civil engineering Mcqs
3051. 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__________________?
comments icon0

A. 1 kg

B. 10 kg

C. 10,000 kg

D. 100 kg

E. 1000 kg

3052. The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm. The pressure at 2.5 m below the oil surface will be ___________________?
comments icon0

A. 3.5 meters of water column

B. none of the above

C. 3 meters of water column

D. 4 m of water column

E. 2 meters of water column

3053. Two dimensional flow occurs when___________________?
comments icon0

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

3054. In a forced vortex, the velocity of flow everywhere within the fluid is__________________?
comments icon0

A. maximum

B. minimum

C. zero

D. unpredictable

E. non-zero finite
3055. The flow which neglects changes in a transverse direction is known as ____________________?
comments icon0

A. uniform flow

B. one dimensional flow

C. turbulent flow

D. steady flow

E. streamline flow

3056. Bernoulli equation deals with the law of conservation of____________________?
comments icon0

A. force

B. work

C. momentum

D. energy

E. mass

3057. The difference of pressure between the inside and outside of a liquid drop is________________?
comments icon0

A. p = T/2r

B. = Txr

C. p = 2T/r

D. none of the above

E. = T/r

3058. The line of action of the buoyant force acts through the centroid of the ___________________?
comments icon0

A. volume of the fluid vertically above the body

B. volume of the floating body

C. submerged body

D. displaced volume of the fluid

E. none of the above

3059. Differential monometer is used to measure _______________________?
comments icon0

A. velocity in pipes

B. very low pressure

C. difference of pressure between two points

D. atmospheric pressure

E. pressure in pipes, channels etc.

3060. Two pipe systems can be said to be equivalent, when the following quantites are same______________?
comments icon0

A. velocity and diameter

B. length and diameter

C. friction loss and flow

D. flow and length

E. friction factor and diameter

3061. Which of the following instruments is used to measure flow on the application of Bernoullis theorem __________________?
comments icon0
A. all of the above

B. Venturimeter

C. Orifice plate

D. pitot tube

E. nozzle

3062. The velocity of jet of water travelling out of opening in a tank filled with water is proportional to___________________?
comments icon0

A. h2

B. h2

C. h3/1.

D. head of water (h)

E. V/T
3063. Barometer is used to measure__________________?
comments icon0
A. atmospheric pressure

B. difference of pressure between two points

C. pressure in pipes, channels etc.

D. very low pressure

E. rain level

3064. Centre of pressure compared to e.g. is______________?
comments icon0

A. at same point

B. above or below depending on area of body

C. none of the above

D. above it

E. below it
3065. Surface energy per unit area of a surface is numerically equal to ___________________?
comments icon0

A. force of adhesion

B. viscosity

C. surface tension

D. force of cohesion

E. atmospheric pressure

3066. Mercury is often used in barometer because _________________?
comments icon0

A. it is the best liquid

B. the height of barometer will be less

C. its vapour pressure is so low that it may be neglected

D. both B. and C.

E. it moves easily

3067. Resultant pressure of the liquid in the case of an immersed body acts through _________________?
comments icon0

A. center of gravity

B. center of pressure

C. metacentre

D. in between e.g. and center of pressure

E. center of buoyancy

3068. Reynolds number is significant in____________________?
comments icon0
A. full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc

B. all of the above

C. none of the above

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

E. supersonics, as with projectile and jet propulsion

3069. For measuring flow by a venturimeter, if should be installed in__________________?
comments icon0
A. in any direction and in any location

B. horizontal line

C. inclined line with flow downward

D. inclined line with upward flow

E. vertical line

3070. The flow in which conditions do not change with time at any point, is known as _____________________?
comments icon0

A. one dimensional flow

B. steady flow

C. streamline flow

D. uniform flow

E. turbulent flow

3071. Gradually varied flow is____________________?
comments icon0

A. true one-dimensional

B. non-steady non-uniform

C. non-steady uniform

D. steady uniform

E. steady non-uniform
3072. Froude number is significant in____________________?
comments icon0

A. all of the above

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. supersonics, as with projectile and jet propulsion

D. none of the above

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

3073. Cavitation is caused by___________________?
comments icon0

A. weak material

B. low viscosity

C. low pressure

D. high pressure

E. high velocity

3074. The center of pressure of a surface subjected to fluid pressure is the point____________________?
comments icon0

A. on the surface at which gravitational force acis

B. at which all hydraulic forces meet

C. where pressure equivalent to hydraulic thrust will act

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

E. similar to metacentre

3075. Hydrometer is used to determine________________?
comments icon0

A. relative humidity

B. specific gravity of solids

C. specific gravity of liquids

D. specific gravity of gases

E. density

3076. All the terms of energy in Bernoullis equation have dimension of_______________?
comments icon0

A. work

B. energy

C. mass

D. time

E. length
3077. A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?
comments icon0

A. 0.4

B. 0.5

C. 0.5

D. 0.515

E. none of the above

3078. For a body floating in a liquid the normal pressure exerted by the liquid acts at _________________?
comments icon0

