MCQOPTIONS
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MCQOPTIONS
This section includes 270 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
_ Which of the following instrument can be used for measuring speed of a submarine moving in deep sea$? |
| A. | Venturimeter |
| B. | hot wire anemometer |
| C. | rotameter |
| D. | pitot tube |
| Answer» E. | |
| 102. |
_ Manometer is used to measure$? |
| A. | pressure in pipes, channels etc |
| B. | atmospheric pressure |
| C. | very low pressure |
| D. | difference of pressure between two points |
| Answer» B. atmospheric pressure | |
| 103. |
_ The discharge over a broad crested weir is maximum when the depth of flow is (where H is the available head)$? |
| A. | H/3 |
| B. | H/2 |
| C. | 2 H/5 |
| D. | 2 H/3 |
| Answer» E. | |
| 104. |
_ For measuring flow by a venturimeter, if should be installed in$? |
| A. | vertical line |
| B. | horizontal line |
| C. | inclined line with upward flow |
| D. | in any direction and in any location. |
| Answer» E. | |
| 105. |
_ Choose the wrong statement$? |
| A. | The center of buoyancy is located at the center of gravity of the displaced liquid |
| B. | For stability of a submerged body, the center of gravity of body must lie directly below the center of buoyancy |
| C. | For stability of floating cylinders or spheres, the e.g. of body must lie below the center of buoyancy |
| D. | All floating bodies are stable |
| Answer» E. | |
| 106. |
_ The horizontal component of force on a curved surface is equal to the$? |
| A. | product of pressure intensity at its centroid and area |
| B. | force on a vertical projection of the curved surface |
| C. | weight of liquid vertically above the curved surface |
| D. | force on the horizontal projection of the curved surface |
| Answer» C. weight of liquid vertically above the curved surface | |
| 107. |
_ The process of diffusion of one liquid into the other through a semi-permeable membrane is called$? |
| A. | viscosity |
| B. | osmosis |
| C. | surface tension |
| D. | cohesion |
| Answer» C. surface tension | |
| 108. |
_ Centre of buoyancy always$? |
| A. | coincides with the centre of gravity |
| B. | coincides with the centroid of the volume of fluid displaced |
| C. | remains above the centre of gravity |
| D. | remains below the centre of gravity |
| Answer» C. remains above the centre of gravity | |
| 109. |
_ Rain drops are spherical because of$? |
| A. | viscosity |
| B. | air resistance |
| C. | surface tension forces |
| D. | atmospheric pressure |
| Answer» D. atmospheric pressure | |
| 110. |
_ Principle of similitude forms the basis of$? |
| A. | comparing two identical equipments |
| B. | designing models so that the result can be converted to prototypes |
| C. | comparing similarity between design and actual equipment |
| D. | hydraulic designs |
| Answer» C. comparing similarity between design and actual equipment | |
| 111. |
_ The property of a fluid which enables it to resist tensile stress is known as$? |
| A. | compressibility |
| B. | surface tension |
| C. | cohesion |
| D. | adhesion |
| Answer» D. adhesion | |
| 112. |
_ Select the correct statement$? |
| A. | Local atmospheric pressure depends upon elevation of locality only |
| B. | Standard atmospheric pressure is the mean local atmospheric pressure a* sea level |
| C. | Local atmospheric pressure is always below standard atmospheric pressure |
| D. | A barometer reads the difference be-tween local and standard atmospheric pressure |
| Answer» C. Local atmospheric pressure is always below standard atmospheric pressure | |
| 113. |
_ A metal with specific gravity of o floating in a fluid of same specific gravity a will$? |
| A. | sink to bottom |
| B. | float over fluid |
| C. | partly immersed |
| D. | be fully immersed with top surface at fluid surface |
| Answer» E. | |
| 114. |
_ Fluid is a substance that$? |
| A. | cannot be subjected to shear forces |
| B. | always expands until it fills any container |
| C. | has the same shear stress.at a point regardless of its motion |
| D. | cannot remain at rest under action of any shear force |
| Answer» E. | |
| 115. |
_ The theoretical value of coefficient of contraction of a sharp edged orifice is$? |
| A. | 0.611 |
| B. | 0.85 |
| C. | 0.98 |
| D. | 1.00 |
| Answer» B. 0.85 | |
| 116. |
_ The ratio of average velocity to maximum velocity for steady laminar flow in circular pipes is$? |
| A. | 1/2 |
| B. | 2/3 |
| C. | 3/2 |
| D. | 2 |
| Answer» B. 2/3 | |
| 117. |
_ Resultant pressure of the liquid in the case of an immersed body acts through$? |
| A. | center of gravity |
| B. | center of pressure |
| C. | metacentre |
| D. | center of buoyancy |
| Answer» C. metacentre | |
| 118. |
_ Steady flow occurs when$? |
| 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 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 plane |
| Answer» C. the magnitude and direction of the velocity do not change from point to point in the fluid | |
| 119. |
_ The unit of kinematic viscosity is$? |
| A. | gm/cm-sec² |
| B. | dyne-sec/cm² |
| C. | gm/cm²-sec |
| D. | cm²/sec |
| Answer» E. | |
| 120. |
