MCQOPTIONS
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MCQOPTIONS
This section includes 117 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Intrinisic equation of catenary is given by____________________? |
| A. | S = C tan q> |
| B. | S = C cos cp |
| C. | S = C sin cp |
| D. | S = C cot |
| Answer» B. S = C cos cp | |
| 52. |
Instantaneous center is at infinity when the angular velocity is _________________? |
| A. | constant |
| B. | zero |
| C. | maximum |
| D. | minimum |
| Answer» C. maximum | |
| 53. |
In which of the following trusses, the method of substitution is required for determining the forces in all the members of the truss by graphic statics ? |
| A. | howe truss |
| B. | king post truss |
| C. | fink truss |
| D. | warren truss |
| Answer» D. warren truss | |
| 54. |
In SI units, the units of force and energy are respectively___________________? |
| A. | Newton and watt |
| B. | Dyne and erg |
| C. | Newton and joule |
| D. | kg-wt and joule |
| Answer» D. kg-wt and joule | |
| 55. |
In a simple harmonic motion, the position of equilibrium is always_________________? |
| A. | stable |
| B. | unstable |
| C. | neutral |
| D. | none of the above |
| Answer» B. unstable | |
| 56. |
In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is_____________________? |
| A. | 30 |
| B. | 50 |
| C. | 60 |
| D. | 80 |
| Answer» C. 60 | |
| 57. |
In a lifting machine a weight of 5 kN is lifted through 200 mm by an effort of 0.1 kN moving through 15 m. The mechanical advantage and velocity ratio of the machine are respectively_____________________? |
| A. | 50 and 75 |
| B. | 75 and 50 |
| C. | 75 and 75 |
| D. | 50 and 50 |
| Answer» B. 75 and 50 | |
| 58. |
Impulse can be obtained from a_________________? |
| A. | force-displacement diagram |
| B. | force-time diagram |
| C. | velocity-time diagram |
| D. | velocity-displacement diagram |
| Answer» C. velocity-time diagram | |
| 59. |
If y is force and x is velocity, then dimensions of —=r are dx2__________________? |
| A. | M’^T’ |
| B. | M’L-‘T0 |
| C. | M’L-‘T1 |
| D. | M2L’T3 |
| Answer» C. M’L-‘T1 | |
| 60. |
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. | |
| 61. |
If the kinetic energy and potential energy of a simple harmonic oscillator of amplitude A are both equal to half the total energy, then the displacement is equal to_________________? |
| A. | A |
| B. | A/2 |
| C. | A/V2 |
| D. | AV2 |
| Answer» D. AV2 | |
| 62. |
If the given forces P,, P2, P3 and P4 are such that the force polygon does not close, then the system will___________________? |
| A. | be in equilibrium |
| B. | always reduce to a resultant force |
| C. | always reduce to a couple |
| D. | both (A) and (C) |
| Answer» C. always reduce to a couple | |
| 63. |
If the direction of projection bisects the angle between the vertical and the inclined plane, then the range of projectile on the inclined plane is__________________? |
| A. | zero |
| B. | maximum |
| C. | minimum |
| D. | unpredictable |
| Answer» C. minimum | |
| 64. |
If the angular distance, 0 = 2t3 – 3t2, the angular acceleration at t = 1 sec. is__________________? |
| A. | 1 rad/sec2 |
| B. | 4 rad/sec2 |
| C. | 6 rad/sec2 |
| D. | 12 rad/sec2 |
| Answer» D. 12 rad/sec2 | |
| 65. |
If a projectile is fired with an initial velocity of 10 m/sec at an angle of 60° to the horizontal, its horizontal and vertical velocity at the highest point of trajectory are___________________? |
| A. | 0 and 5 m/sec |
| B. | 5 m/sec and 0 |
| C. | 5 V3 m/sec and 0 |
| D. | 5 and 5V3 m/sec |
| Answer» C. 5 V3 m/sec and 0 | |
| 66. |
If A is the amplitude of particle executing simple harmonic motion, then the total energy E of the particle is___________________? |
| A. | proportional to A |
| B. | proportional to A2 |
| C. | proportional to 1/A2 |
| D. | independent of A |
| Answer» C. proportional to 1/A2 | |
| 67. |
If a flywheel increases its speed from 10 rpm to 20 rpm in 10 seconds, then its angular acceleration is_____________________? |
| A. | —rad/sec 10 |
| B. | —rad/sec 20 |
| C. | —rad/sec 30 |
| D. | none of the above |
| Answer» D. none of the above | |
| 68. |
