A timber beam of 100 mm width and 200 mm depth is reinforced with two steel plates of 100 mm width and 5 mm thickness as shown in figures. Which one of the following statements is correct for the same value of bending stress in the timber ?

Moment of resistance in figure II will be more than that in figure I

Moment of resistance in figure I will be more than that in figure II

Moment of resistance in figure II will be more than that in figure I

Moment of resistance in figure I will be equal to that in figure II

No logical comparison can be made

For the continuous beam ( constant) loaded as shown in the figure given, the moment at '' is

same as the free moment at mid-span of

0.75 times free moment at mid-span of

same as the free moment at mid-span of

1.50 times free moment at mid-span of

2.00 time free moment at mid-span of

Which one of the following statements is correct ?In a plane truss, influence line values

vary following a cubic relationship between panel points

vary parabolically between panel points

vary exponentially between panel points

vary linearly between panel points

vary following a cubic relationship between panel points

The resultant of the coplanar, concurrent system of forces F, F, F and F shown in the above figure is

20 kN acting vertically downwards

20 kN acting horizontally from left to right

A vehicle is moving up an incline when the driver applies its brakes and the vehicle retards at 0.5 m/s. Then according to D'Alembert's principle

inertia force will be directed opposite to the direction of motion

inertia force will be directed in the direction of motion

inertia force will be directed opposite to the direction of motion

magnitude of the inertia force will depend on the angle of inclination

magnitude of the inertia force will depend on coefficient of friction between the wheels and the road surface

1888 + Mcqs in Upsc Civil Service Exam Questions in Civil Engineering Page 3 McqOptions

101.	If is the specific gravity of the material used in the design of a masonry dam of triangular section, then the ratio between the height and base width of the dam for structural safety and stability is equal to
A.	1/
B.	1/
Answer» C.

Discussion

102.	Consider the following statements relating to the stability of floating as well as submerged bodies :1. A submerged body is stable when the centre of gravity is below the centre of buoyancy.2. A floating body is stable when the centre of gravity is above the centre of buoyancy.3. A floating body is stable when the centre of gravity is below the metacentre.4. A submerged body is in stable equilibrium when the centre of gravity coincides with the centre of buoyancy.Of these statements :
A.	1, 2 and 3 are correct
B.	2, 3 and 4 are correct
C.	1, 2 and 4 are correct
D.	1, 3 and 4 are correct
Answer» E.

Discussion

103.	A ladder of weight and length is held in equilibrium by a horizontal force as shown in the figure given above. Assuming the ladder to be idealized as a homogeneous rigid bar and the surfaces to be smooth, which one of the following is correct ?
A.	= 2
B.	cos θ
Answer» B. cos θ

Discussion

104.	Wearing locations of rails and their reasons are listed below :1. Wear at end of rails : Loose fish bolts2. Wear at sides of rail head : Constant lerake application3. Wear on the top of rail head on tangent truck : Rigidity of wheel base4. Wear on top of rail head on curves : Lesser area of contact between wheel and rail Which of the pairs given above are correctly matched ?
A.	1 and 4
B.	1 and 2
C.	2 and 3
D.	1, 2, 3 and 4
Answer» E.

Discussion

105.	In a laminar boundary layer, the velocity distribution can be assumed to be given, in usual notations, asWhich one of the following is the correct expression for the displacement thickness δ* for this boundary layer ?
A.	δ* = δ
B.	δ* = δ/2
C.	δ* = δ/4
D.	δ* = δ/6
Answer» C. δ* = δ/4

Discussion

106.	A timber beam of 100 mm width and 200 mm depth is reinforced with two steel plates of 100 mm width and 5 mm thickness as shown in figures. Which one of the following statements is correct for the same value of bending stress in the timber ?
A.	Moment of resistance in figure I will be more than that in figure II
B.	Moment of resistance in figure II will be more than that in figure I
C.	Moment of resistance in figure I will be equal to that in figure II
D.	No logical comparison can be made
Answer» B. Moment of resistance in figure II will be more than that in figure I

Discussion

107.	If the gradient of a ground is -3%, that of another ground intersecting with the former is 5%, and the horizontal length of the vertical curve to be drawn is 600 m, then the vertical offset '' from the vertex of the vertical curve to the mid-point of the curve will be
A.	1.5 m
B.	6 m
C.	15 m
D.	75 m
Answer» C. 15 m

