Mechanical Engineering : Engineering Mechanics QUESTIONS AND ANSWERS :: part4 : 16 to 20
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
16.130. In actual machines |
| mechanical advantage is greater than velocity ratio |
| mechanical advantage is equal to velocity ratio |
| mechanical advantage is less than velocity ratio |
| mechanical advantage is unity |
| none of the above. |
17.104. The necessary condition for forces to be in equilibrium is that these should be |
| coplanar |
| meet at one point ; |
| both (a) and (b) above |
| all be equal |
| something else. |
18.131. In ideal machines |
| mechanical advantage is greater than velocity ratio |
| mechanical advantage is equal to velocity ratio |
| mechanical advantage is less than velocity ratio |
| mechanical advantage is unity |
| none of the above. |
19.102. The co-efficient of friction depends upon |
| nature of surfaces |
| , area of contact |
| shape of the surfaces |
| ail of the above. |
| (a) and (b) above. |
20.117. The C.G. of a plane lamina will not be at its geometrical centre in the case of a |
| right angled triangle |
| equilateral triangle |
| square |
| circle |
| rectangle. |
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