Mechanical Engineering : Engineering Mechanics QUESTIONS AND ANSWERS :: part2 : 11 to 15
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
11.31. According to law of triangle of forces |
| three forces acting at a point will be in equilibrium |
| three forces acting at a point can be represented by a triangle, each side being proportional to force |
| if three forces acting upon a patticle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equi�librium |
| if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two |
| none of the above. |
12.44. The centre of gravity of a uniform lamina lies at |
| the centre of heavy portion |
| the bottom surface |
| the mid point of its axis |
| all of the above |
| none of the above. |
13.51. The units of moment of inertia of mass are |
| kg m2 |
| m4 |
| kg/m2 |
| kg/m |
| m2/kg. |
14.45. Centre of gravity of a solid cone lies on the axis at the height |
| one-fourth of the total height above base |
| one-third of the total height above base |
| one-half of the total height above base |
| three-eighth of the total height above the base |
| none of the above. |
15.29. According to principle of moments |
| if a system of coplanar forces is in equilibrium, then their algebraic sum is zero |
| if a system of coplanar forces is in equilibrium, then the algebraic sum of their moments about any point in their plane is zero |
| the algebraic sum of the moments of any two forces about any point is equal to moment of theiwesultant about the same point |
| positive and negative couples can be balanced |
| none of the above. |
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