Mechanical Engineering : Hydraulic And Fluid Machines QUESTIONS AND ANSWERS :: part8 : 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.A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ? |
| 0.5 |
| 0.4 |
| 0.515 |
| 0.5 |
| none of the above. |
2.For pipes, laminar flow occurs when Roynolds number is |
| less than 2000 |
| between 2000 and 4000 |
| more than 4000 |
| less than 4000 |
| none of the above. |
3.The upper surface of a weir over which water flows is known is |
| crest |
| nappe |
| sill |
| weir top |
| contracta. |
4.According to Bernoulli's equation for steady ideal fluid flow |
| principle of conservation of mass holds |
| velocity and pressure are inversely proportional |
| total energy is constant throughout |
| the energy is constant along a stream-line but may vary across streamlines |
| none of the above. |
5.The equation of continuity holds good when the flow |
| is steady |
| is one dimensional |
| velocity is uniform at all the cross sec-tions |
| all of the above |
| none of the above. |
More Hydraulic And Fluid Machines QUESTIONS AND ANSWERS available in next pages
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