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MCQOPTIONS
This section includes 244 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Which of the following is not the unit of power? |
| A. | kW (kilowatt) |
| B. | hp (horse power) |
| C. | kcal/sec |
| D. | kcal/kg sec |
| Answer» E. | |
| 102. |
The equivalent length of a column fixed at both ends, is |
| A. | 0.5 l |
| B. | 0.7 l |
| C. | l |
| D. | 1.5 l |
| Answer» B. 0.7 l | |
| 103. |
The algebraic sum of moments of the forces forming couple about any point in their plane is |
| A. | Equal to the moment of the couple |
| B. | Constant |
| C. | Both of above are correct |
| D. | Both of above are wrong |
| Answer» B. Constant | |
| 104. |
Simple bending equation is |
| A. | M/I = R/E = F/Y |
| B. | I/M = E/R = Y/F |
| C. | M/I = E/R = F/Y |
| D. | M/I = R/E = Y/F |
| Answer» D. M/I = R/E = Y/F | |
| 105. |
While testing a cast iron beam (2.5 cm × 2.5 cm) in section and a metre long simply supported at the ends failed when a 100 kg weight is applied at the centre. The maximum stress induced is: |
| A. | 960 kg/cm2 |
| B. | 980 kg/cm2 |
| C. | 1000 kg/cm2 |
| D. | 1200 kg/cm2 |
| Answer» B. 980 kg/cm2 | |
| 106. |
The law which states, "Within elastic limits strain produced is proportional to the stress producing it", is known as |
| A. | Bernoullis law |
| B. | Stress law |
| C. | Hookes law |
| D. | Poissons law |
| Answer» D. Poissons law | |
| 107. |
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. | Dependence of forces |
| D. | Resolution of forces |
| Answer» E. | |
| 108. |
The moment diagram for a cantilever whose free end is subjected to a bending moment, will be a |
| A. | Triangle |
| B. | Rectangle |
| C. | Parabola |
| D. | Cubic parabola |
| Answer» C. Parabola | |
| 109. |
In a beam, the neutral plane |
| A. | May be its centre |
| B. | Passes through the C.G. of the area of cross-section |
| C. | Does not change during deformation |
| D. | None of these |
| Answer» D. None of these | |
| 110. |
The shape of the bending moment diagram over the length of a beam, carrying a uniformly distributed load is always |
| A. | Linear |
| B. | Parabolic |
| C. | Cubical |
| D. | Circular |
| Answer» C. Cubical | |
| 111. |
Pick up wrong statement about friction force for dry surfaces. Friction force is |
| A. | Proportional to normal load between the surfaces |
| B. | Dependent on the materials of contact surface |
| C. | Proportional to velocity of sliding |
| D. | Independent of the area of contact surfaces |
| Answer» D. Independent of the area of contact surfaces | |
| 112. |
The stiffness factor for a prismatic beam of length L and moment of inertia I, is |
| A. | IE/L |
| B. | 2EI/L |
| C. | 3EI/L |
| D. | 4EI/L |
| Answer» B. 2EI/L | |
| 113. |
In a three hinged arch, the third hinge is generally kept at |
| A. | Crown of the arch |
| B. | Midpoint of the crown and left support hinge |
| C. | Midpoint of the crown and right support hinge |
| D. | None of these |
| Answer» B. Midpoint of the crown and left support hinge | |
| 114. |
For a channel section, the shear centre lies at a distance of |
| A. | dbt/2I |
| B. | d²bt/3I |
| C. | d²b²t/4I |
| D. | db²t/5I |
| Answer» D. db²t/5I | |
| 115. |
The C.G. of a right circular solid cone of height h lies at the following distance from the base |
| A. | h/2 |
| B. | J/3 |
| C. | h/6 |
| D. | h/4 |
| Answer» E. | |
| 116. |
The shape of the bending moment diagram over the length of a beam, carrying a uniformly increasing load, is always |
| A. | Linear |
| B. | Parabolic |
| C. | Cubical |
| D. | Circular |
| Answer» D. Circular | |
| 117. |
Coefficient 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 friction force acting when the body is just about to move |