Discussion

108.	Why is super plasticizer added to concrete?1. To reduce the quantity of mixing water.2. To increase the consistency.3. To reduce the quantity of cement.4. To increase resistance to freezing and thawing.Select the correct answer using the code given below :
A.	1, 2 and 3
B.	1, 3 and 4
C.	2 and 3
D.	4 only
Answer» B. 1, 3 and 4

Discussion

109.	For the continuous beam ( constant) loaded as shown in the figure given, the moment at '' is
A.	0.75 times free moment at mid-span of
B.	same as the free moment at mid-span of
C.	1.50 times free moment at mid-span of
D.	2.00 time free moment at mid-span of
Answer» B. same as the free moment at mid-span of

Discussion

110.	Consider the following statements :1. A recovery ratio of less than 1 implies that the soil has compressed.2. A recovery ratio greater than 1 implies that the soil has swelled.3. A recovery ratio of less than 1 implies that the soil has swelled.4. A recovery ratio greater than 1 implies that the soil has compressed.Which of the following statements given above is/are correct ?
A.	1 and 2
B.	1 only
C.	3 and 4
D.	4 only
Answer» B. 1 only

Discussion

111.	The representative fraction means that the scale is 1 cm equal to
A.	0.25 m
B.	2.5 m
C.	25 m
D.	2.5 km
Answer» D. 2.5 km

Discussion

112.	A simply supported beam of span carries a concentrated load at its mid-span. If the width '' of the beam is constant throughout the span, then, when the permissible bending stress is '', the beam's mid-span depth will be
A.	3
B.	/2
C.	6
D.	/
Answer» C. 6

Discussion

113.	A pin-jointed truss is loaded as shown in the given figure. The force in member is
A.	10 tonnes tensile
B.	10 tonnes compressive
C.	5 tonnes tensile
D.	5 tonnes compressive
Answer» C. 5 tonnes tensile

Discussion

114.	Consider the following statements- with reference to a continuous beam supported at , and for which the shear force diagram is shown in the given figure.There is 1. a concentrated load acting at point 2. a concentrated load acting at point 3. a uniformly distributed load acting on the portion .Of these statements:
A.	1, 2 and 3 are correct
B.	1 and 2 are correct
C.	2 and 3 are correct
D.	1 and 3 are correct
Answer» E.

Discussion

115.	Which one of the following statements is correct ?In a plane truss, influence line values
A.	vary parabolically between panel points
B.	vary exponentially between panel points
C.	vary linearly between panel points
D.	vary following a cubic relationship between panel points
Answer» D. vary following a cubic relationship between panel points

Discussion

116.	Consider the following statements :A concrete mixer is specified by the :1. volume of the mixing drum.2. horse power of the prime mover.3. volume of mixed concrete discharged.4. mixer drum speed.5. feeding arrangement.Of these statements :
A.	1, 2 and 5 are correct
B.	1, 3 and 4 are correct
C.	3 and 5 are correct
D.	2 and 4 are correct
Answer» C. 3 and 5 are correct

Discussion

117.	Which of the following are the requirements for the design of a transition curve for a highway system ?1. Rate of change of grade2. Rate of change of radial acceleration3. Rate of change of super elevation4. Rate of change of curvatureSelect the correct answer using the code given below :
A.	1, 2 and 3
B.	2, 1 and 4
C.	1, 3 and 4
D.	2, 3 and 4
Answer» E.

Discussion

118.	Which among the following assumptions are made in the design roof trusses ?1. Roof truss is restrained by the reactions2. Axes of the members meeting at a joint intersect at a common point3. Riveted joints act as frictionless hinges4. Loads act normal to roof surfaceSelect the correct answer using the codes given below:
A.	1, 2 and 4
B.	2, 3 and 4
C.	1, 3 and 4
D.	1, 2 and 3
Answer» C. 1, 3 and 4

Discussion

119.	The saturated and dry densities of a soil are respectively 2000 kg/m and 1500 kg/m. The water content (in percentage) of the soil in the saturated state would be
A.	25
B.	33.33
C.	50
D.	66.66
Answer» C. 50

