#### Civil Engineering MCQs – Hydraulics and Fluid Mechanics Mcqs Latest

This post contains latest “**Civil Engineering MCQs – Hydraulics and Fluid Mechanics Mcqs”. **These mcqs of civil engineering will help out in daily routine life. You will get latest Civil Engineering Mcqs for written tests, interviews and etc. There are many professional and students worrying about their competitive exams, interviews, entrance exams and others, so these civil engineering mcqs of hydraulics & fluid mechanics will guide them in an easy way.

#### Latest Civil Engineering MCQs

By practicing these mcqs of C**ivil Engineering MCQs – Hydraulics and Fluid Mechanics Mcqs**, an individual for exams performs better than before. This post comprising of civil engineering objective questions and answers related to **“**Hydraulics And Fluid Mechanics Mcqs**“.** As wise people believe “Perfect Practice make a Man Perfect”. It is therefore practice these mcqs of civil engineering to approach the success. Tab this page to check **“Latest Hydraulics And Fluid Mechanics Mcqs”** for the preparation of **competitive mcqs, FPSC mcqs, PPSC mcqs, SPSC mcqs, KPPSC mcqs, AJKPSC mcqs, BPSC mcqs, NTS mcqs, PTS mcqs, OTS mcqs, Atomic Energy mcqs, Pak Army mcqs, Pak Navy mcqs, CTS mcqs, ETEA mcqs** and others.

#### Latest Hydraulics and Fluid Mechanics Mcqs

The most occurred **mcqs of ** Hydraulics And Fluid Mechanics in past papers. **Past papers of **Hydraulics And Fluid Mechanics Mcqs. **Past papers of** Hydraulics And Fluid Mechanics Mcqs . Mcqs are the necessary part of any competitive / job related exams. The Hydraulics And Fluid Mechanics Mcqs having specific numbers in any written test. It is therefore everyone have to learn / remember the related Hydraulics And Fluid Mechanics Mcqs. The Important series of Hydraulics And Fluid Mechanics Mcqs are given below:

**In an immersed body, center of pressure is ____________________?**

A. above the center of gravity

B. at the center of gravity **C. below be center of gravity**

D. could be above or below e.g. depending on density of body and liquid

E. unpredictable

**The time oscillation of a floating body with increase in metacentric height will be________________?**

A. higher

B. same **C. lower**

D. lower/higher depending on weight of body

E. unpredictable

**The normal stress is same in all directions at a point in a fluid ___________________?**

A. in case of an ideal fluid

B. only when the fluid is incompressible and has zero viscosity**C. when there is no motion of one fluid layer relative to an adjacent layer**

D. irrespective of the motion of one fluid layer relative to an adjacent layer

E. only when the fluid is frictionless

**Total pressure on a lmxlm gate immersed vertically at a depth of 2 m below the free water surface will be ___________________?**

**A. 1000 kg**

B. 2000 kg

C. 4000 kg

D. 8000 kg

E. 16000 kg

**Rotameter is a device used to measure____________________?**

A. velocity of fluid

B. absolute pressure **C. flow**

D. rotation

E. velocity of air

**Flow of water in a pipe about 3 meters in diameter can be measured by_________________?**

A. venturi

B. orifice plate

C. rotameter**D. pitot tube**

E. nozzle

**True one-dimensional flow occurs when___________________?**

**A. the direction and magnitude of the veiocity at all points are identical**

B. the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane

C. the magnitude and direction of the velocity do not change from point to point in the fluid

D. the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time

E. velocity, depth, pressure etc. change from point to point in the fluid flow

**In the case of steady flow of a fluid, the acceleration of any fluid particle is__________________?**

A. variable

B. constant **C. zero**

D. zero under limiting conditions

E. never zero

**During the opening of a valve in a pipe line, the flow is___________________?**

A. uniform **B. unsteady**

C. steady

D. laminar

E. free vortex type

**Tunnel Engineering MCQs – Civil Engineering**

**Gradually varied flow is____________________?**

A. non-steady uniform

B. non-steady non-uniform

C. steady uniform **D. steady non-uniform**

E. true one-dimensional

**Non uniform flow occurs when ____________________?**

A. the direction and magnitude of the velocity at all points are identical

B. the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane

C. the magnitude aricf direction of the velocity do not change from point to point in the fluid

D. the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time **E. velocity, depth, pressure, etc. change from point to point in the fluid flow**

**An ideal flow of any fluid must satisfy ___________________?**

A. boundary layer theory

B. Newton’s law of viscosity

C. Pascal law **D. continuity equation**

E. Bernoulli’s theorem

**For measuring flow by a venturimeter, if should be installed in__________________?**

A. horizontal line

B. vertical line

C. inclined line with flow downward

D. inclined line with upward flow**E. in any direction and in any location**

**Uniform flow occurs when____________________?**

A. the flow is streamline

B. the flow is steady **C. size and shape of the cross section in a particular length remain constant**

D. size and cross section change uniform¬ly along length

E. flow occurs at constant fate

**Steady flow occurs when____________________?**

A. the direction and magnitude of the velocity at all points are identical**B. the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time**

