civil engineering MCQs – Page 149

Practise multiple-choice questions from civil engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

civil engineering Mcqs

2961. Choose the wrong statement?
0

A. when in equilibrium, fluids can sustain shear forces

B. fluids are capable of flowing

C. fluids have some degree of compressibility and offer little resistance to form

D. when in equilibrium, fluids cannot sustain tangential forces

E. fluids conform to the shape of the con-taining vessels

2962. Center of buoyancy is the___________________?
0

A. does not exist

B. center of pressure of displaced volume

C. e.g. of floating body

D. none of the above

E. centroid of the displaced volume of fluid

2963. Which of the following manometer has highest sensitivity __________________?
0

A. micro-manometer with water

B. U-tube with water

C. inclined U-tube

D. displacement type

E. U-tube with mercury

2964. A model of torpedo is tested in a towing tank at a velocity of 25 m/sec. The prototype is expected to attain a velocity of 5 m/sec. What model scale has been used ?
0

A. 01:02.5

B. 1:V5?

C. 1:25

D. 1 : 5

E. 1 : 53/2

2965. The continuity equation is connected with_______________?
0

A. viscous/unviscous fluids

B. open channel/pipe flow

C. compressibility of fluids

D. steady/unsteady flow

E. conservation of mass

2966. Rotameter is a device used to measure____________________?
0

A. flow

B. absolute pressure

C. rotation

D. velocity of fluid

E. velocity of air

2967. When a body floating in a liquid, is displaced slightly, it oscillates about ___________________?
0

A. liquid surface

B. center of pressure

C. metacentre

D. e.g. of body

E. center of buoyancy

2968. The process of diffusion of one liquid into the other through a semi-permeable membrane is called _______________?
0

A. surface tension

B. cohesion

C. viscosity

D. osmosis

E. diffusivity

2969. The time oscillation of a floating body with increase in metacentric height will be________________?
0

A. unpredictable

B. lower/higher depending on weight of body

C. same

D. lower

E. higher

2970. The units of dynamic or absolute viscosity are_______________?
0

A. metres2 per sec

B. none of the above

C. newton-sec per meter

D. kg sec/meter

E. newton-sec2 per meter

2971. Uniform flow occurs when____________________?
0

A. flow occurs at constant fate

B. size and cross section change uniformly along length

C. the flow is steady

D. size and shape of the cross section in a particular length remain constant

E. the flow is streamline

2972. A body floats in stable equilibrium________________?
0

A. when its e.g. is below its center of buoyancy

B. when the metancentre is above e.g

C. when its meatcentric height is zero

D. none of the above

E. metacentre has nothing to do with position of e.g. for determining stability

2973. An open vessel of water is accelerated up an inclined plane. The free water surface will___________________?
0

A. make an angle in direction of inclination of inclined plane

B. none of the above

C. make an angle in opposite direction to inclination of inclined plane

D. be horizontal

E. any one of above is possible

2974. The resultant of all normal pressures acts_________________?
0

A. at center of pressure

B. vertically downwards

C. at e.g. of body

D. at metacentre

E. vertically upwards

2975. Choose the wrong statement________________?
0

A. Viscosity of liquids is appreciably affected by change in pressure

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

C. Viscosity is due primarily to interaction between fluid molecules

D. Viscosity of a fluid is that property which determines the amount of its resistance to a shearing force

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

2976. For a floating body to be in stable equilibrium, its metacentre should be_________________ ?
0

A. between e.g. and center of pressure

B. below the center of buoyancy

C. above the center of buoyancy

D. below the center of gravity

E. above the center of gravity

2977. Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the_______________?
0

A. force of adhesion

B. force of diffusion

C. force of friction

D. none of die above

E. force of cohesion

2978. In order that flow takes place between two points in a pipeline, the differential pressure between thes^ points must be more than_________________?
0

A. all of the above

B. none of the above

C. viscosity

D. surface friction

E. frictional force

2979. For hypersonic flow, the Mach number is___________________?
0

A. unity

B. greater than 10

C. greater than 4

D. greater than unity

E. greater than 2

2980. The speed of sound in a ideal gas varies directly as its ______________?
0

A. temperature

B. pressure

C. absolute temperature

D. density

E. modulus of elasticity

Previous Next

Showing 2961 to 2980 of 6149 mcqs