civil engineering Mcqs
6001. Which of the following manometer has highest sensitivity __________________?
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A. U-tube with mercury

B. U-tube with water

C. inclined U-tube

D. micro-manometer with water

E. displacement type

6002. Eulers dimensionless number relates the following_______________?
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A. viscous force and buoyancy force

B. pressure force and inertial force

C. viscous force and inertial force

D. pressure force and viscous force

E. inertial force and gravity

6004. To avoid an interruption in the flow of a syphon, an air vessel is provided______________?
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A. at the summit

B. none of the above

C. at the outlet

D. at the inlet

E. ay nay point between inlet and outlet

6005. The vapour pressure over the concave surface is__________________?
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A. less man the vapour pressure over the plane surface

B. greater than the vapour pressure over the plane surface

C. zero

D. none of the above

E. equal to the vapour pressure over the plane surface

6006. The flow in which conditions do not change with time at any point, is known as _____________________?
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A. uniform flow

B. steady flow

C. streamline flow

D. one dimensional flow

E. turbulent flow

6008. Two dimensional flow occurs when___________________?
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A. velocity, depth, pressure, etc. change from point to point in the fluid flow

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

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

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

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

6009. When a body floating in a liquid, is displaced slightly, it oscillates about ___________________?
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A. center of pressure

B. center of buoyancy

C. liquid surface

D. e.g. of body

E. metacentre
6010. Choose the wrong statement ?
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A. If e.g. and center of buoyancy coincide, the submerged body must lie at neutral equilibrium for all positions

B. All floating bodies are stable

C. The center of buoyancy is located at the center of gravity of the displaced liquid

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

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

6011. Uniform flow occurs when____________________?
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A. size and shape of the cross section in a particular length remain constant

B. the flow is steady

C. flow occurs at constant fate

D. the flow is streamline

E. size and cross section change uniformly along length

6013. General energy equation holds for_________________?
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A. laminar flow

B. steady flow

C. turbulent flow

D. all of the above

E. non-uniform flow
6014. The horizontal component of buoyant force is__________________?
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A. negligible

B. zero

C. same as buoyant force

D. non of these

6015. A liquid would wet the solid, if adhesion forces as compared to cohesion forces are_________________?
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A. equal

B. more

C. less

D. there is no such criterion

E. less at low temperature and more at high temperature

6017. A pressure of 25 m of head of water is equal to________________?
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A. 25 kN/m2

B. 2500 kN/m2

C. 245 kN/m2

D. 12.5 kN/m2

E. 2.5kN/m2

6018. Pressure of the order of 10? torr can be measured by_______________ ?
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A. McLeod gauge

B. Bourdon tube

C. micro-manometer

D. Pirani Gauge

E. ionisastion gauge
6019. Newtons law of viscosity is a relationship between________________?
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A. shear stress and viscosity

B. shear stress anctthejiate of angular distortion

C. pressure, velocity and viscosity

D. shear stress, pressure and rate of angular distortion

E. shear stress, velocity and viscosity

6021. The vapour pressure over the concave surface is________________?
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A. zero

B. greater than the vapour pressure over the plane surface

C. less man the vapour pressure over the plane surface

D. equal to the vapour pressure over the plane surface

E. none of the above

6022. According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to __________________?
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A. more than the weight of the body

B. less than the weight of the body

C. weight of the fluid displaced by the body

D. weight of body plus the weight of the fluid displaced hy the body

E. the weight of the body

6023. Barometer is used to measure__________________?
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A. very low pressure

B. rain level

C. atmospheric pressure

D. pressure in pipes, channels etc.

E. difference of pressure between two points

6026. For a floating body to be in equilibrium __________________?
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A. center of buoyancy and e.g. must lie on same vertical plane

B. none of the above

C. meta center should be above e.g.

D. a righting couple should be formed

E. all of the above
6028. 4-61. Kinematic viscosity is equal to________________?
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A. 1/dynamicviscosity x density

B. dynamic viscosity/density

C. dynamicviscosity x density

D. density/dynamic viscosity

E. same as dynamic viscosity

6030. Surface energy per unit area of a surface is numerically equal to ___________________?
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A. surface tension

B. force of adhesion

C. viscosity

D. atmospheric pressure

E. force of cohesion

6031. Non uniform flow occurs when ____________________?
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A. velocity, depth, pressure, etc. change from point to point in the fluid flow

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 direction and magnitude of the velocity at all points are identical

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

6033. Ratio of inertia force to surface Jension is known as ________________________?
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A. Mach number

B. Webers number

C. Froude number

D. Reynolds number

E. none of the above

6034. Principle of similitude forms the basis of__________________?
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A. performing acceptance tests

B. hydraulic designs

C. comparing two identical equipments

D. designing models so that the result can be converted to prototypes

E. comparing similarity between design and actual equipment

6036. The center of pressure of a surface subjected to fluid pressure is the point____________________?
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A. on the surface at which gravitational force acis

B. on the surface at which resultant pres-sure acts

C. where pressure equivalent to hydraulic thrust will act

D. similar to metacentre

E. at which all hydraulic forces meet

6037. For pipes, laminar flow occurs when Roynolds number is__________________?
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A. none of the above

B. less than 4000

C. more than 4000

D. less than 2000

E. between 2000 and 4000

6038. In an isothermal atmosphere, the pressure__________________?
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A. unpredictable

B. remains constant

C. decreases linearly with elevation

D. increases exponentially with elevation

E. varies in the same way as the density
6042. Select the correct statement ?
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A. Standard atmospheric pressure is the mean local atmospheric pressure a* sea level

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

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

D. Local atmospheric pressure is always below standard atmospheric pressure

E. Local atmospheric pressure depends upon elevation of locality only

6043. A large Roynold number is indication of_________________?
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A. highly turbulent flow

B. steady flow

C. laminar flow

D. turbulent flow

E. smooth and streamline flow

6044. Dynamic viscosity of most of the liquids with rise in temperature____________________?
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A. remains unaffected

B. decreases

C. unpredictable

D. none of the above

E. increases

6046. Cavitation is caused by___________________?
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A. low pressure

B. high velocity

C. high pressure

D. weak material

E. low viscosity

6047. If the surface of liquid is convex, men_________________?
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A. cohesion pressure is increased

B. cohesion pressure is decreased

C. there is no cohesion pressure

D. none of the above

E. cohesion pressure is negligible

6049. Froude number is significant in____________________?
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A. full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.

B. simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ships hulls

C. all of the above

D. supersonics, as with projectile and jet propulsion

E. none of the above

6050. Gradually varied flow is____________________?
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A. true one-dimensional

B. steady uniform

C. steady non-uniform

D. non-steady uniform

E. non-steady non-uniform