A. 4
C. > 12.5
D. < 10
Correct Answer: > 12.5 ✔
Last Updated: March 10, 2019
Related MCQs
- Which of the following conditions must be satisfied for lift force to be developed ?
- Boundary layer separation is caused by the __________?
- A floating/submerged body is always stable, if its centre of gravity__________?
- Which of the following is dimensionless ?
- The distribution of shear stress in a stream of fluid in a circular tube is__________?
- The ratio of actual discharge to theoretical discharge through an orifice is equal to__________?
- The Prandtl mixing length is__________?
- In hindered settling, the particles are__________?
- The component of acceleration resulting due to unsteady nature of flow is called __________ acceleration?
- The actual velocity at vena-contracta for flow through an orifice from a reservoir is given by__________?
- Flow rate of high velocity flue gas discharged through a stack to the atmosphere can be most conveniently measured by a __________?
- The losses in open channel flow generally vary as the __________?
- The effect of solid boundary on the fluid flow is confined to the boundary layer, except for fluids ?
- Potential function is applicable only for __________ flow?
- Colebrook equation for friction factor in turbulent flow is given by, f-0.5 = -4 loge [(ε/D) + (1.26/NRe √F). It reduces to Nikuradse equation for a value of (ϵ/D) equal to __________?
- Which of the following flow measuring devices is an area meter ?
- Which of the following equations applies to the fluid flow through a packed bed for very large Reynolds number ?
- The energy loss in flow through Venturimeter is less than that through flow nozzle, because in case of a flow nozzle, the ?
- The valve commonly used in pipes larger than 2″ dia is a__________?
- The ratio of maximum to average velocity in case of streamline flow between parallel plates is__________?
- At what value of crank angle (roughly), no flow of water from or into the air vessel takes place in case of a double acting reciprocating pump ?
- For the same terminal conditions and fitting size, the least friction loss is incurred in a/an ?
- Glass pipes can be joined by__________?
- The percentage slip in a reciprocating pump set is given by the % of (where, Q1 = actual discharge Q2 = theoretical discharge) ?
- Scale up of agitator design requires__________?
- The velocity for subsonic flow in a pipeline__________?
- For steady ideal fluid flow, the Bernoulli’s equation states that the__________?
- Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton’s law of viscosity. (II) Newton’s second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to boundary. (V) Fluid cannot penetrate a boundary?
- Purpose of air lift pump is to__________?
- A centrifugal pump used to pump water is used to pump an oil with specific gravity of 0.8 at the same rate. The power consumption will now__________?
- Select the correct practical example of steady non-uniform flow?
- Pressure co-efficient is the ratio of pressure forces to __________ forces?
- Which of the following is not a dimension-less parameter ?
- Identification of pipelines carrying different liquids and gases is done by the __________ of the pipe?
- The maximum delivery pressure of a reciprocating compressor may be about __________ kg/cm2?
- Plunger pumps are used for__________?
- A liquid is pumped at the rate of 600 litres using 1000 rpm. If the rpm is changed to 1100, the liquid pumped is __________ litres?
- The blades of a centrifugal impeller are said to be curved forward, if the __________ of the motion of impeller blades?
- If two capillary tubes of dia 0.5 mm and 1 mm are dipped in a pot containing mercury, then the rise of mercury is__________?
- Stoke’s law is valid, when the particle Reynolds number is __________?
- Transition length for turbulent flow in smooth pipe is equal to __________ times the pipe diameter?
- Velocity head on sudden enlargement in a horizontal pipe is converted into __________ head?
- Choose the set of pressure intensities that are equivalent ?
- Consider two pipes of same length and diameter through which water is passed at the same velocity. The friction factor for rough pipe is f1 and that for smooth pipe is f2. Pick out the correct statement ?
- Critical velocity in a pipe flow__________?
- The head loss due to sudden contraction is proportional to__________?
- The continuity equation of fluid mechanics utilises the principle of conservation of __________?
- Existence of boundary layer in fluid flow is because of the__________?
- The energy loss over a length of pipeline according to Darcy-Weisbach equation for pipe flow is __________ the mean velocity of flow?
- In case of end to end connection of two or more pipes in series, the __________ each pipe?
- What is the ratio of displacement thickness to nominal thickness for a linear distribution of velocity in the boundary layer on a flat plate ?