Discussion

120.	The beam shown in the given figure is horizontal. The distance to the point of contraflexure from the fixed end '' is
A.	0.333 m
B.	0.666 m
C.	0.25 m
D.	0.75 m
Answer» B. 0.666 m

Discussion

121.	The resultant of the coplanar, concurrent system of forces F, F, F and F shown in the above figure is
A.	20kN acting vertically upwards
B.	zero
C.	20 kN acting vertically downwards
D.	20 kN acting horizontally from left to right
Answer» C. 20 kN acting vertically downwards

Discussion

122.	Consider the following statements :The effect of sea water on hardened concrete is to1. increase its strength2. reduce its strength 3. retard setting 4. decrease its durability. Of these statements :
A.	1 and 3 are correct
B.	2 and 3 are correct
C.	2 and 4 are correct
D.	1 and 4 are correct
Answer» D. 1 and 4 are correct

Discussion

123.	A timber beam of rectangular section 100 mm x 50 mm is simply supported at the ends, has a 30 mm x 10 mm steel strip securely fixed to the top surface as shown in the given figure.The centroid of the "Equivalent timber beam" in this case from the tope surface
A.	is 5 mm
B.	is 30 mm
C.	is 15 mm
D.	cannot be predicted
Answer» C. is 15 mm

Discussion

124.	For the motion represented by the graph shown in the given figure, the numerical value of velocity , when acceleration will be
A.	1 m/sec
B.	2 m/sec
C.	3 m/sec
D.	4 m/sec
Answer» B. 2 m/sec

Discussion

125.	If the load, warping and frictional stresses in a cement concrete slab are 210 N/mm, 290 N/mm and 10 N/mm respectively, the critical combination of stresses during summer midday is
A.	290 N/mm
B.	390 N/mm
C.	490 N/mm
D.	590 N/mm
Answer» D. 590 N/mm

Discussion

126.	Consider the following statements :1. Infiltration galleries are placed along the river beds at a depth of 4 to 6 m.2. The draw-down for the infiltration galleries is more than that for radial wells.3. Clogging of pipe pores in inflitration galleries is less than that for radial wells.4. The cost of extracting unit volume of water is more in case of infiltration galleries as compared to radial wells.Which of the statements given above is/are correct ?
A.	1 and 2
B.	1, 2 and 3
C.	2, 3 and 4
D.	4 only
Answer» D. 4 only

Discussion

127.	From a circular plate of diameter , whose centre is , another circular plate of diameter is cut, removed and kept over (in the given figure). The thickness of the plate is uniform. The shift of the centroid due to this operation will be
A.	/4 to the left of
B.	/8 to the right of
C.	/4 to the right of
D.	3
E.	/8 to the right of
Answer» C. /4 to the right of

Discussion

128.	Consider the following statements with respect to tunnelling methods:1. Full face excavation is suitable for small size tunnel of short length in compact rock. It is not suitable in urban areas.2. Heading and Benching method is suitable for soft rock tunnelling of medium size.3. Drift method is suitable for large tunnels in difficult or incompetent rock.Which of the statements given above are correct ?
A.	1 and 3
B.	1, 2 and 3
C.	2 and 3
D.	1 and 2
Answer» B. 1, 2 and 3

Discussion

129.	Consider the following statements :1. Water hammer can develop in an unsteady flow only.2. Time required for rapid closure of valve is between 2 L/C and 4 L/C where L is the pipe length and C is the celerity of wave.3. In flexible water column theory, pipe may expand and water may compress in the flow system.4. Joukowskyhas carried out the mathematical analysis of water hammer.Which is the above statements relating to water hammer in pipes are correct ?
A.	1, 2 and 3
B.	1, 2 and 4
C.	2, 3 and 4
D.	1, 3 and 4
Answer» D. 1, 3 and 4

Discussion

130.	In the cantilever truss shown in the given figure, the reaction at is
A.	10 t
B.	20 t
C.	30 t
D.	40 t
Answer» D. 40 t

Discussion

131.	The effort '' to be applied horizontally to pull a weight '' on a plane inclined at an angle α with the horizontal is given by (tan θ is the coefficient of friction)
A.	=
B.	tan (α + θ)
C.	=
D.	tan (α - θ)
Answer» B. tan (α + θ)

