MCQOPTIONS
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MCQOPTIONS
This section includes 65 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. |
A semi-circular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi-cricular disc and horizontal surface is i. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will~! |
| A. | remain horizontal |
| B. | slant up towards direction of pull |
| C. | slant down towards direction of pull |
| D. | unpredictable |
| Answer» D. unpredictable | |
| 2. |
The center of percussion of the homogeneous rod of length L suspended at the top will be%! |
| A. | L/2 |
| B. | L/3 |
| C. | 3L/4 |
| D. | 2L/3 |
| Answer» E. | |
| 3. |
Which of the following is the locus of a point that moves in such a manner that its distance from a fixed point is equal to its distance from a fixed line multiplied by a constant greater than one%! |
| A. | ellipse |
| B. | hyperbola |
| C. | parabola |
| D. | circle |
| Answer» C. parabola | |
| 4. |
Center of gravity of a solid cone lies on the axis at the height%! |
| A. | one-fourth of the total height above base |
| B. | one-third of the total height above base |
| C. | one-half of the total height above base |
| D. | three-eighth of the total height above the base |
| Answer» B. one-third of the total height above base | |
| 5. |
*/*_The co-efficient of friction depends upon? |
| A. | nature of surfaces |
| B. | area of contact |
| C. | shape of the surfaces |
| D. | ail of the above. |
| Answer» B. area of contact | |
| 6. |
*/*_Center of gravity of a solid cone lies on the axis at the height? |
| A. | one-fourth of the total height above base |
| B. | one-third of the total height above base |
| C. | one-half of the total height above base |
| D. | three-eighth of the total height above the base |
| Answer» B. one-third of the total height above base | |
| 7. |
*/*_The center of percussion of the homogeneous rod of length L suspended at the top will be? |
| A. | L/2 |
| B. | L/3 |
| C. | 3L/4 |
| D. | 2L/3 |
| Answer» E. | |
| 8. |
*/*_Which of the following is the locus of a point that moves in such a manner that its distance from a fixed point is equal to its distance from a fixed line multiplied by a constant greater than one? |
| A. | ellipse |
| B. | hyperbola |
| C. | parabola |
| D. | circle |
| Answer» C. parabola | |
| 9. |
*/*_From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the center of circular plate? |
| A. | 0.5 cm |
| B. | 1.0 cm |
| C. | 1.5 cm |
| D. | 2.5 cm |
| Answer» B. 1.0 cm | |
| 10. |
*/*_Which is the correct statement about law of polygon of forces ?? |
| A. | if any number of forces acting at a point can be represented by the sides of a polygon taken in order, then the forces are in equilibrium |
| B. | if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then the forces are in equilibrium |
| C. | if a polygon representing forces acting at a point is closed then forces are in equilibrium |
| D. | if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon taken in order, then the forces are in equilibrium |
| Answer» E. | |
| 11. |
*/*_In ideal machines? |
| A. | mechanical advantage is greater than velocity ratio |
| B. | mechanical advantage is equal to velocity ratio |
| C. | mechanical advantage is less than velocity ratio |
| D. | mechanical advantage is unity |
| Answer» C. mechanical advantage is less than velocity ratio | |
| 12. |
*/*_Which of the following is the example of lever of first order?? |
| A. | Arm of man |
| B. | Pair of scissors |
| C. | Pair of clinical tongs |
| D. | All of the above |
| Answer» E. | |
| 13. |
*/*_If a rigid body is in equilibrium under the action of three forces, then? |
| A. | these forces are equal |
| B. | the lines of action of these forces meet in a point |
| C. | the lines of action of these forces are parallel |
| D. | (B) and (C) above |
| Answer» E. | |
| 14. |
*/*_Limiting force of friction is the? |
| A. | Tangent of angle between normal reaction and the resultant of normal reaction and limiting friction |
| B. | Ratio of limiting friction and normal reaction |
| C. | The friction force acting when the body is just about to move |
| D. | The friction force acting when the body is in motion |
| Answer» D. The friction force acting when the body is in motion | |
