and at the same time another body is projected vertically upward with a velocity of 10 m/sec. The two particles will |
| A. | Never meet |
| B. | Meet after 1 sec |
| C. | Meet after 5 sec |
| D. | Meet after 10 sec |
| Answer» E. | |
| 17. |
A solid cylinder of mass M and radius R rolls down an inclined plane without slipping. The acceleration of center of mass of rolling cylinder is (where ‘g’ is acceleration due to gravity and 0 is inclination of plane with horizontal.) |
| A. | (1/3) g sinB |
| B. | (2/3) g cos 9 |
| C. | (2/3) g sin 0 |
| D. | g sin 9 |
| Answer» D. g sin 9 | |
| 18. |
The velocity ratio of the differential wheel and axle is |
| A. | R/r1 - r2 |
| B. | 2R/r1 |
| C. | 3R/r1 - r2 |
| D. | 2R/r1 + r2 |
| Answer» C. 3R/r1 - r2 | |
| 19. |
Two balls of masses 3 kg and 6 kg are moving with velocities of 4 m/sec and 1 m/sec respectively, towards each other along the line of their centers. After impact the 3 kg ball comes to rest. This can happen only if the coefficient of restitution between the balls is |
| A. | 2/3 |
| B. | 1/5 |
| C. | 3/5 |
| D. | 1/3 |
| Answer» C. 3/5 | |
| 20. |
A satellite is said to move in a synchronous orbit if it moves at an altitude of 36,000 km with a maximum velocity of about |
| A. | 7000 km per hour |
| B. | 8000 km per hour |
| C. | 9000 km per hour |
| D. | 11,000 km per hour |
| Answer» E. | |
| 21. |
The unit of moments in M.K.S system, is |
| A. | kg.m |
| B. | kg/m2 |
| C. | kg/sec2 |
| D. | kg/sec |
| Answer» B. kg/m2 | |
| 22. |
‘μ’ is coefficient of friction. A wheeled vehicle travelling on a circular level track will slip and overturn simultaneously if the ratio of its wheel distance to the height of its centroid, is |
| A. | μ |
| B. | 2μ |
| C. | 3μ |
| D. | ½μ |
| Answer» C. 3μ | |
| 23. |
A uniform pyramid and a uniform prism of same height lie with their base on the surface. Which is more stable ? |
| A. | pyramid |
| B. | prism |
| C. | both equally stable |
| D. | none of the above |
| Answer» B. prism | |
| 24. |
One Newton is equivalent to |
| A. | 1 kg. wt |
| B. | 9.81 kg. wt |
| C. | 981 dyne |
| D. | 1/9.81 kg. wt |
| Answer» E. | |
| 25. |
Two forces of 6 Newtons and 8 Newtons which are acting at right angles to each other, will have a resultant of |
| A. | 5 Newtons |
| B. | 8 Newtons |
| C. | 10 Newtons |
| D. | 12 Newtons |
| Answer» D. 12 Newtons | |
| 26. |
The moment of inertia of the shaded portion of the area shown in below figure about the X-axis, is |
| A. | 229.34 cm⁴ |
| B. | 329.34 cm⁴ |
| C. | 429.34 cm⁴ |
| D. | 529.34 cm⁴ |
| Answer» D. 529.34 cm⁴ | |
| 27. |
According to Kennedy's theorem, if three bodies have plane motions, their instantaneous centers lie on |
| A. | A point |
| B. | A straight line |
| C. | Two straight lines |
| D. | A triangle |
| Answer» C. Two straight lines | |
| 28. |
The practical units of work, is |
| A. | Erg |
| B. | Joule |
| C. | Newton |
| D. | Dyne |
| Answer» C. Newton | |
| 29. |
A square hole is punched out of a circular lamina, the diagonal of the square being the radius of the circle. If ‘r’ is the radius of the circle, the C.G. of the remainder from the corner of the square on the circumference will be |
| A. | [r (π + 0.25)]/(π - 0.5) |
| B. | [r (π - 0.5)]/(π + 0.25) |
| C. | [r (π - 0.25)]/(π - 0.5) |
| D. | [r (π + 0.25)]/(π + 0.5) |
| Answer» D. [r (π + 0.25)]/(π + 0.5) | |
| 30. |
A particle moving with a simple harmonic motion, attains its maximum velocity when it passes |
| A. | The extreme point of the oscillation |
| B. | Through the mean position |
| C. | Through a point at half amplitude |
| D. | None of these |
| Answer» C. Through a point at half amplitude | |
| 31. |
A geo-stationary satellite is one which orbits the earth with a velocity of rotation of |
| A. | Moon |
| B. | Earth |
| C. | Sun |
| D. | Pole |
| Answer» C. Sun | |
| 32. |
The maximum value of the horizontal range for a projectile projected with a velocity of 98 m/sec is |
| A. | 98 m |
| B. | 490 m |
| C. | 980 m |
| D. | 1960 m |
| Answer» D. 1960 m | |
| 33. |
The potential energy of a particle falling through a straight shaft drilled through the earth (assumed homogenous and spherical) is proportional to (where r is the distance of’the particle from centre of the earth) |
| A. | log r |
| B. | r |
| C. | r2 |
| D. | 1/r |
| Answer» D. 1/r | |
| 34. |
A square hole is made in a circular lamina, the diagonal of the square is equal to the radius of the circle as shown in below figure the shift in the centre of gravity is |