Discussion

132.	A vehicle is moving up an incline when the driver applies its brakes and the vehicle retards at 0.5 m/s. Then according to D'Alembert's principle
A.	inertia force will be directed in the direction of motion
B.	inertia force will be directed opposite to the direction of motion
C.	magnitude of the inertia force will depend on the angle of inclination
D.	magnitude of the inertia force will depend on coefficient of friction between the wheels and the road surface
Answer» B. inertia force will be directed opposite to the direction of motion

Discussion

133.	Following data refer to precise measurement of an angle on the field : (i) 2 = 20°10' - weight 2 (ii) 4 = 40°10' - weight 3What is the most probable value of angle A ?
A.	10°01'06"
B.	10°02'07"
C.	10°02'51"
D.	10°22'51"
Answer» D. 10°22'51"

Discussion

134.	A torsion member is fabricated from two concentric thin tubes. At the ends, the tubes are welded to rigid discs so that both the tubes are twisted as a unit. The radius of the outer tube is 2 and that of the inner tube is . If the shear stresses developed in the outer tube is τ, then the shear stress in the inner tube will be.
A.	τ
B.	0.25 τ
C.	0.75 τ
D.	0.5 τ
Answer» E.

Discussion

135.	For a circular column having its ends hinged, the slenderness ratio is 160. The / ratio of the column is
A.	80
B.	57
C.	40
D.	20
Answer» D. 20

Discussion

136.	Which of the following treatment(s) will be indicated for a rural water supply from a deep groundwater source ?1. Sedimentation.2. Alum dosage.3. Potassium permanganate dosing.4. Bleaching powder application.Select the correct answer using the codes given below :
A.	1, 2 and 3
B.	1, 2 and 4
C.	3 and 4
D.	4 alone
Answer» E.

Discussion

137.	For the simply supported beam in the figure, is the centre of the span. is also the point through which the resultant of the column load passes. The column rests on the beam over a small length symmetrically on either side of . What is the shearing force at ?
A.	/2
B.	/4
C.	0
Answer» E.

Discussion

138.	The following statements relate to the pressure exerted by a fluid on a Submerged curved surface :1. The vertical component of hydrostatic force acting on a submerged curved surface acts through the centre of volume of the fluid directly above the submerged area.2. The horizontal component of the force acting on a curved surface is the hydrostatic force acting on the vertical projection of the curved surface.3. The resultant force on a curved surface acts on the bottom of th6 curved surface.Of these statements :
A.	1, 2 and 3 are correct
B.	2 and 3 are correct
C.	1 and 2 are correct
D.	1 and 3 are correct
Answer» D. 1 and 3 are correct

Discussion

139.	Consider the following locations of a turnout:1. Tongue rail2. Lead rail3. Toe of switch4. Crossing.Which is the correct sequence for a train to pass over the turnout from the facing direction?
A.	3 - 1 - 2 - 4
B.	4 - 2 - 1 - 3
C.	3 - 2 - 1 - 4
D.	4 - 1 - 2 - 3
Answer» B. 4 - 2 - 1 - 3

Discussion

140.	Consider the following statements regarding the swedish circle method of analysing stability of slopes :1. It is a general method of analysing stability of slopes.2. It satisfied only the overall moment equation of equilibirum.3. It considers the forces action on the sides of individual slices.4. It gives a factor of safety which are on the safeside.Of the statements :
A.	1, 2 and 3 are correct
B.	1, 2 and 4 are correct
C.	2, 3 and 4 are correct
D.	1, 3 and 4 are correct
Answer» E.

Discussion

141.	A given material has Young's modulus , modulus of rigidity and Poisson's ratio of Young's modulus to modulus of rigidity of this material is,
A.	3.75
B.	3
C.	2.5
D.	1.5
Answer» D. 1.5

Discussion

142.	Which of the following instruments have both horizon glass and index glass ?1. Optical square2. Line ranger3. Box sextant4. PedometerSelect the correct answer using the code given below :
A.	2, 3 and 4
B.	1, 3 and 4
C.	1 and 3 only
D.	2 and 4 only
Answer» D. 2 and 4 only

Discussion

143.	Which of the following equations are used for the derivation of the differential equation for water surface profile in open channel flow :1. Continuity equation2. Energy equation3. Momentum equationSelect the correct answer using the codes given below :
A.	1, 2 and 3
B.	1 and 3
C.	2 and 3
D.	1 and 2
Answer» B. 1 and 3

