A. Very low speeds
B. Smaller discharge
C. Higher capital &maintenance cost
D. High vibrations
Correct Answer: Higher capital &maintenance cost ✔
Last Updated: March 10, 2019
Related MCQs
- Check in a centrifugal pump is__________?
- For pipe flows, head is proportional to __________ at constant capacity(where, D = pipe diameter) ?
- A pressure head of 320 metres of water in meters of CCl4 (sp.gr = 1.6) will be__________?
- Which of the following quantities are computed by using the hydraulic radius for noncircular ducts ?
- The pressure head of a flow meter remains constant for__________?
- Pick out the Hagen-Poiseuille‟s equation ?
- A pipe of I.D. 4 m is bifurcated into two pipes of I.D. 2 m each. If the average velocity of water flowing through the main pipe is 5 m/sec, the average velocity through the bifurcated pipes is__________?
- Cd, Cc and Cv are related (for flow through an orifice) as (where, Cd = discharge co-efficient, Cc = co-efficient of contraction = (area of jet at vena-contracta/area of opening), Cv = co-efficient of velocity = (actual velocity at vena-contracta/theoretical velocity)?
- A fluid whose apparent viscosity increases with shear rate is termed as the __________ fluid?
- In case of a centrifugal pump, the ratio of total delivered pressure to pressure developed with the impeller is called the __________ efficiency?
- Very small pressure difference (< 5 mm water column) can be most conveniently measured by a/an __________ manometer?
- The flow of a liquid through tapering pipe at a constant rate is an example of __________ flow?
- The rate of shear versus the shear stress curves are time dependent for __________ fluid?
- The centre of pressure is__________?
- As the velocity V and thus the Reynolds number of a flow past a sphere increases from very low value, the drag force for Re << 1 ?
- The resistance wire used in a hot wire anemometer for conducting electrical current is made of__________?
- The terminal velocity of a solid spherical particle falling through a stationary fluid mass in the Stoke’s law range is proportional to the__________?
- The most suitable flow measuring device for the fluid flow measurement in a very large diameter pipeline is a__________?
- The bulk modulus of elasticity of a liquid__________?
- In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where M = molecular weight of the gas) ?
- In the laminar boundary layer flow over a flat plate, the ratio (δ/x) varies as: (where, ‘δ’ is the boundary layer thickness and ‘x’ is the distance from the leading edge in the direction of flow)?
- An ideal nozzle design aims at__________?
- One horsepower is equal to__________?
- In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where, T = absolute temperature) ?
- With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost__________?
- Acceleration head in a reciprocating pump__________?
- In case of a __________ the energy of flow is considerably decreased downstream of the machine?
- The normal stress is the same in all directions at a point in a fluid, when the fluid is__________?
- A pipe is defined as ‘hydraulically smooth’, if the friction factor__________?
- Dean number is concerned with the__________?
- The maximum delivery pressure of compressors can be upto __________ atmospheres?
- In case of centrifugal fan or blower, the gas capacity varies as __________?
- The dimension of dynamic viscosity is__________?
- Which of the following can be used for the direct measurement of volumetric flow rate of slurry ?
- Foot valves provided in pumps are __________ valves?
- At a constant speed of the centrifugal pump, it‟s __________ the impeller diameter?
- In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of__________?
- The velocity profile for a Bingham plastic fluid flowing (under laminar conditions) in a pipe is__________?
- When the momentum of one fluid is used for moving another fluid, such a device is called a/an__________?
- Steady fluid flow occurs, when the derivative of flow variables satisfy the following condition.
- Schedule number of a pipe, which is a measure of its wall thickness, is given by __________?
- For an unstable equilibrium of a floating body (where, M = metacentre.) ?
- Laminar flow of a Newtonian fluid ceases to exist, when the Reynolds number exceeds__________?
- The equation f-0.5 = 4.07 loge (NRe √f)-0.6 is called the __________?
- A Bingham fluid of viscosity μ = 10 Pa.s and yield stress, η0 = 10 KPa, is shared between flat parallel plates separated by a distance of 10-3 m. The top plate is moving with a velocity of 1 m/s. The shear stress on the plate is__________?
- The Prandtl Pitot tube measures the__________?
- Dimension of absolute viscosity is__________?
- Purpose of hydraulic accumulator is to__________?
- All pipes of a particular nominal size have the same__________?
- What is the co-efficient of contraction, if a fluid jet discharging from a 50 mm diameter orifice has a 40 mm diameter at its vena-contracta ?
- For Laminar flow through a packed bed, the pressure drop is proportional to (Vs is the superficial liquid velocity and Dp is the particle diameter) ?