A. e.g. of the body

B. bottom surface of the body

C. all points on the surface of the body

D. all of the above

E. metacentre

3079. Desire lines are plotted in_________________?
comments icon0

A. traffic volume studies

B. origin and destination studies

C. accident studies

D. speed studies

3080. The camber of road should be approximately equal to___________________?
comments icon0

A. two times the longitudinal gradient

B. three times the longitudinal gradient

C. longitudinal gradient

D. half the longitudinal gradient
3081. The minimum design speed for hairpin bends in hill roads is taken as_______________?
comments icon0

A. 50 kmph

B. 40 kmph

C. 20 kmph

D. 30 kmph

3082. RC-2, MC-2 and SC-2 correspond to_______________?
comments icon0

A. viscosity in increasing order from RC-2 to SC-2

B. same viscosity

C. none of the above

D. viscosity in decreasing order from RC-2 to SC-2

3083. The shape of the camber, best suited for cement concrete pavements, is_______________?
comments icon0

A. combination of straight and parabolic

B. elliptical

C. parabolic

D. straight line
3084. The ruling design speed on a National Highway in plain terrain as per IRC recommendations is_____________?
comments icon0

A. 60 kmph

B. 80 kmph

C. 120 kmph

D. 100 kmph
3085. The diagram which shows all important physical conditions of an accident location like roadway limits, bridges, trees and all details of roadway conditions is known as_____________?
comments icon0

A. spot maps

B. collision diagram

C. pie chart

D. condition diagram
3086. On a single lane road with two way traffic, the minimum stopping sight distance is equal to______________?
comments icon0
A. two times the stopping distance

B. half the stopping distance

C. three times the stopping distance

D. stopping distance

3087. Select the incorrect statement?
comments icon0

A. Stop or red time of a signal is the sum of go and clearance intervals for the cross flow

B. Go or green time of a signal is the sum of stop and clearance intervals for the cross flow

C. The cycle length is normally 40 to 60 seconds for two phase signals

D. Clearance time is generally 3 to 5 seconds

3088. Percentage of free carbon in bitumen is______________?
comments icon0

A. none of the above

B. more than that in tar

C. equal to that in tar

D. less than that in tar
3089. A traffic rotary is justified where______________?
comments icon0

A. when traffic volume is more than 5000 vehicles per hour

B. space is limited and costly

C. number of intersecting roads is between 4 and 7

D. when traffic volume is less than 500 vehicles per hour

3090. Group index method of design of flexible pavement is_______________?
comments icon0

A. a semi empirical method

B. an empirical method based on physical properties of subgrade soil

C. an empirical method based on strength characteristics of subgrade soil

D. a theoretical method

3091. Compared to a level surface, on a descending gradient the stopping sight distance is_______________?
comments icon0

A. less

B. more

C. dependent on the speed

D. same

3092. The background colour of the informatory sign board is______________?
comments icon0
A. yellow

B. red

C. green

D. white

3093. Which of the following tests measures the toughness of road aggregates ?
comments icon0

A. shape test

B. crushing strength test

C. abrasion test

D. impact test
3094. Rigidity factor for a tyre pressure greater than 7 kg/cm2 is_______________?
comments icon0

A. equal to 1

B. zero

C. greater than 1

D. less than 1
3095. The direct interchange ramp involves____________?
comments icon0

A. diverging to the left side and merging from right

B. diverging to the right side and merging from left

C. diverging to the right side and merging from right

D. diverging to the left side and merging from left

3096. The entrance and exit curves of a rotary have_______________?
comments icon0
A. different radii and different widths of pavement

B. equal radii but pavement width is more at entrance than at exit curve

C. equal pavement widths but radius is more at entrance curve than at exit curve

D. equal radii and equal widths of pavement

3097. The maximum allowable Los Angeles abrasion value for high quality surface course is_______________?
comments icon0
A. 30%

B. 20%

C. 45%

D. 10%

3098. The aggregates required for one kilometer length of water bound macadam road per meter width and for 10 mm thickness is________________?
comments icon0

A. 10 cubic meter

B. 15 cubic meter

C. 12 cubic meter

D. 8 cubic meter

3099. Camber in the road is provided for_______________?
comments icon0

A. having proper sight distance

B. counteracting the centrifugal force

C. effective drainage

D. none of the above

3100. With increase in speed of the traffic stream, the maximum capacity of the lane________________?
comments icon0

A. decreases

B. first decreases and then increases after reaching a minimum value at optimum speed

C. increases

D. first increases and then decreases after reaching a maximum value at optimum speed