Mechanical Engineering : Engineering Mechanics QUESTIONS AND ANSWERS :: part3 : 1 to 5
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
1.63. 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 |
| maximum |
| minimum |
| zero |
| infinity |
| same as the force applied. |
2.62. In the equation of virtual work, following force is neglected |
| reaction of any smooth surface with which the body is in contact |
| reaction of a rough surface of a body which rolls on it without slipping |
| reaction at a point or an axis, fixed in space, around which a body is con-strained to turn |
| all of the above |
| none of the above. |
3.59. The centre of percussion of a solid cylinder of radius r resting on a horizontal plane will be |
| r/2 |
| 2r/3 |
| r/A |
| 3r/2 |
| 3r/A. |
4.70. Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction |
| along the plane |
| horizontally |
| vertically |
| at an angle equal to the angle of fric�tion to the inclined plane |
| unpredictable. |
5.73. On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be |
| towards the wall at its upper end |
| away from the wall at its upper end |
| upwards at its upper end |
| downwards at its upper end |
| none of the above. |
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