| 15. |
*/*_A body moves, from rest with a constant acceleration of 5 m per sec. The distance covered in 5 sec is most nearly? |
| A. | 38 m |
| B. | 62.5 m |
| C. | 96 m |
| D. | 124 m |
| Answer» C. 96 m | |
| 16. |
*/*_A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve? |
| A. | catenary |
| B. | parabola |
| C. | hyperbola |
| D. | elliptical |
| Answer» C. hyperbola | |
| 17. |
*/*_According to principle of transmissibility of forces, the effect of a force upon a body is? |
| A. | Maximum when it acts at the center of gravity of a body |
| B. | Different at different points in its line of action |
| C. | The same at every point in its line of action |
| D. | Minimum when it acts at the C.G. of the body |
| Answer» D. Minimum when it acts at the C.G. of the body | |
| 18. |
*/*_Which of the following is not a scalar quantity? |
| A. | mass |
| B. | volume |
| C. | density |
| D. | acceleration. |
| Answer» E. | |
| 19. |
*/*_The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is as per the principle of? |
| A. | forces |
| B. | independence of forces |
| C. | balance of force |
| D. | resolution of forces. |
| Answer» E. | |
| 20. |
*/*_Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction? |
| A. | along the plane |
| B. | horizontally |
| C. | vertically |
| D. | at an angle equal to the angle of friction to the inclined plane |
| Answer» E. | |
| 21. |
*/*_A particle inside a hollow sphere of radius r, having coefficient of friction -rr can rest upto height of? |
| A. | r/2 |
| B. | r/A |
| C. | r/% |
| D. | 0.134 r |
| Answer» E. | |
| 22. |
*/*_Coulomb friction is the friction between? |
| A. | bodies having relative motion |
| B. | two dry surfaces |
| C. | two lubricated surfaces |
| D. | solids and liquids |
| Answer» B. two dry surfaces | |
| 23. |
_ Which of the following do not have identical dimensions?$? |
| A. | Momentum and impulse |
| B. | Torque and energy |
| C. | Torque and work |
| D. | Moment of a force and angular momentum |
| Answer» E. | |
| 24. |
_ If a suspended body is struck at the centre of percussion, then the pressure on die axis passing through the point of suspension will be$? |
| A. | Maximum |
| B. | Minimum |
| C. | Zero |
| D. | Infinity |
| Answer» D. Infinity | |
| 25. |
_ A particle inside a hollow sphere of radius r, having coefficient of friction -rr can rest upto height of$? |
| A. | r/2 |
| B. | r/A |
| C. | r/% |
| D. | 0.134 r |
| Answer» E. | |
| 26. |
_ Coulomb friction is the friction between$? |
| A. | bodies having relative motion |
| B. | two dry surfaces |
| C. | two lubricated surfaces |
| D. | solids and liquids |
| Answer» B. two dry surfaces | |
| 27. |
_ Forces are called concurrent when their lines of action meet in$? |
| A. | one point |
| B. | two points |
| C. | plane |
| D. | perpendicular planes |
| Answer» B. two points | |
| 28. |
_ When trying to turn a key into a lock, following is applied$? |
| A. | coplanar force |
| B. | non-coplanar forces |
| C. | moment |
| D. | couple |
| Answer» E. | |
| 29. |
_ A number of forces acting at a point will be in equilibrium if$? |
| A. | Their total sum is zero |
| B. | Two resolved parts in two directions at right angles are equal |
| C. | Sum of resolved parts in any two perpendicular directions are both zero |
| D. | All of them are inclined equally |
| Answer» D. All of them are inclined equally | |
| 30. |
_ Two non-collinear parallel equal forces acting in opposite direction$? |
| A. | balance each other |
| B. | constitute a moment |
| C. | constitute a couple |
| D. | constitute a moment of couple |
| Answer» D. constitute a moment of couple | |
| 31. |
_ A body of weight W on inclined plane of a being pulled up by a horizontal force P will be on the point of motion up the plane when P is equal to$? |
| A. | W |
| B. | W sin (a + $) |
| C. | Wtan(a + <|)) |
| D. | Wan(a-) |
| Answer» D. Wan(a-) | |
| 32. |
_ Angle of friction is the$? |
| A. | Angle between normal reaction and the resultant of normal reaction and the limiting friction |
| B. | Ratio of limiting friction and normal reaction |
| C. | The ratio of minimum friction force to the friction force acting when the body is just about to move |
