civil engineering Mcqs
3301. A car goes round a curve of radius 100 m at 25 m/sec. The angle to the horizontal at which the road must be banked to prevent sideways friction on the car wheels is tan1 x, where x is (Assume g = 10 m/sec2)_____________________?
comments icon0

A. 2-Jan

B. 8-Mar

C. 5/8

D. 5-Sep

3302. The graphical method of determining the forces in the members of a truss is based on________________?
comments icon0

A. method of section

B. none of the two methods

C. either method

D. method of joint
3303. An ordinate in a funicular polygon represents__________________?
comments icon0

A. shear force

B. equilibrium

C. bending moment

D. resultant force

3304. The bending moment in an arch is proportional to___________________?
comments icon0

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

3305. 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____________________?
comments icon0

A. 40 m/sec

B. 20 m/sec

C. 50 m/sec

D. 30 m/sec
3306. If the resultant of two forces has the same magnitude as either of the force, then the angle between the two forces is____________________?
comments icon0

A. 30

B. 120

C. 60

D. 45

3307. If a body is lying on a plane whose inclination with the horizontal is less than the angle of friction, then___________________?
comments icon0
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>

3308. 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_____________________?
comments icon0

A. 3-Apr

B. 3/4

C. 4-Jan

D. 3-Feb

3309. 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______________________?
comments icon0

A. 3-May

B. 4-Mar

C. 5-Apr

D. 3/5
3310. Instantaneous center is at infinity when the angular velocity is _________________?
comments icon0

A. minimum

B. maximum

C. zero

D. constant

3311. The maximum pull in a cable, carrying a uniformly distributed load and supported at two ends which are at the same level, is at_____________________?
comments icon0
A. supports

B. quarter span

C. mid span

D. none of the above

3312. 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_____________________?
comments icon0

A. 75 and 50

B. 75 and 75

C. 50 and 50

D. 50 and 75
3313. If a flywheel increases its speed from 10 rpm to 20 rpm in 10 seconds, then its angular acceleration is_____________________?
comments icon0

A. rad/sec 10

B. rad/sec 20

C. none of the above

D. rad/sec 30
3314. A cylinder will slip on an inclined plane of inclination 0 if the coefficient of static friction between plane and cylinder is_____________________?
comments icon0

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

3315. 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)______________________?
comments icon0

A. 50 m/sec

B. 40 m/sec

C. 25 m/sec

D. 15 m/sec

3316. The angle of projection at which the horizontal range and maximum height of a projectile are equal to___________________?
comments icon0

A. tan1 (1/4)

B. tan- (4)

C. 45

D. tan-1 (2)

3317. 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_________________?
comments icon0

A. 6 m/sec

B. 24 m/sec

C. 12 m/sec

D. 48 m/sec

3318. If the angular distance, 0 = 2t3 3t2, the angular acceleration at t = 1 sec. is__________________?
comments icon0

A. 4 rad/sec2

B. 12 rad/sec2

C. 1 rad/sec2

D. 6 rad/sec2
3319. A uniform pyramid and a uniform prism of same height lie with their base on the surface. Which is more stable ?
comments icon0
A. pyramid

B. prism

C. both equally stable

D. none of the above

3320. A funicular polygon cannot be made to pass through___________________?
comments icon0

A. two specified points

B. one specified point

C. more than three specified points

D. three specified points

3321. 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____________________?
comments icon0

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
3322. The angle of projection at which the horizontal range and maximum height of a projectile are equal to_____________________?
comments icon0

A. 56

B. 36

C. 76

D. 45

3323. The time period of a simple pendulum depends on__________________?
comments icon0

A. length of the pendulum

B. correct answer is

C. mass of suspended particle

D. acceleration due to gravity </strong>

3324. A rigid body is in a stable equilibrium if the application of any force__________________?
comments icon0

A. none of above

B. tends to lower the CG of the body

C. neither raises nor lowers the CG of the body

D. can raise the CG of the body but can not lower it
3325. A ball moving on a smooth horizontal table hits a rough vertical wall, the coefficient of restitution between ball and wall being 1/3. The ball rebounds at the same angle. The fraction of its kinetic energy lost is___________________?
comments icon0

A. 3-Jan

B. 9-Jan

C. 8/9

D. 3-Feb

3326. A force P of 50 N and another force Q of unknown magnitude act at 90 to each other. They are balanced by a force of 130 N. The magnitude of Q is__________________?
comments icon0
A. 120 N

B. 80 N

C. 60 N

D. 100 N

3327. The diagram showing the point of application and line of action of forces in their plane is called____________________?
comments icon0

