Civil Engineering :: Applied Mechanics

Q.   The centre of gravity of a triangle is at the point where three

      A.   medians of the triangle meet

      B.   perpendicular bisectors of the sides of the triangle meet

      C.   bisectors of the angle of the triangle meet

      D.   none of these.

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Answer: Option B

Explanation ::

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Q.   The forces which meet at one point and have their lines of action in different planes
       are called

      A.   coplaner non-concurrent forces

      B.   non-coplaner concurrent forces

      C.   non-coplaner non-current forces

      D.   intersecting forces

      E.   none of these.

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Answer: Option B

Explanation ::

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Q.   At a given instant ship A is travelling at 6 km/h due east and ship B is travelling at
      8km/h due north. The velocity of B relative to A is

      A.   7 km/hrs

      B.   2 km/hrs

      C.   1 km/hrs

      D.   10 km/hrs

      E.   14 km/hrs.

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Answer: Option D

Explanation ::

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Q.   The locus of the instantaneous centre of a moving rigid body, is

      A.   straight line

      B.   involute

      C.   centroid

      D.   spiral.

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Answer: Option C

Explanation ::