| D. | The friction force acting when the body is in motion |
| Answer» C. The friction force acting when the body is just about to move | |
| 118. |
The range within which a load can be applied on a rectangular column, to avoid any tensile stress, is |
| A. | One-half of the base |
| B. | One-fifth of the base |
| C. | One-fourth of the base |
| D. | One-fifth of the base |
| Answer» C. One-fourth of the base | |
| 119. |
D' Alembert's principle is used for |
| A. | Reducing the problem of kinetics to equivalent statics problem |
| B. | Determining stresses in the truss |
| C. | Stability of floating bodies |
| D. | Designing safe structures |
| Answer» B. Determining stresses in the truss | |
| 120. |
The effect of arching a beam, is |
| A. | To reduce the bending moment throughout |
| B. | To increase the bending moment throughout |
| C. | Nothing on the bending throughout |
| D. | All the above |
| Answer» B. To increase the bending moment throughout | |
| 121. |
If n is the ratio of internal and external diameters of a hollow shaft, the ratio of the weight of the hollow shaft and that of solid shaft of same strength, will be |
| A. | (1 - n²)/(1 - n²)1/2 |
| B. | (1 - n²)/(1 - n 4 )2/3 |
| C. | (1 + n 3 )/(1 + n 4 )1/2 |
| D. | (1 + n 1 )/(1 + n 4 )2/3 |
| Answer» C. (1 + n 3 )/(1 + n 4 )1/2 | |
| 122. |
Strain energy of any member may be defined as work done on it |
| A. | To deform it |
| B. | To resist elongation |
| C. | To resist shortening |
| D. | All the above |
| Answer» E. | |
| 123. |
As compared to uniaxial tension or compression, the strain energy stored in bending is only |
| A. | 1/8 |
| B. | 1/4 |
| C. | 1/3 |
| D. | 1/2 |
| Answer» D. 1/2 | |
| 124. |
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 | |
| 125. |
The width b and depth d of a beam cut from a wooden cylindrical log of 100 cm diameter for maximum strength are: |
| A. | b = 57.73 cm d = 81.65 cm |
| B. | b = 81.65 cm d = 57.73 cm |
| C. | b = 50.00 cm d = 50.00 cm |
| D. | b = 40.00 cm d = 80.00 cm |
| Answer» B. b = 81.65 cm d = 57.73 cm | |
| 126. |
If a constant section beam is subjected to a uniform bending moment throughout, its length bends to |
| A. | A circular arc |
| B. | A parabolic arc |
| C. | A catenary |
| D. | None of these |
| Answer» B. A parabolic arc | |
| 127. |
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. | |
| 128. |
If a steel rod of 20 mm diameter and 5 metres long elongates by 2.275 mm when subjected to an axial pull of 3000 kg, the stress developed, is |
| A. | 9.5541 kg/cm2 |
| B. | 95.541 kg/cm2 |
| C. | 955.41 kg/cm2 |
| D. | 9554.1 kg/cm2 |
| Answer» D. 9554.1 kg/cm2 | |
| 129. |
A simply supported wooden beam 150 cm long and having a cross section 16 cm × 24 cm carries a concentrated load, at the centre. If the permissible stress ft = 75 kg/cm2 and fs= 10 kg/cm2 the safe load is |
| A. | 3025 kg |
| B. | 3050 kg |
| C. | 3075 kg |
| D. | 3100 kg |
| Answer» D. 3100 kg | |
| 130. |
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 | |
| 131. |
Failure of riveted joints is due to |
| A. | Tearing of the plates between the rivet hole and the edge of the plate |
| B. | Tearing of plates between rivets |
| C. | Shearing of rivets |
| D. | All the above |
| Answer» E. | |
| 132. |
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. | |
| 133. |
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 cant 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 | |
| 134. |
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 | |
| 135. |
A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span |
| A. | 2.5 cm |
| B. | 3.0 cm |
| C. | 4.0 cm |
| D. | 5.0 cm |
| Answer» D. 5.0 cm | |
| 136. |
Along the neutral axis of a simply supported beam |