| D. | The ratio of minimum friction force to friction force acting when the body is in motion |
| Answer» B. Ratio of limiting friction and normal reaction | |
| 33. |
_ If a number of forces act simultaneously on a particle, it is possible$? |
| A. | Not a replace them by a single force |
| B. | To replace them by a single force |
| C. | To replace them by a single force through C.G. |
| D. | To replace them by a couple |
| Answer» C. To replace them by a single force through C.G. | |
| 34. |
_ A force is completely defined when we specify$? |
| A. | magnitude |
| B. | direction |
| C. | point of application |
| D. | all of the above |
| Answer» E. | |
| 35. |
_ Kinetic friction is the$? |
| A. | Tangent of angle between normal reaction and the resultant of normal reaction and the limiting friction |
| B. | Ratio of limiting friction and normal reaction |
| C. | The friction force acting when the body is just about to move |
| D. | The friction force acting when the body is in motion |
| Answer» E. | |
| 36. |
_ In determining stresses in frames by methods of sections, the frame is divided into two parts by an imaginary section drawn in such a way as not to cut more than$? |
| A. | Two members with unknown forces of the frame |
| B. | Three members with unknown forces of the frame |
| C. | Four members with unknown forces of the frame |
| D. | Three members with known forces of the frame |
| Answer» C. Four members with unknown forces of the frame | |
| 37. |
_ Two coplanar couples having equal and opposite moments$? |
| A. | Balance each other |
| B. | Produce a couple and an unbalanced force |
| C. | Are equivalent |
| D. | Produce a moment of couple |
| Answer» E. | |
| 38. |
_ The C.G. of a plane lamina will not be at its geometrical centre in the case of a$? |
| A. | right angled triangle |
| B. | equilateral triangle |
| C. | square |
| D. | circle |
| Answer» B. equilateral triangle | |
| 39. |
_Dynamic friction as compared to static friction is$? |
| A. | same |
| B. | more |
| C. | less |
| D. | may be less of more depending on nature of surfaces and velocity |
| Answer» D. may be less of more depending on nature of surfaces and velocity | |
| 40. |
_A single force and a couple acting in the same plane upon a rigid body$? |
| A. | balance each other |
| B. | cannot balance each other |
| C. | produce moment of a couple |
| D. | are equivalent |
| Answer» C. produce moment of a couple | |
| 41. |
_A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to$? |
| A. | 25 |
| B. | 50 |
| C. | 100 |
| D. | 250 |
| Answer» C. 100 | |
| 42. |
_A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal$? |
| A. | density of metal can’t be determined |
| B. | metal is twice as dense as water |
| C. | metal will float in water |
| D. | metal is twice as dense as unknown fluid |
| Answer» B. metal is twice as dense as water | |
| 43. |
Which of the following is not the unit of pressure ?$? |
| A. | kg/cm |
| B. | atmosphere |
| C. | mm of wcl |
| D. | newton. |
| Answer» E. | |
| 44. |
The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of$? |
| A. | friction |
| B. | limiting friction |
| C. | repose |
| D. | kinematic friction |
| Answer» D. kinematic friction | |
| 45. |
In the lever of third order, load W, effort P and fulcrum F are oriented as follows$? |
| A. | W between P and F |
| B. | F between W and P |
| C. | P between W and F |
| D. | W, P and F all on one side |
| Answer» B. F between W and P | |
| 46. |
The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is$? |
| A. | same |
| B. | double |
| C. | half |
| D. | four times |
| Answer» C. half | |
| 47. |
Which of the following is not the unit of energy$? |
| A. | kg m |
| B. | kcal |
| C. | wattr |
| D. | watt hours |
| Answer» D. watt hours | |
| 48. |
If n = number of members andy = number of joints, then for a perfect frame, n =$? |
| A. | j-2 |
| B. | (b)2j-l |
| C. | 2/-3 |
| D. | (d)3/-2 |
| Answer» D. (d)3/-2 | |
| 49. |
Which of the following is not the unit of power ?$? |
| A. | kW (kilowatt) |
| B. | hp (horse power) |
| C. | kg m/sec |
| D. | kcal/kg sec. |
| Answer» E. | |
| 50. |
Tangent of angle of friction is equal to$? |
| A. | kinetic friction |
| B. | limiting friction |
| C. | angle of repose |
| D. | coefficient of friction |
| Answer» E. | |