| 1. | The maximum velocity of an airplane in steady level flight will occur at an angle of attack of ? | |
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20.5°
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18.5°
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22.5°
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26.5°
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View Answer
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Report Question| 2. | The wave produced due to surface tension in a shallow channel is known as ? | |
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gravity wave
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capillary wave
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elastic wave
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None of these
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| 3. | Which one of the following is an axial flow turbine ? | |
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Pelton wheel
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Francis turbine
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Kaplan turbine
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None of these
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| 4. | Pseudo plastic is a fluid for which ? | |
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dynamic viscosity decreases as the rate of shear increases
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Newton's law of viscosity holds good
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dynamic viscosity increases as the rate of shear increases
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dynamic viscosity increases with the time for which shearing forces are applied
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| 5. | Centrifugal pumps have which of the following advantages 1. Low initial cost 2. Compact, occupying less floor space 3. Easy handling of highly viscous fluids Select the correct answer using the codes given below ? | |
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1, 2 and 3
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1 and 2
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1 and 3
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2 and 3
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| 6. | What is the unit of dynamic viscosity of a fluid termed ‘poise’ equivalent to ? | |
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dyne/cm²
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gs/cm
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dyne-s/cm²
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g-cm/sec
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| 7. | Which one of the following conditions will linearize the Navier – Stokes equations to make it amenable for analytical solutions ? | |
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Low Reynolds number (Re << 1)
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High Reynolds number (Re >> 1)
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Low Mach Number (M <<1)
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High Mach Number (M >> 1)
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| 8. | Which of the following advantages is/are possessed by a Kaplan turbine over a Francis turbine 1. Low frictional losses 2. Part load efficiency is considerably high 3. More compact and smaller in size Select the correct answer using the codes given below ? | |
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Only 1
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1 and 2
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2 and 3
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1, 2 and 3
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| 9. | Non uniform flow occurs when ? | |
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the direction and magnitude of the velocity at all points are identical
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the velocity of successive fluid particles, at any point, is the same at successive periods of time
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the magnitude and direction of the velocity do not change from point to point in the fluid
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velocity, depth, pressure etc., change from point to point in the fluid flow
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| 10. | The length of divergent portion of venturimeter in comparison to convergent portion is ? | |
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same
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more
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less
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more or less depending on capacity
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