Fluid Mechanics

181.Fanning friction factor is equal to (where, fB = Blasius friction factor).

1. f_B/4
2. f_B/2
3. 4f_B
4. 2f_B

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182.Flow measurement in an open channel is done by a/an

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

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183.Flow rate of high velocity flue gas discharged through a stack to the atmosphere can be most conveniently measured by a

1. Pitot tube
2. Manometer
3. Rotameter
4. None of these

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184.Fluid flow at increasing rate through a diverging pipe is an example of _________ flow.

1. Steady uniform
2. Non-steady uniform
3. Steady non-uniform
4. Non-steady non-uniform

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185.Fluid flow in a/an _________ is an example of pressure flow.

1. Partially filled pipeline
2. Pipe
3. Open channel
4. River

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186.Fluid flow through a packed bed is represented by the _________ equation.

1. Fanning's
2. Ergun's
3. Hagen-Poiseuille’s
4. None of these

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187.Fluid resistance to shear depends upon its

1. Rate of transfer of molecular momentum
2. Cohesion
3. Both (A) and (B)
4. Neither (A) nor (B)

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188.Fluidised beds are formed, when the

1. Fluid friction is zero
2. Gravity force is less than the fluid friction
3. Pressure forces equal gravity forces
4. Sum of the fluid friction and pressure forces is equal and opposite to gravity forces

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189.Foot valve provided in the pump is a _________ valve.

1. Direction control
2. Back pressure
3. Relief
4. Pressure reduction

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190.Foot valves are provided in the suction line of a centrifugal pump to

1. Avoid priming, every time we start the pump
2. Remove the contaminant present in the liquid
3. Minimise the fluctuation in discharge
4. Control the liquid discharge

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