Civil Engineering MCQs

Page No. 162

The graphical method of determining the forces in the members of a truss is based on________________?


a method of joint


bmethod of section


ceither method


d none of the two methods


View Answer method of joint

The force polygon representing a set of forces in equilibrium is a_____________________?


atriangle


bopen polygon


cclosed polygon


dparallelogram


View Answer closed polygon

A system of copianar forces is in equilibrium when___________________?


aforce polygon closes


bfunicular polygon closes


cboth force polygon” and funicular polygon close


dall the forces are concurrent



Free body diagram is an____________________?


aisolated joint with only body forces acting on it


b isolated joint with internal forces acting on it


c isolated joint with all the forces, internal as well as external, acting on it


dnone of the above



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_____________________?


a50 and 75


b75 and 50


c 75 and 75


d50 and 50


View Answer 50 and 75

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)______________________?


a15 m/sec


b 25 m/sec


c40 m/sec


d50 m/sec


View Answer 25 m/sec

A particle is dropped from a height of 3 m on a horizontal floor, which has a coefficient of restitution with the ball of 1/2. The height to which the ball will rebound after striking the floor is____________________?


a0.5 m


b 0.75 m


c1.0 m


d1.5 m


View Answer 0.75 m

One Joule is equivalent to________________?


a9.81 Newton – metre


b1 Newton – metre


c1 kg wt – metre


d 1 dyne – metre


View Answer 1 Newton – metre

If a flywheel increases its speed from 10 rpm to 20 rpm in 10 seconds, then its angular acceleration is_____________________?


a—rad/sec 10


b—rad/sec 20


c—rad/sec 30


dnone of the above


View Answer —rad/sec 30

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 tan”1 x, where x is (Assume g = 10 m/sec2)_____________________?


a3/8


b1/2


c9/5


d5/8


View Answer 5/8

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