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Engineering Mechanics - Interview Questions and Answers

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1. 20. The weight of a body is due to
A. centripetal force of earth
B. gravitational pull exerted by the earth
C. forces experienced by body in atmos-phere
D. force of attraction experienced by par-ticles
E. gravitational force of attraction towards the centre of the earth.
Explanation:
2. 3. The unit of power in S.I. units is
A. newton metre
B. watt
C. joule
D. kilogram metre/sec.
E. pascal per sec.
Explanation:
3. 16. Which of the following is not the unit of distance ?
A. angstrom
B. light year
C. micron
D. millimetre
E. milestone.
Explanation:
4. 8. Effect of a force on a body depends upon
A. magnitude
B. direction
C. position or line of action
D. all of the above
E. none of the above.
Explanation:
5. 7. Which is the correct statement about law of polygon of forces ?
A. if any number of forces acting at a point can be represented by the sides
B. polygon taken in order, then the forces are in equilibrium
C. if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then the forces are in equi�librium
D. if a polygon representing forces acting at a point is closed then forces are in equilibrium
E. opt 5
Explanation:
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