Discussion

144.	Consider the following statements regarding uniform flow in an open channel :1. Energy grade line, water surface and bed slope are parallel to each other.2. Froude number does not vary from section to section.3. Velocity of water is the same at all points of the cross-section.Of these statements :
A.	1, 2 and 3 are correct
B.	1 and 2 are correct
C.	1 and 3 are correct
D.	2 and 3 are correct
Answer» D. 2 and 3 are correct

Discussion

145.	The following data pertain to a sewage sample :Initial D.O = 10 mg/lFinal D.O. = 10 mg/1 Dilution to 1%The BOD of the given sewage sample is
A.	8 mg/1
B.	10 mg/1
C.	100 mg/1
D.	2 mg/1
Answer» E.

Discussion

146.	In a simply supported beam of span '', each end is restrained against torsion, compression flange being unrestrained. According to IS : 800, the effective length of the compression flange will be equal to
A.	0.65
B.	0.85
C.	0.75
D.	0.70
Answer» B. 0.85

Discussion

147.	Two closely-coiled springs and of the same material, same wire and same number of turns are subjected to an axial load of . The mean diameter of spring is half that of spring . The ratio of deflection of spring to that of spring will be
A.	8
B.	4
C.	1/4
D.	1/8
Answer» D. 1/8

Discussion

148.	Consider the following statements regarding a simply supported beam subjected to a uniformly distributed load over the entire span :1. The bending moment is maximum at the central position.2. The shear force is zero at the central position.3. The slope is maximum at the middle position.Of these statements :
A.	1, 2 and 3 are correct
B.	1 and 2 are correct
C.	2 and 3 are correct
D.	1 and 3 are correct
Answer» C. 2 and 3 are correct

Discussion

149.	Given that: = effective depth, = width and = overall depth.The maximum area of compression reinforcement in a beam is
A.	0.04
B.	0.04
C.	0.12
D.	0.12
Answer» C. 0.12

Discussion

150.	Consider the following discharge measurement devices :1. Cylindrical mouthpiece flowing full2. Sharp-edged orifice3. Convergent-divergent mouthpiece4. Borda's re-entrant mouthpiece flowing freeThe correct sequence of increasing order of their discharge coefficients is
A.	4-2-1-3
B.	4-2-3-1
C.	2-4-3-1
D.	2-4-1-3
Answer» B. 4-2-3-1

Discussion

Explore topic-wise MCQs in Civil Engineering.

If is the specific gravity of the material used in the design of a masonry dam of triangular section, then the ratio between the height and base width of the dam for structural safety and stability is equal to

A ladder of weight and length is held in equilibrium by a horizontal force as shown in the figure given above. Assuming the ladder to be idealized as a homogeneous rigid bar and the surfaces to be smooth, which one of the following is correct ?

In a laminar boundary layer, the velocity distribution can be assumed to be given, in usual notations, asWhich one of the following is the correct expression for the displacement thickness δ* for this boundary layer ?

A timber beam of 100 mm width and 200 mm depth is reinforced with two steel plates of 100 mm width and 5 mm thickness as shown in figures. Which one of the following statements is correct for the same value of bending stress in the timber ?

If the gradient of a ground is -3%, that of another ground intersecting with the former is 5%, and the horizontal length of the vertical curve to be drawn is 600 m, then the vertical offset '' from the vertex of the vertical curve to the mid-point of the curve will be

Why is super plasticizer added to concrete?1. To reduce the quantity of mixing water.2. To increase the consistency.3. To reduce the quantity of cement.4. To increase resistance to freezing and thawing.Select the correct answer using the code given below :

For the continuous beam ( constant) loaded as shown in the figure given, the moment at '' is

The representative fraction means that the scale is 1 cm equal to

A simply supported beam of span carries a concentrated load at its mid-span. If the width '' of the beam is constant throughout the span, then, when the permissible bending stress is '', the beam's mid-span depth will be

A pin-jointed truss is loaded as shown in the given figure. The force in member is

Which one of the following statements is correct ?In a plane truss, influence line values