C. the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane

D. the magnitude and direction of the velocity do not change from point to point in the fluid

E. velocity, depth, pressure, etc. change from point to point in the fluid flow

**The flow in which each liquid particle has a definite path and their paths do not cross each other is called____________________?**

A. uniform flow

B. one dimensional flow

C. steady flow

D. turbulent flow**E. streamline flow**

#### Civil Engineering MCQs – Hydraulics and Fluid Mechanics Mcqs Latest

**The flow in which the velocity vector is identical in magnitude and direction at every point, for any given instant, is known as___________________?**

A. steady flow **B. uniform flow**

C. one dimensional flow

D. turbulent flow

E. streamline flow

**Flow occurring in a pipeline when a valve is being opened is ______________________?**

A. laminar **B. unsteady**

C. steady

D. vortex

E. rotational

**The flow in which conditions do not change with time at any point, is known as _____________________?**

A. uniform flow

B. one dimensional flow **C. steady flow**

D. turbulent flow

E. streamline flow

**The flow which neglects changes in a transverse direction is known as ____________________?**

**A. one dimensional flow**

B. steady flow

C. uniform flow

D. turbulent flow

E. streamline flow

**The flow in which the particles of a fluid attain such velocities that vary from point to point in magnitude and direction as well as from instant to instant, is known as_________________?**

A. uniform flow

B. one dimensional flow

C. steady flow**D. turbulent flow**

E. streamline flow

**General energy equation holds for_________________?**

A. turbulent flow

B. steady flow

C. laminar flow**D. non-uniform flow**

E. all of the above

**A streamline is defined as the line ________________?**

A. parallel to outer surface of pipe

B. parallel to central axis flow **C. of equal yelocity in a flow**

D. along which the pressure drop is uniform

E. which occurs in all flows

**Engineering Economy MCQs – Civil Engineering **

**A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?**

A. 0.4

B. 0.5 **C. 0.515**

D. 0.5

E. none of the above

**The velocity of jet of water travelling out of opening in a tank filled with water is proportional to___________________?**

A. head of water (h)

B. h3/1. **C. V/T**

D. h2

E. h2

**In a free vortex motion, the radial component of velocity everywhere is ________________?**

A. minimum

B. maximum **C. zero**

D. non-zero and finite

E. unpredictable

**A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is__________________?**

A. 0.4 **B. 0.6**

C. 0.83

D. 0.3

E. none of the above

**The region between the separation streamline and the boundary surface of the solid body is known as_________________?**

**A. wake**

B. lift

C. drag

D. boundary layer

E. aerofoil section

**The upper surface of a weir over which water flows is known is________________?**

A. nappe

B. crest **C. sill**

D. weir top

E. contracta

**Uniform flow occurs when___________________?**

A. the velocity of successive fluid pai-ticles, at any point, is the same at suc¬cessive periods of time

B. the direction and magnitude of the velocity at all points are identical **C. the magnitude and direction of the velocity do not change from point to point in the fluid**

D. the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plsr.e

E. velocity, depth, pressure, etc. change from point to point in the fluid flow

**Hydrometer is used to determine________________?**

**A. specific gravity of liquids**

B. specific gravity of gases

C. specific gravity of solids

D. relative humidity

E. density

**For similarity, in addition to models being geometrically similar to prototype, the following in both cases should also be equal__________________?**

A. ratio of inertial force to force due to gravitation

B. ratio of inertial force to force due to viscosity

C. ratio of inertial force to force due to surface tension**D. all the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity**

**Cavitation will begin when______________________?**

**A. the pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid**

B. pressure becomes more than critical pressure

C. pressure is increased

D. flow is increased

E. none of the above

**Principle of similitude forms the basis of__________________?**

A. hydraulic designs **B. designing models so that the result can be converted to prototypes**

C. comparing similarity between design and actual equipment

D. comparing two identical equipments

E. performing acceptance tests

**Cavitation is caused by___________________?**

A. high pressure

B. high velocity

C. weak material**D. low pressure**

E. low viscosity

**Bernoulli equation deals with the law of conservation of____________________?**

A. momentum

B. mass **C. energy**

D. work

E. force

**A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal tc__________________?**

**A. 10 kg**

B. 1000 kg

C. 100 kg

D. 1 kg

E. 10,000 kg

#### MCQs of Civil Engineering Latest

**For pipes, turbulent flow occurs when Reynolds number is_________________?**

A. between 2000 and 4000

B. less than 2000 **C. more than 4000**

D. less than 4000

E. none of the above

**The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to________________?**

A. 91Pa

B. 1 Pa

C. 981 Pa**D. 9810 Pa**

E. 98,100 Pa

**In order that flow takes place between two points in a pipeline, the differential pressure between thes^ points must be more than_________________?**

A. frictional force

B. surface friction

C. viscosity **D. all of the above**

E. none of the above

**A large Roynold number is indication of_________________?**

A. smooth and streamline flow

B. steady flow

C. laminar flow

D. turbulent flow**E. highly turbulent flow**

**Reynolds number is significant in____________________?**

A. simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls **B. full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc**

