| 1. | Bluff body is the body of such a shape that pressure drag as compared to friction drag is ? | |
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same
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more
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less
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zero
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Report Question| 2. | For best hydraulic rectangular cross-section of an open channel, its depth should be equal to ? | |
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width
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two times the width
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half of the width
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three-eighth of the width
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| 3. | The value of coefficient of velocity for a sharp edged orifice is of the order of ? | |
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0.45
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0.5
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0.62
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None of these
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| 4. | When a liquid rotates at constant angular velocity about a vertical axis as a rigid body, the pressure ? | |
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increases linearly as its radial distance
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varies inversely as the altitude along any vertical line
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varies as the square of the radial distance
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decreases as the square of the radial distance
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| 5. | The discharge through a semi-circular weir is proportional ? | |
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H (-1/2)
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H (1/2)
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H ( 3/2)
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None of these
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| 6. | The rate of change of moment of momentum represents the ? | |
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force exerted by fluid
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torque applied by the fluid
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work done by the fluid
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power developed by the fluid
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| 7. | Separation of flow occurs when pressure gradient ? | |
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tends to approach zero
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becomes negative
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reduces to a value when vapour formation starts
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None of these
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| 8. | The ratio of actual discharge to theoretical discharge through an orifice is ? | |
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Cc/Dd
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Cd/Cv
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Cv/Cd
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CcCv
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| 9. | Coke is produced by ? | |
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pulverizing coal in inert atmosphere
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heating wood in a limited supply of air at temperatures below 300°C
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strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel
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binding the pulverized coal into briquettes
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| 10. | One kg of steam sample contains 0.8 kg dry steam; it’s dryness fraction is ? | |
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0.2
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0.8
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0.6
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0.5
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