Civil Engineering MCQs

Page No. 214

A body of weight W on inclined plane of a being pulled up by a horizontal force P will be on the point of motion up the plane when P is equal to___________________?


aW


b W sin (a + $)


cWtan(a + <|))


d Wan(a-)


View Answer Wtan(a + <|))

Coefficient of friction is the__________________?


a angle between normal reaction and the resultant of normal reaction and the limiting friction


bratio of limiting friction and normal reaction


cthe friction force acting when the body is just about to move


d the friction force acting when the body is in motion



On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be__________________?


adownwards at its upper end


b upwards at its upper end


cperpendicular to the wall at its upper end


dzero at its upper end


View Answer zero at its upper end

Which one of the following statements is not correct_________________?


athe tangent of the angle of friction is equal to coefficient of friction


bthe angle of repose is equal to angle of friction


c the tangent of the angle of repose is equal to coefficient of friction


d the sine of the angle of repose is equal to coefficient to friction



Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction__________________?


a along the plane


bhorizontally


cvertically


d at an angle equal to the angle of friction to the inclined plane



Angle oT friction is the___________________?


aangle between normal reaction and the resultant of normal reaction and the limiting friction


b ratio of limiting friction and normal reaction


c the ratio of minimum friction force to the friction force acting when the body is just about to move


dthe ratio of minimum friction force to friction force acting when the body is in motion



If a suspended body is struck at the centre of percussion, then the pressure on die axis passing through the point of suspension will be___________________?


amaximum


bminimum


czero


dinfinity


View Answer zero

The centre of percussion of a solid cylinder of radius r resting on a horizontal plane will be______________?


ar/2


b 2r/3


cr/A


d3r/2


View Answer 3r/2

The center of percussion of the homogeneous rod of length L suspended at the top will be__________________?


aL/2


b L/3


c 3L/4


d2L/3


View Answer 2L/3

From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the center of circular plate___________________?


a 0.5 cm


b1.0 cm


c 1.5 cm


d 2.5 cm


View Answer 0.5 cm

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