Fluid Mechanics

681.Which of the following facilitates close control of flow of fluids?

1. Gate valve
2. Globe valve
3. Butterfly valve
4. Check valve

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682.Which of the following factors does not contribute to the pressure drop in a pipeline?

1. Velocity of fluid
2. Size of pipe
3. Length of pipe and number of bends
4. None of these

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683.Which of the following flow measuring devices is an area meter?

1. Venturimeter
2. Orificemeter
3. Anemometer
4. Rotameter

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684.Which of the following fluid forces are not considered in the Navier-Stoke's equation?

1. Gravity forces
2. Viscous forces
3. Pressure forces
4. Turbulent forces

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685.Which of the following has the maximum compression ratio?

1. Blower
2. Compressor
3. Vacuum pump
4. Fan

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686.Which of the following has the minimum compressibility?

1. Water at room temperature
2. Air at room temperature
3. Oxygen at room temperature
4. Nitrogen at room temperature

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687.Which of the following is a dimensionless parameter?

1. Angular velocity
2. Specific weight
3. Kinematic viscosity
4. None of these

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688.Which of the following is a Newtonian fluid?

1. Rubber latex
2. Sewage sludge
3. Quicksand
4. Non-colloidal solution

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689.Which of the following is an undesirable property of a manometric liquid?

1. Non-sticky & non-corrosive nature
2. High vapour pressure
3. Low viscosity & surface tension
4. Low co-efficient of thermal expansion

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690.Which of the following is dimensionless?

1. Angular velocity
2. Fanning friction factor
3. Specific volume
4. None of these

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