| A. | Fibres do not undergo strain |
| B. | Fibres undergo minimum strain |
| C. | Fibres undergo maximum strain |
| D. | None of these |
| Answer» B. Fibres undergo minimum strain | |
| 137. |
The ratio of strengths of solid to hollow shafts, both having outside diameter D and hollow having inside diameter D/2, in torsion, is |
| A. | 1/4 |
| B. | 1/2 |
| C. | 1/16 |
| D. | 15/15 |
| Answer» E. | |
| 138. |
According to principle of moments |
| A. | If a system of coplanar forces is in equilibrium, then their algebraic sum is zero |
| B. | If a system of coplanar forces is in equilibrium, then the algebraic sum of their moments about any point in their plane is zero |
| C. | The algebraic sum of the moments of any two forces about any point is equal to moment of their resultant about the same point |
| D. | Positive and negative couples can be balanced |
| Answer» C. The algebraic sum of the moments of any two forces about any point is equal to moment of their resultant about the same point | |
| 139. |
The stress in the wall of a cylinder in a direction normal to its longitudinal axis, due to a force acting along the circumference, is known as |
| A. | Yield stress |
| B. | Longitudinal stress |
| C. | Hoop stress |
| D. | Circumferential stress |
| Answer» D. Circumferential stress | |
| 140. |
A simply supported beam (l + 2a) with equal overhangs (a) carries a uniformly distributed load over the whole length, the B.M. changes sign if |
| A. | l > 2a |
| B. | l < 2a |
| C. | l = 2a |
| D. | l = 4a |
| Answer» B. l < 2a | |
| 141. |
A force acting on a body may |
| A. | Introduce internal stresses |
| B. | Balance the other forces acting on it |
| C. | Retard its motion |
| D. | All of the above |
| Answer» E. | |
| 142. |
Strain energy of a member may be equated to |
| A. | Average resistance × displacement |
| B. | ½ stress × strain × area of its cross-section |
| C. | ½ stress × strain × volume of the member |
| D. | ½ (stress)2 × volume of the member + Youngs modulus E |
| Answer» E. | |
| 143. |
Struts are load carrying members of a frame structure which are subjected to |
| A. | Axial tension loads |
| B. | Axial compressive loads |
| C. | Torsional loads |
| D. | Transverse loads |
| Answer» C. Torsional loads | |
| 144. |
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 | |
| 145. |
A cantilever carries is uniformly distributed load W over its whole length and a force W acts at its free end upward. The net deflection of the free end will be |
| A. | Zero |
| B. | (5/24) (WL3 /EI) upward |
| C. | (5/24) (WL3 /EI) downward |
| D. | None of these |
| Answer» C. (5/24) (WL3 /EI) downward | |
| 146. |
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 | |
| 147. |
The maximum deflection of |
| A. | A simply supported beam carrying a uniformly increasing load from either end and having the apex at the mid span is WL3 /60EI |
| B. | A fixed ended beam carrying a distributed load over the span is WL3 /384EI |
| C. | A fixed ended beam carrying a concentrated load at the mid span is WL3 /192EI |
| D. | All the above |
| Answer» E. | |
| 148. |
The phenomenon of slow extension of materials having constant load, i.e. increasing with the time is called |
| A. | Creeping |
| B. | Yielding |
| C. | Breaking |
| D. | None of these |
| Answer» B. Yielding | |
| 149. |
On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be |
| 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. | |
| 150. |
The radius of gyration of a rectangular section is not proportional to |
| A. | Square root of the moment of inertia |
| B. | Square root of the inverse of the area |
| C. | Square root of the moment of inertia divided by area of the section |
| D. | None of these |
| Answer» E. | |