If a body is lying on a plane whose inclination with the horizontal is less than the angle of friction, then___________________?_x005F_x000D_1) a force is required to move the body upwards_x005F_x000D_2) a force is required to move the body downward_x005F_x000D_3) the body will not be in equilibrium_x005F_x000D_The correct answer is? |
| A. | only (1) |
| B. | only (2) |
| C. | both (1) and (2) |
| D. | both (1) and (3) |
| Answer» D. both (1) and (3) | |
| 69. |
Free body diagram is an____________________? |
| A. | isolated joint with only body forces acting on it |
| B. | isolated joint with internal forces acting on it |
| C. | isolated joint with all the forces, internal as well as external, acting on it |
| D. | none of the above |
| Answer» D. none of the above | |
| 70. |
Force polygon method is applicable for_____________________? |
| A. | any copianar force system |
| B. | a system of parallel forces only |
| C. | concurrent copianar force system |
| D. | non-concurrent copianar force system |
| Answer» D. non-concurrent copianar force system | |
| 71. |
For a non-concurrent force system to be in equilibrium__________________? |
| A. | only the closure of force polygon is sufficient |
| B. | only the closure of funicular polygon is sufficient |
| C. | both force polygon and funicular polygon must close |
| D. | none of the above |
| Answer» D. none of the above | |
| 72. |
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° | |
| 73. |
Coefficient of friction depends on__________________? |
| A. | nature of surfaces only |
| B. | area of contact only |
| C. | both (A) and (B) |
| D. | none of the above |
| Answer» B. area of contact only | |
| 74. |
Cartesian form of the equation of catenary is_________________? |
| A. | y = c cosh x/c |
| B. | y = c sinh x/c |
| C. | y = c tan x/c |
| D. | y = c sin”1 x/c |
| Answer» B. y = c sinh x/c | |
| 75. |
At the instantaneous center, the velocity of the moving lamina at any instant is_________________? |
| A. | zero |
| B. | maximum |
| C. | minimum |
| D. | varying |
| Answer» B. maximum | |
| 76. |
An ordinate in a funicular polygon represents__________________? |
| A. | shear force |
| B. | resultant force |
| C. | bending moment |
| D. | equilibrium |
| Answer» D. equilibrium | |
| 77. |
A system of copianar forces is in equilibrium when___________________? |
| A. | force polygon closes |
| B. | funicular polygon closes |
| C. | both force polygon” and funicular polygon close |
| D. | all the forces are concurrent |
| Answer» D. all the forces are concurrent | |
| 78. |
A system of copianar forces acting on a rigid body can be reduced to________________? |
| A. | one force only |
| B. | one couple only |
| C. | one force and one couple only |
| D. | none of the above |
| Answer» D. none of the above | |
| 79. |
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 | |
| 80. |
A stone was thrown vertically upwards from the ground with a velocity of 50 m/sec. After 5 seconds another stone was thrown vertically upwards from the same place. If both the stones strike the ground at the same time, then the velocity with which the second stone was thrown should be (Assume g = 10 m/sec2)______________________? |
| A. | 15 m/sec |
| B. | 25 m/sec |
| C. | 40 m/sec |
| D. | 50 m/sec |
| Answer» C. 40 m/sec | |
| 81. |
A stone is thrown vertically upwards with a vertical velocity of 49 m/sec. It returns to the ground in________________? |
| A. | 5 sec |
| B. | 8 sec |
| C. | 10 sec |
| D. | 20 sec |
| Answer» D. 20 sec | |
| 82. |
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 | |
| 83. |
A solid sphere of mass M and radius R rolls down a plane inclined at 0 with the horizontal. The acceleration of sphere is_______________? |
| A. | (1/3) g sin0 |
| B. | (2/5) g sin 0 |
| C. | (3/7) g sin 0 |
| D. | (5/7) g sin0 |
| Answer» E. | |
| 84. |
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________________? |
| 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 | |
| 85. |
A simple pendulum of length / has an energy E, when its amplitude is A. If the length of pendulum is doubled, the energy will be___________________? |
| A. | E |
| B. | E/2 |
| C. | 2E |
| D. | 4E |
| Answer» C. 2E | |
| 86. |
A simple pendulum of length 1 has an energy E when its amplitude is A. If its amplitude is increased to 2 A, the energy becomes____________________? |
