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Civil Engineering :: Applied Mechanics and Graphic Statics

  1. A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The efficiency of the lifting machine is

  2. A.

     50 %

    B.

     40 %

    C.

     55 %

    D.

     30 %

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  3. A projectile is fired with a velocity of 100.3 m/sec. at an elevation of 60°. The velocity attained by the projectile when it is moving at a height of 100 m, is

  4. A.

     70 m/sec

    B.

     75 m/sec

    C.

     80 m/sec

    D.

     90 m/sec

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  5. A weight ‘W’ is suspended at the free end of a light member hinged to a vertical wall. If the angle of inclination of the member with the upper wall is θ°, the force introduced in the member, is

  6. A.

     W sec θ

    B.

     W cos θ

    C.

     W sin θ

    D.

     W cosec θ

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  7. A stone of mass 1 kg is tied to a string of length 1 m and whirled in a horizontal circle at a constant angular speed 5 rad/sec. The tension in the string is,

  8. A.

     5 N

    B.

     10 N

    C.

     15 N

    D.

     25 N

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  9. Two loads of 50 kg and 75 kg are hung at the ends of a rope passing over a smooth pulley shown in below figure. The tension in the string is:

  10. A.

     50 kg

    B.

     75 kg

    C.

     25 kg

    D.

     60 kg

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  11. If the direction of projection bisects the angle between the vertical and the inclined plane, then the range of projectile on the inclined plane is

  12. A.

     Zero

    B.

     Maximum

    C.

     Minimum

    D.

     None of these

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  13. Williot-Mohr diagram is used to determine deflection in

  14. A.

     Trusses only

    B.

     Beam only

    C.

     Rigid frames only

    D.

     Any type of structure

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  15. Total no of instantaneous centers of a machine having ‘n’ links, is

  16. A.

     n/2

    B.

     n

    C.

     (n - 1)

    D.

     n (n - 1)/2

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  17. The acceleration of a train starting from rest at any instant is 1/6(V + 1) m/sec² where ‘V’ is the velocity of the train in m/sec. The train will attain a velocity of 36 km/hour after travelling a distance of

  18. A.

     2000 m

    B.

     2100 m

    C.

     2200 m

    D.

     2300 m

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  19. 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

  20. A.

     6 m/sec

    B.

     12 m/sec

    C.

     24 m/sec

    D.

     48 m/sec

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