civil engineering MCQs – Page 50

Practise multiple-choice questions from civil engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

civil engineering Mcqs
981. A simply supported beam carries varying load from zero at one end and w at the other end. If the length of the beam is a, the maximum bending moment will be_______________?
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A. wa

B. wa

C. wa/27

D. wa/27

982. A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if______________?
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A. the floor is smooth, the wall is rough

B. the floor is rough, the wall is smooth

C. the floor and wall both are smooth surfaces

D. the floor and wall both are rough sur-faces

E. will be in equilibrium under all condi-tions

983. The forces acting normally on the cross section of a bar shown in the given figure introduce_______________?
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A. Tensile stress

B. Shear stress

C. Compressive stress

D. None of these

984. When time of closure tc = L/v0 (where L is length of pipe and v0 is speed of pressure wavE., the portion of pipe length subjected to maximum head is__________________?
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A. L/2

B. L

C. L/3

D. L/4
985. In the truss, the force in the member AC is_______________?
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A. t compressive

B. 8.75 t tensile

C. 6.25 t compressive

D. t tensile

986. According to law of triangle of forces______________?
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A. three forces acting at a point can be represented by a triangle, each side being proportional to force

B. none of the above

C. three forces acting at a point will be in equilibrium

D. if three forces acting upon a patticle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium

E. if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two

987. The length of a pipe is 1 km and its diameter is 20 cm. If the diameter of an equivalent pipe is 40 cm, then its length is_____________________?
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A. 4 km

B. 32 km

C. 8 km

D. 20 km

988. A bar L metre long and having its area of cross-section A, is subjected to a gradually applied tensile load W. The strain energy stored in the bar is_________________?
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A. WL/2AE

B. WL/2AE

C. WL/AE

D. WL/AE

989. The effort required to lift a load W on a screw jack with helix angle a and angle of friction <j) is equal to_________________?
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A. Wtan(a-)

B. Wsin(a + )

C. W (sin a + cos )

D. Wcos(a + )

E. Wtan(a + )
990. The discharge through a V- notch varies as______________?
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A. H5/2

B. H54 where H is head

C. H1/2

D. H32

991. If a concrete column 200 200 mm in cross-section is reinforced with four steel bars of 1200 mm2 total cross-sectional area. Calculate the safe load for the column if permissible stress in concrete is 5 N/mm2 and Es is 15 Ec________________?
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A. 274 MN

B. 264 MN

C. 284 MN

D. 294 MN

992. Which of the following is not the unit of pressure ?
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A. ata

B. newton

C. atmosphere

D. kg/cm

E. mm of wcl

993. For the close coil helical spring of the maximum deflection is__________________?
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A. 2WD3n/d4N

B. 8WD3n/d4N

C. WD3n/d4N

D. 4WD3n/d4N

994. A rolled steel joist is simply supported at its ends and carries a uniformly distributed load which causes a maximum deflection of 10 mm and slope at the ends of 0.002 radian. The length of the joist will be________________?
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A. 16 m

B. 14 m

C. 10 m

D. 12 m

995. A particle inside a hollow sphere of radius r, having coefficient of friction -rr can rest upto height of__________________?
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A. r/%

B. 0.134 r

C. r/2

D. 3r/8

E. r/A

996. The vertical reaction for the arch is________________?
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A. wl/a

B. wa/2l

C. wa/2l

D. wa/l

997. In the truss shown in given figure, the force in member BD is______________?
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A. 100 t compressive

B. Indeterminate

C. 100 t tensile

D. Zero

998. Pick up the correct statement from the following_______________?
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A. All the above

B. The structural member subjected to compression and whose dimensions are small as

C. compared to its length, is called a stmt

D. Deflection in lateral direction of a long column, is generally known as buckling

E. vertical compression members are generally known as columns or stanchions

999. Pick up the correct statement from the following?
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A. All the above

B. For a uniformly distributed load, B.M. curve is a parabola

C. For a load varying linearly, the shear force curve is a parabola

D. For a uniformly distributed load, the shear force varies linearly

1000. length of a column of length L, having one end fixed and other end hinged, is The equivalent_____________?
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A. 2 L

B. L

C. L/2

D. L