| A. | r (π - 0.75)/(π - 0.5) |
| B. | r (π - 0.25)/(π - 0.75) |
| C. | r (π - 0.5)/(π - 0.75) |
| D. | r (π - 0.5)/(π - 0.25) |
| Answer» B. r (π - 0.25)/(π - 0.75) | |
| 35. |
Which of the following represents the state of neutral equilibrium? |
| A. | A cube resting on one edge |
| B. | A smooth cylinder lying on a curved surface |
| C. | A smooth cylinder lying on a convex surface |
| D. | None of the above |
| Answer» E. | |
| 36. |
What is the answer to this question? |
| A. | 10.8 t |
| B. | 10.6 t |
| C. | 10.4 t |
| D. | 10.2 t |
| Answer» B. 10.6 t | |
| 37. |
A rigid body is in a stable equilibrium if the application of any force |
| A. | Can raise the CG of the body but cannot lower it |
| B. | Tends to lower the CG of the body |
| C. | Neither raises nor lowers the CG of the body |
| D. | None of above |
| Answer» B. Tends to lower the CG of the body | |
| 38. |
The angle of projection at which the horizontal range and maximum height of a projectile are equal to |
| A. | 36° |
| B. | 45° |
| C. | 56° |
| D. | 76° |
| Answer» E. | |
| 39. |
The unit of Moment of Inertia of a body, is |
| A. | m |
| B. | m² |
| C. | m³ |
| D. | m⁴ |
| Answer» E. | |
| 40. |
The motion of a particle moving with S.H.M. from an extremity to the other, constitutes |
| A. | Half an oscillation |
| B. | One full oscillation |
| C. | Two oscillations |
| D. | None of these |
| Answer» B. One full oscillation | |
| 41. |
If the resultant of two forces ‘P’ and ‘Q’ acting at an angle ‘θ’ makes an angle ‘α’ with ‘P’, then tan α equals |
| A. | P sin θ/P - Q cos θ |
| B. | Q sin θ/P + Q cos θ |
| C. | P sin θ/P + Q tan θ |
| D. | Q sin θ/P + Q sin θ |
| Answer» C. P sin θ/P + Q tan θ | |
| 42. |
If the resultant of two forces has the same magnitude as either of the force, then the angle between the two forces is |
| A. | 30° |
| B. | 45° |
| C. | 60° |
| D. | 120° |
| Answer» E. | |
| 43. |
A light rope is loaded with many equal weights at equal horizontal intervals. The points of suspension on the rope lie on a |
| A. | Parabola |
| B. | Catenary |
| C. | Cycloid |
| D. | Ellipse |
| Answer» B. Catenary | |
| 44. |
A sphere and a cylinder having the same mass and radii start from rest and roll down the same inclined plane. Which body gets to the bottom first? |
| A. | Sphere with greater rotational energy at bottom than cylinder |
| B. | Sphere with lesser rotational energy at bottom than cylinder |
| C. | Cylinder with greater rotational energy at bottom than sphere |
| D. | Both reach the bottom simultaneously with equal rotational energy at bottom |
| Answer» C. Cylinder with greater rotational energy at bottom than sphere | |
| 45. |
A uniform rod 9 m long weighing 40 kg is pivoted at a point 2 m from one end where a weight of 120 kg is suspended. The required force acting at the end in a direction perpendicular to rod to keep it equilibrium, at an inclination 60° with horizontal, is |
| A. | 40 kg |
| B. | 60 kg |
| C. | 10 kg |
| D. | 100 kg |
| Answer» D. 100 kg | |
| 46. |
Time required to stop a car moving with a velocity 20 m/sec within a distance of 40 m, is |
| A. | 2 sec |
| B. | 3 sec |
| C. | 4 sec |
| D. | 5 sec |
| Answer» D. 5 sec | |
| 47. |
The centre of gravity of a homogeneous body is the point at which the whole |
| A. | Volume of the body is assumed to be concentrated |
| B. | Area of the surface of the body is assumed to be concentrated |
| C. | Weight of the body is assumed to be concentrated |
| D. | All the above |
| Answer» D. All the above | |
| 48. |
A Second's pendulum gains 2 minutes a day. To make it to keep correct time its length |
| A. | Must be decreased |
| B. | Must be increased |
| C. | Is not changed but weight of the bob is increased |
| D. | Is not changed but weight of the bob is decreased |
| Answer» C. Is not changed but weight of the bob is increased | |
| 49. |
A body of weight 14 g appears to weight 13 g when weighed by a spring balance in a moving lift. The acceleration of the lift at that moment was |
| A. | 0.5 m/sec² |
| B. | 0.7 m/sec² |
| C. | 1 m/sec² |
| D. | 1 cm/sec² |
| Answer» C. 1 m/sec² | |
| 50. |
Two shots fired simultaneously from the top and bottom of a vertical tower with elevations of 30° and 45° respectively strike a target simultaneously. If horizontal distance of the target from the tower is 1000 m, the height of the tower is |
| A. | 350 m |
| B. | 375 m |
| C. | 400 m |
| D. | 425 m |
| Answer» E. | |