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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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