Fluid Mechanics Mcqs
This set of Mechanical engineering Multiple Choice Questions & Answers (MCQs) focuses on study of “ Fluid Mechanics ”. These questions are chosen from a collection of most authoritative and best reference books on Mechanical engineering. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams, Jobs and interviews. One should practice our MCQS to assimilate Fluid Mechanics comprehensively.
2. All the terms of energy in Bernoulli’s equation have dimension of_______________?
Energy
Work
Mass
Length
3. The fluid forces considered in the Navier Stokes equation are__________________?
Gravity, pressure and viscous
Gravity, pressure and turbulent
Pressure, viscous and turbulent
Gravity, viscous and turbulent
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4. For pipes, laminar flow occurs when Roynolds number is__________________?
Less than 2000
Between 2000 and 4000
More than 4000
Less than 4000
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5. In a forced vortex, the velocity of flow everywhere within the fluid is__________________?
Maximum
Minimum
Zero
Non-zero finite
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6. In a static fluid ___________________?
Resistance to shear stress is small
Fluid pressure is zero
Linear deformation is small
Only normal stresses can exist
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7. An ideal flow of any fluid must fulfill the following____________________?
Newton’s law of motion
Newton’s law of viscosity
Pascal’ law
Continuity equation
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8. Liquids_________________?
Cannot be compressed
Occupy definite volume
Are not affected by change in pressure and temperature
Are not viscous
None of the above
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9. The value of mass density in kgsecVm4 for water at 0°C is_________________?
1
1000
100
101.9
10. Mercury does not wet glass. This is due to property of liquid known as__________________?
Adhesion
Cohesion
Surface tension
Viscosity
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11. Specific weight of water in S.I. units is equal to ________________?
1000 N/m3
10000 N/m3
9.81 xlO3 N/m3
9.81 xlO6N/m3
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12. The tendency of a liquid surface to contract is due to the following property_____________?
Cohesion
Adhesion
Viscosity
Surface tension
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13. A perfect gas____________________?
Has constant viscosity
Has zero viscosity
Is in compressible
Is of theoretical interest
None of the above
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14. A fluid in equilibrium can’t sustain____________________?
Tensile stress
Compressive stress
Shear stress
Bending stress
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15. The bulk modulus of elasticity with increase in pressure__________________?
Increases
Decreases
Remains constant
Increases first up to certain limit and then decreases
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