Civil Engineering MCQs

Page No. 159

Impulse can be obtained from a_________________?


aforce-displacement diagram

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bforce-time diagram

✓


cvelocity-time diagram

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dvelocity-displacement diagram

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View Answer force-time diagram

Which of the following is a scalar quantity ?


aenergy

✓


bmomentum

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ctorque

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dimpulse

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View Answer energy

Coefficient of friction depends on__________________?


anature of surfaces only

✓


b area of contact only

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cboth (A) and (B)

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dnone of the above

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


aa force is required to move the body upwards

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ba force is required to move the body downward

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cthe body will not be in equilibrium

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dA and B

✓


View Answer A and B

A ladder of weight ‘w’ rests against a smooth vertical wall, and rests on rough horizontal ground, the coefficient of friction between the ladder and the ground being 1/4. The maximum angle of inclination of the ladder to the vertical, if a man of weight ‘w’ is to walk to the top of it safely, is tan’1 x, where x is___________________?


a1/4

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b 1/3

✓


c3

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d. 4

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View Answer 1/3

The shape of a suspended cable for a uniformly distributed load over it is__________________?


acircular

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bparabolic

✓


ccatenary

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dcubic parabola

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View Answer parabolic

A light rope is loaded with many equal weights at equal horizontal intervals. The points of suspension on the rope lie on a_____________________?


aparabola

✓


bcatenary

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ccycloid

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dellipse

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View Answer parabola

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___________________?


a1/3

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b2/3

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c1/9

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d 8/9

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View Answer 8/9

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_____________________?


a1/4

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b2/3

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c3/4

✓


d4/3

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View Answer 3/4

When a body slides down an inclined surface, the acceleration of the body is given by__________________?


ag

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bgsinG

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cg cos 6

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dg tan 6

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View Answer gsinG

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