Consider the following statements :A concrete mixer is specified by the :1. volume of the mixing drum.2. horse power of the prime mover.3. volume of mixed concrete discharged.4. mixer drum speed.5. feeding arrangement.Of these statements :

Which of the following are the requirements for the design of a transition curve for a highway system ?1. Rate of change of grade2. Rate of change of radial acceleration3. Rate of change of super elevation4. Rate of change of curvatureSelect the correct answer using the code given below :

The saturated and dry densities of a soil are respectively 2000 kg/m and 1500 kg/m. The water content (in percentage) of the soil in the saturated state would be

The beam shown in the given figure is horizontal. The distance to the point of contraflexure from the fixed end '' is

The resultant of the coplanar, concurrent system of forces F, F, F and F shown in the above figure is

Consider the following statements :The effect of sea water on hardened concrete is to1. increase its strength2. reduce its strength 3. retard setting 4. decrease its durability. Of these statements :

A timber beam of rectangular section 100 mm x 50 mm is simply supported at the ends, has a 30 mm x 10 mm steel strip securely fixed to the top surface as shown in the given figure.The centroid of the "Equivalent timber beam" in this case from the tope surface

For the motion represented by the graph shown in the given figure, the numerical value of velocity , when acceleration will be

If the load, warping and frictional stresses in a cement concrete slab are 210 N/mm, 290 N/mm and 10 N/mm respectively, the critical combination of stresses during summer midday is

From a circular plate of diameter , whose centre is , another circular plate of diameter is cut, removed and kept over (in the given figure). The thickness of the plate is uniform. The shift of the centroid due to this operation will be

In the cantilever truss shown in the given figure, the reaction at is

The effort '' to be applied horizontally to pull a weight '' on a plane inclined at an angle α with the horizontal is given by (tan θ is the coefficient of friction)

A vehicle is moving up an incline when the driver applies its brakes and the vehicle retards at 0.5 m/s. Then according to D'Alembert's principle

Following data refer to precise measurement of an angle on the field : (i) 2 = 20°10' - weight 2 (ii) 4 = 40°10' - weight 3What is the most probable value of angle A ?

For a circular column having its ends hinged, the slenderness ratio is 160. The / ratio of the column is

Which of the following treatment(s) will be indicated for a rural water supply from a deep groundwater source ?1. Sedimentation.2. Alum dosage.3. Potassium permanganate dosing.4. Bleaching powder application.Select the correct answer using the codes given below :

For the simply supported beam in the figure, is the centre of the span. is also the point through which the resultant of the column load passes. The column rests on the beam over a small length symmetrically on either side of . What is the shearing force at ?

Consider the following locations of a turnout:1. Tongue rail2. Lead rail3. Toe of switch4. Crossing.Which is the correct sequence for a train to pass over the turnout from the facing direction?

A given material has Young's modulus , modulus of rigidity and Poisson's ratio of Young's modulus to modulus of rigidity of this material is,

Which of the following instruments have both horizon glass and index glass ?1. Optical square2. Line ranger3. Box sextant4. PedometerSelect the correct answer using the code given below :

Which of the following equations are used for the derivation of the differential equation for water surface profile in open channel flow :1. Continuity equation2. Energy equation3. Momentum equationSelect the correct answer using the codes given below :

Consider the following statements regarding uniform flow in an open channel :1. Energy grade line, water surface and bed slope are parallel to each other.2. Froude number does not vary from section to section.3. Velocity of water is the same at all points of the cross-section.Of these statements :

The following data pertain to a sewage sample :Initial D.O = 10 mg/lFinal D.O. = 10 mg/1 Dilution to 1%The BOD of the given sewage sample is

In a simply supported beam of span '', each end is restrained against torsion, compression flange being unrestrained. According to IS : 800, the effective length of the compression flange will be equal to

Two closely-coiled springs and of the same material, same wire and same number of turns are subjected to an axial load of . The mean diameter of spring is half that of spring . The ratio of deflection of spring to that of spring will be

Given that: = effective depth, = width and = overall depth.The maximum area of compression reinforcement in a beam is

Consider the following discharge measurement devices :1. Cylindrical mouthpiece flowing full2. Sharp-edged orifice3. Convergent-divergent mouthpiece4. Borda's re-entrant mouthpiece flowing freeThe correct sequence of increasing order of their discharge coefficients is