A. funicular diagram

B. space diagram

C. vector diagram

D. force diagram

3328. In a simple harmonic motion, the position of equilibrium is always_________________?
comments icon0

A. neutral

B. none of the above

C. unstable

D. stable
3329. A disc of mass 4 kg, radius 0.5m and moment of inertia 3 kg-m2 rolls on a horizontal surface so that its center moves with speed 5 m/see. Kinetic energy of the disc is ___________________?
comments icon0
A. 200 J

B. 50 J

C. 400 J

D. 150 J

3330. A body is dropped from a height of 100 m and at the same time another body is projected vertically upward with a velocity of 10 m/sec. The two particles will____________________?
comments icon0

A. meet after 1 sec

B. meet after 5 sec

C. never meet

D. meet after 10 sec
3331. Joule is the unit of__________________?
comments icon0

A. power

B. momentum

C. work

D. impulse

3332. 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___________________?
comments icon0

A. 1.00 m/sec

B. 6.28 m/sec

C. 3.14 m/sec

D. 1.57 m/sec

3333. The force polygon representing a set of forces in equilibrium is a_____________________?
comments icon0

A. triangle

B. parallelogram

C. closed polygon

D. open polygon

3334. Impulse can be obtained from a_________________?
comments icon0

A. velocity-time diagram

B. force-time diagram

C. force-displacement diagram

D. velocity-displacement diagram

3335. One Joule is equivalent to________________?
comments icon0
A. 1 Newton metre

B. 1 kg wt metre

C. 9.81 Newton metre

D. 1 dyne metre

3336. The ratio of unit of force in gravitational system to that in absolute system is__________________?
comments icon0

A. 1

B. 1/g

C. g

D. none of the above

E. re g is acceleration due to gravity

3337. A cube on a smooth horizontal surface___________________?
comments icon0

A. cannot be in unstable equilibrium

B. can be in any of these states

C. cannot be in stable equilibrium

D. cannot be in neutral equilibrium

3338. When a circular wheel rolls on a straight track, then the shape of body centrode and space centrode respectively are________________?
comments icon0
A. circle and straight line

B. circle and parabola

C. straight line and parabola

D. straight line and circle

3339. One Newton is equivalent to_________________?
comments icon0

A. 981 dyne

B. 106 dyne

C. 107 dyne

D. 105 dyne
3340. 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___________________?
comments icon0

A. 5 and 5V3 m/sec

B. 5 V3 m/sec and 0

C. 0 and 5 m/sec

D. 5 m/sec and 0
3341. The maximum value of the horizontal range for a projectile projected with a velocity of 98 m/sec is__________________?
comments icon0

A. 1960 m

B. 490 m

C. 980 m

D. 98 m

3342. A stone is thrown up a slope of inclination 60 to the horizontal. At what angle to the slope must the stone be thrown so as to land as far as possible from the point of projection ?
comments icon0

A. 45

B. 15

C. 30

D. 75

3343. A circular disc rotates at n rpm. The angular velocity of a circular ring of same mass and radius as the disc and to have the same angular momentum is___________________?
comments icon0

A. 2n rpm

B. n/2 rpm

C. n rpm

D. n/4 rpm

3344. At the instantaneous center, the velocity of the moving lamina at any instant is_________________?
comments icon0

A. varying

B. minimum

C. maximum

D. zero
3345. Which of the following represents the state of neutral equilibrium ?
comments icon0
A. none of the above

B. a cube resting on one edge

C. a smooth cylinder lying on a curved surface

D. a smooth cylinder lying on a convex surface

3346. The total kinetic energy of a hoop of mass 2 kg and radius 4 m sliding with linear velocity 8 m/sec and angular velocity 5 radian/sec is_________________?
comments icon0
A. 464 J

B. 64 J

C. 400 J

D. 89 J

3347. For a given velocity of a projectile, the range is maximum when the angle of projection is___________________?
comments icon0

A. 90

B. 0

C. 30

D. 45
3348. A solid sphere of mass M and radius R rolls down a plane inclined at 0 with the horizontal. The acceleration of sphere is_______________?
comments icon0

A. (1/3) g sin0

B. (3/7) g sin 0

C. (5/7) g sin0

D. (2/5) g sin 0

3349. A quantity measured in the C.G.S system of units has dimensions M2L3 T3/2. What numerical factor would be required to convert the quantity to SI units ?
comments icon0

A. 100

B. 1/100

C. 1

D. 1/10000

3350. The potential energy of a particle falling through a straight shaft drilled through the earth (assumed homogenous and spherical) is proportional to____________________?
comments icon0

A. 1/r

B. r

C. log r

D. r2