Mechanical Engineering : Engineering Mechanics QUESTIONS AND ANSWERS :: part3 : 21 to 25
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
21.76. Frictional force encountered after commencement of motion is called |
| post friction |
| limiting friction |
| kinematic friction |
| frictional resistance |
| dynamic friction. |
22.88. Limiting force of friction is the |
| tangent of angle between normal-reac-tion and the resultant of normal reac-tion and limiting friction |
| ratio of limiting friction and normal reaction |
| the friction force acting when the body is just about to move |
| the friction force acting when the body is in motion |
| minimum force of friction. |
23.74. On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be |
| downwards at its upper end |
| upwards at its upper end |
| perpendicular to the wall at its upper end |
| zero at its upper end |
| none of the above. |
24.69. The coefficient of friction depends on |
| area of contact |
| shape of surfaces |
| strength of surfaces |
| nature of surface |
| all of the above. |
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