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Engineering Mechanics - Interview Questions and Answers

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91. 112. A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal
A. density of metal can't be determined
B. metal is twice as dense as water
C. metal will float in water
D. metal is twice as dense as unknown fluid
E. none of the above.
Explanation:
92. 1# Which of the following is the locus of a point that moves in such a manner that its distance from a fixed point is equal to its distance from a fixed line multiplied by a constant greater than one
A. ellipse
B. hyperbola
C. parabola
D. circle
E. none of the above.
Explanation:
93. 105. If three forces acting in different planes can be represented by a triangle, these will be in
A. non-equilibrium
B. partial equilibrium
C. full equilibrium
D. unpredictable
E. none of the above.
Explanation:
94. 122. The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is
A. same
B. double
C. half
D. four times
E. one fourth.
Explanation:
95. 111. Which of the following is not the unit of energy
A. kg m
B. kcal
C. wattr
D. watt hours
E. kg m x (m/sec)2.
Explanation:
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