C. supersonics, as with projectile and jet propulsion

D. all of the above

E. none of the above

**Froude number is significant in____________________?**

A. full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.

B. supersonics, as with projectile and jet propulsion **C. simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls**

D. all of the above

E. none of the above

**The equation of continuity holds good when the flow __________________?**

A. is one dimensional

B. is steady

C. velocity is uniform at all the cross sec-tions**D. all of the above**

E. none of the above

**According to Bernoulli’s equation for steady ideal fluid flow_______________?**

A. total energy is constant throughout

B. velocity and pressure are inversely proportional

C. principle of conservation of mass holds **D. the energy is constant along a stream-line but may vary across streamlines**

E. none of the above

#### Strength of Materials MCQs – Civil Engineering

**Mach number is significant in___________________?**

**A. supersonics, as with projectiles and jet propulsion**

B. simultaneous motion through two fluids where there is a surface of dis-continuity, gravity force, and wave making effects, as with ship’s hulls

C. full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.

D. all of fhe above

E. none of the above

**The total energy of each particle at various places in the case of perfect incompres sible fluid flowing in continuous sream________________?**

D. keeps on decreasing

B. keeps on increasing **C. remains constant**

D. may increase/decrease

E. unpredictable

**Pitot tube is used for measurement of__________________?**

A. flow

B. pressure **C. velocity**

D. dsscharge

E. viscosity

**Normal depth in open channel flow is the depth of flow corresponding to_______________?**

A. unsteady flow

B. steady flow

C. laminar flow**D. uniform flow**

E. critical flow

**For hypersonic flow, the Mach number is___________________?**

A. greater than unity

B. unity

C. greater than 2**D. greater than 4**

E. greater than 10

**Two dimensional flow occurs when___________________?**

A. the direction and magnitude of the velocity at all points are identical

B. the magnitude and direction of the velocity do not change from point to point in the fluid

C. the velocity of successive fluid particles, at any point, is the same at successive periods of time **D. the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane**

E. velocity, depth, pressure, etc. change from point to point in the fluid flow

**All the terms of energy in Bernoulli’s equation have dimension of_______________?**

A. energy

B. mass

C. work **D. length**

E. time

**The fluid forces considered in the Navier Stokes equation are__________________?**

**A. gravity, pressure and viscous**

B. pressure, viscous and turbulent

C. gravity, pressure and turbulent

D. gravity, viscous and turbulent

E. none of the above

**For pipes, laminar flow occurs when Roynolds number is__________________?**

**A. less than 2000**

B. more than 4000

C. between 2000 and 4000

D. less than 4000

E. none of the above

**At the centre line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be_______________?**

A. maximum

B. minimum

C. zero

D. negative value**E. could be any value**

**Two pipe systems can be said to be equivalent, when the following quantites are same______________?**

**A. friction loss and flow**

B. flow and length

C. length and diameter

D. friction factor and diameter

E. velocity and diameter

#### Hydraulics And Fluid Mechanics Mcqs Latest

**In a forced vortex, the velocity of flow everywhere within the fluid is__________________?**

A. minimum

B. maximum

C. zero**D. non-zero finite**

E. unpredictable

**Select the correct statement ?**

A. Local atmospheric pressure depends upon elevation of locality only**B. Standard atmospheric pressure is the mean local atmospheric pressure a* sea level**

C. A barometer reads the difference be-tween local and standard atmospheric pressure

D. Local atmospheric pressure is always below standard atmospheric pressure

E. Gauge piessure is equal to atmospheric pressure plus instrument reading

**Choose the wrong statement ?**

A. For stability of floating cylinders or spheres, the e.g. of body must lie below the center of buoyancy

B. For stability of a submerged body, the center of gravity of body must lie directly below the center of buoyancy

C. If e.g. and center of buoyancy coincide, the submerged body must lie at neutral equilibrium for all positions

D. The center of buoyancy is located at the center of gravity of the displaced liquid **E. All floating bodies are stable**

**Choose the wrong statement?**

A. any weight, floating or immersed in a liquid, is acted upon by a buoyant force

B. The point through which buoyant force acts, is called the center of buoyancy

C. Buoyant force is equal to the weight of the liquid displaced **D. Center of buoyancy is located above the center of gravity of the displaced liquid v**

E. Relative density of liquids can be determined by means of the depth of flotation of hydrometer

**Choose the wrong statement?**

A. fluids conform to the shape of the containing vessels

B. fluids are capable of flowing

C. when in equilibrium, fluids cannot sustain tangential forces**D. when in equilibrium, fluids can sustain shear forces**

E. fluids have some degree of comprehensibility and offer little resistance to form

**Choose the wrong statement________________?**

A. Viscosity of liquids decreases with in-crease in temperature

B. Viscosity is due primarily to interaction between fluid molecules

C. Viscosity of a fluid is that property which determines the amount of its resistance to a shearing force **D. Viscosity of liquids is appreciably affected by change in pressure**

E. Viscosity is expressed as poise, stoke, or saybolt seconds