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Engineering Mechanics - Interview Questions and Answers

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36. 54. A trolley wire weighs 1.2 kg per metre length. The ends of the wire are attached to two poles 20 metres apart. If the horizontal tension is 1500 kg find the dip in the middle of the span
A. 2.5 cm
B. 3.0 cm
C. 4.0 cm
D. 5.0 cm
E. 2.0 cm.
Explanation:
37. 50. The centre of gravity of a triangle lies at the point of
A. concurrence of the medians
B. intersection of its altitudes
C. intersection of bisector of angles
D. intersection of diagonals
E. all of the above.
Explanation:
38. 30. Which of the following is not a vector quantity
A. weight
B. velocity
C. acceleration
D. force
E. moment.
Explanation:
39. 63. 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
A. maximum
B. minimum
C. zero
D. infinity
E. same as the force applied.
Explanation:
40. 62. In the equation of virtual work, following force is neglected
A. reaction of any smooth surface with which the body is in contact
B. reaction of a rough surface of a body which rolls on it without slipping
C. reaction at a point or an axis, fixed in space, around which a body is con-strained to turn
D. all of the above
E. none of the above.
Explanation:
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