| A. | E |
| B. | E/2 |
| C. | 2E |
| D. | 4E |
| Answer» E. | |
| 87. |
A shell of mass 100 kg travelling with a velocity of 10 m/sec breaks into two equal pieces during an explosion which provides an extra kinetic energy of 20000 Joules. If the pieces continue to move in the same direction as before, then the speed of the faster one must be____________________? |
| A. | 20 m/sec |
| B. | 30 m/sec |
| C. | 40 m/sec |
| D. | 50 m/sec |
| Answer» C. 40 m/sec | |
| 88. |
A shell travelling with a horizontal velocity of 100 m/sec explodes and splits into two parts, one of mass 10 kg and the other of 15 kg. The 15 kg mass drops vertically downward with initial velocity of 100 m/sec and the 10 kg mass begins to travel at an angle to the horizontal of tan”1 x, where x is______________________? |
| A. | 3/4 |
| B. | 4/5 |
| C. | 5/3 |
| D. | 3/5 |
| Answer» E. | |
| 89. |
A rope is wrapped twice around a rough pole with a coefficient of friction ‘A . It is subjected to a force Fj at one end and a gradually increasing force F2 is applied at the other end till the rope just starts slip-ping. At this instant the ratio of F2 to Fi is_____________________? |
| A. | 1 |
| B. | e2* |
| C. | e4* |
| D. | e*72 |
| Answer» C. e4* | |
| 90. |
A rod AB carries three loads of 30 N, 70 N and 100 N at distances of 20 mm, 90 mm and 150 mm respectively from A. Neglecting the weight of the rod, the point at which the rod will balance is_______________? |
| A. | 109.5 mm from A |
| B. | 119.5 mm from A |
| C. | 125.5 mm from A |
| D. | 132.5 mm from A |
| Answer» B. 119.5 mm from A | |
| 91. |
A rigid body is in a stable equilibrium if the application of any force__________________? |
| A. | can raise the CG of the body but can not 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 | |
| 92. |
A quantity whose dimensions are M2L2 T3 could be the product of_________________? |
| A. | force and pressure |
| B. | mass and power |
| C. | energy and velocity |
| D. | force and velocity |
| Answer» C. energy and velocity | |
| 93. |
A quantity measured in the C.G.S system of units has dimensions M”2L3 T3/2. What numerical factor would be required to convert the quantity to SI units ? |
| A. | 1 |
| B. | 100 |
| C. | 1/100 |
| D. | 1/10000 |
| Answer» B. 100 | |
| 94. |
A projectile has maximum range of 40 m on a horizontal plane. If angle of projection is a and the time of flight is 1 second, then sin a must be about__________________? |
| A. | 1/4 |
| B. | 1/3 |
| C. | 1/2 |
| D. | 1/5 |
| Answer» B. 1/3 | |
| 95. |
A particle of mass 2 kg executes simple harmonic motion of frequency 6/71 Hz and amplitude 0.25 m. Its maximum kinetic energy is___________________? |
| A. | 4.5 J |
| B. | 9.0 J |
| C. | 12.0 J |
| D. | 18.0 J |
| Answer» C. 12.0 J | |
| 96. |
A particle moves in a straight line and its position is defined by the equation x = 6 t2 – t3 where t is expressed in seconds and x in meters. The maximum velocity during the motion is_________________? |
| A. | 6 m/sec |
| B. | 12 m/sec |
| C. | 24 m/sec |
| D. | 48 m/sec |
| Answer» C. 24 m/sec | |
| 97. |
A particle is executing simple harmonic motion in a line 1.0 m long. If the time of one complete vibration is 1 sec, then the maximum velocity of the particle is___________________? |
| A. | 1.00 m/sec |
| B. | 1.57 m/sec |
| C. | 3.14 m/sec |
| D. | 6.28 m/sec |
| Answer» D. 6.28 m/sec | |
| 98. |
A particle is dropped from a height of 3 m on a horizontal floor, which has a coefficient of restitution with the ball of 1/2. The height to which the ball will rebound after striking the floor is____________________? |
| A. | 0.5 m |
| B. | 0.75 m |
| C. | 1.0 m |
| D. | 1.5 m |
| Answer» C. 1.0 m | |
| 99. |
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 | |
| 100. |
A ladder of weight ‘w’ rests against a smooth vertical wall, and rests on rough horizontal ground, the coefficient of friction between the ladder and the ground being 1/4. The maximum angle of inclination of the ladder to the vertical, if a man of weight ‘w’ is to walk to the top of it safely, is tan’1 x, where x is___________________? |
| A. | 1/4 |
| B. | 1/3 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |