civil engineering MCQs – Page 166

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 Review each marked answer and report any item that may be outdated or unclear.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
3301. The graphical method of determining the forces in the members of a truss is based on________________?
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A. method of section

B. none of the two methods

C. either method

D. method of joint
3302. An ordinate in a funicular polygon represents__________________?
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A. shear force

B. equilibrium

C. bending moment

D. resultant force

3303. The bending moment in an arch is proportional to___________________?
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A. none of these

B. intercept between the arch axis and the funicular polygon

C. vertical ordinate of funicular polygon

D. vertical ordinate of the arch

3304. 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____________________?
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A. 40 m/sec

B. 20 m/sec

C. 50 m/sec

D. 30 m/sec
3305. If the resultant of two forces has the same magnitude as either of the force, then the angle between the two forces is____________________?
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A. 30

B. 120

C. 60

D. 45

3306. If a body is lying on a plane whose inclination with the horizontal is less than the angle of friction, then___________________?
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A. a force is required to move the body upwards

B. correct answer is?

C. a force is required to move the body downward

D. the body will not be in equilibrium</strong>

3307. A ball is dropped from a height of 16 m on a horizontal floor. If it rebounds to a height of 9 m after striking the floor, the coefficient of restitution between ball and floor is_____________________?
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A. 3-Apr

B. 3/4

C. 4-Jan

D. 3-Feb

3308. 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 tan1 x, where x is______________________?
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A. 3-May

B. 4-Mar

C. 5-Apr

D. 3/5
3309. Instantaneous center is at infinity when the angular velocity is _________________?
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A. minimum

B. maximum

C. zero

D. constant

3310. The maximum pull in a cable, carrying a uniformly distributed load and supported at two ends which are at the same level, is at_____________________?
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A. supports

B. quarter span

C. mid span

D. none of the above

3311. 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_____________________?
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A. 75 and 50

B. 75 and 75

C. 50 and 50

D. 50 and 75
3312. If a flywheel increases its speed from 10 rpm to 20 rpm in 10 seconds, then its angular acceleration is_____________________?
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A. rad/sec 10

B. rad/sec 20

C. none of the above

D. rad/sec 30
3313. A cylinder will slip on an inclined plane of inclination 0 if the coefficient of static friction between plane and cylinder is_____________________?
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A. less than (2/3) tan 0

B. less than (1/3) tan 0

C. less than (2/3) sin 6

D. less than (1/3) sin 6

3314. 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)______________________?
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A. 50 m/sec

B. 40 m/sec

C. 25 m/sec

D. 15 m/sec

3315. The angle of projection at which the horizontal range and maximum height of a projectile are equal to___________________?
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A. tan1 (1/4)

B. tan- (4)

C. 45

D. tan-1 (2)

3316. 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_________________?
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A. 6 m/sec

B. 24 m/sec

C. 12 m/sec

D. 48 m/sec

3317. If the angular distance, 0 = 2t3 3t2, the angular acceleration at t = 1 sec. is__________________?
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A. 4 rad/sec2

B. 12 rad/sec2

C. 1 rad/sec2

D. 6 rad/sec2
3318. A uniform pyramid and a uniform prism of same height lie with their base on the surface. Which is more stable ?
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A. pyramid

B. prism

C. both equally stable

D. none of the above

3319. A funicular polygon cannot be made to pass through___________________?
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A. two specified points

B. one specified point

C. more than three specified points

D. three specified points

3320. A cable loaded with 10 kN/m of span is stretched between supports in the same horizontal line 100 m apart. If the central dip is 10 m, then the maximum and minimum pull in the cable respectively are____________________?
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A. 1346.3 kN and 1500 kN

B. 1436.2 kN and 1500 kN

C. 1436.2 kN and 1250 kN

D. 1346.3 kN and 1250 kN