_ Fluid is a substance which offers no resistance to change of$? |
| A. | pressure |
| B. | flow |
| C. | shape |
| D. | volume |
| Answer» D. volume | |
| 121. |
_ Pressure of the order of 10''' torr can be measured by$? |
| A. | Bourdon tube |
| B. | Pirani Gauge |
| C. | micro-manometer |
| D. | ionisastion gauge |
| Answer» E. | |
| 122. |
_ If a sphere of diameter 1 cm falls in castor oil of kinematic viscosity 10 stokes, with a terminal velocity of 1.5 cm/sec, the coefficient of drag on the sphere is$? |
| A. | less than 1 |
| B. | between 1 and 100 |
| C. | 160 |
| D. | 200 |
| Answer» D. 200 | |
| 123. |
_ The continuity equation pi V,A,= p2V2A2 is based on the following assumption regarding flow of fluid (where pi and p2 are mass densities.)$? |
| A. | steady flow |
| B. | uniform flow |
| C. | incompressible flow |
| D. | frictionless flow |
| Answer» B. uniform flow | |
| 124. |
_ Which of the following is demensionless$? |
| A. | specific weight |
| B. | specific volume |
| C. | specific speed |
| D. | specific gravity |
| Answer» E. | |
| 125. |
_ Surface tension has the units of$? |
| A. | newtons/m |
| B. | newtons/m |
| C. | new tons/m |
| D. | newtons |
| Answer» D. newtons | |
| 126. |
_ If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its$? |
| A. | specific weight |
| B. | specific mass |
| C. | specific gravity |
| D. | specific density |
| Answer» D. specific density | |
| 127. |
_ Operation of McLeod gauge used for low pressure measurement is based on the principle of$? |
| A. | gas law |
| B. | Boyle’s law |
| C. | Charle’s law |
| D. | Pascal’s law |
| Answer» C. Charle‚Äö√Ñ√¥s law | |
| 128. |
__Metacentre is the point of intersection of__ |
| A. | vertical upward force through e.g. of body and center line of body |
| B. | buoyant force and the center line of body |
| C. | mid point between e.g. and center of buoyancy |
| D. | all of the above |
| Answer» C. mid point between e.g. and center of buoyancy | |
| 129. |
__For very great pressures, viscosity of moss gases and liquids__ |
| A. | remains same |
| B. | increases |
| C. | decreases |
| D. | shows erratic behaviour |
| Answer» E. | |
| 130. |
__A one dimensional flow is one which__ |
| A. | is uniform flow |
| B. | is steady uniform flow |
| C. | takes place in straight lines |
| D. | involves zero transverse component of flow |
| Answer» E. | |
| 131. |
__For hypersonic flow, the Mach number is__ |
| A. | unity |
| B. | greater than unity |
| C. | greater than 2 |
| D. | greater than 4 |
| Answer» E. | |
| 132. |
__The flow in which each liquid particle has a definite path and their paths do not cross each other is called__ |
| A. | one dimensional flow |
| B. | uniform flow |
| C. | turbulent flow |
| D. | streamline flow |
| Answer» E. | |
| 133. |
__The wake__ |
| A. | always occurs before a separation point |
| B. | always occurs after a separation point |
| C. | is a region of high pressure intensity |
| D. | none of the above |
| Answer» C. is a region of high pressure intensity | |
| 134. |
__Newton’s law of viscosity relates__ |
| A. | intensity of pressure and rate of angular deformation |
| B. | shear stress and rate of angular deformation |
| C. | shear stress, viscosity and temperature |
| D. | viscosity and rate of angular deformation |
| Answer» C. shear stress, viscosity and temperature | |
| 135. |
__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 viscosity |
| B. | ratio of inertial force to force due to gravitation |
| 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 |
| Answer» E. | |
| 136. |
__The value of friction factor ‘f’ for smooth pipes for Reynolds number 106 is approximately equal to__ |
| A. | 0.1 |
| B. | 0.01 |
| C. | 0.001 |
| D. | 0.0001 |
| Answer» C. 0.001 | |
| 137. |
_The wake$? |
| A. | always occurs before a separation point |
| B. | always occurs after a separation point |
| C. | is a region of high pressure intensity |
| D. | none of the above |
| Answer» C. is a region of high pressure intensity | |
| 138. |
_Metacentric height for small values of angle of heel is the distance between the$? |
| A. | centre of gravity and centre of buoy-ancy |
| B. | centre of gravity and metacentre |
| C. | centre of buoyancy and metacentre |
| D. | free surface and centre of buoyancy |
| Answer» C. centre of buoyancy and metacentre | |
| 139. |
_The specific weight of water is 1000 kg/m”$? |
| A. | at normal pressure of 760 mm |
| B. | at 4°C temperature |
| C. | at mean sea level |
| D. | all the above |
| Answer» E. | |
| 140. |
_Poise is the unit of$? |
| A. | surface tension |
| B. | capillarity |
| C. | viscosity |
| D. | shear stress in fluids |
| Answer» D. shear stress in fluids | |
| 141. |
_Surface tension$? |
| A. | acts in the plane of the interface normal to any line in the surface |
| B. | is also known as capillarity |
| C. | is a function of the curvature of the interface |
| D. | decreases with fall in temperature |
| Answer» B. is also known as capillarity | |
| 142. |
_The bulk modulus of elasticity$? |
| A. | has the dimensions of 1/pressure |
| B. | increases with pressure |
| C. | is large when fluid is more compressible |
| D. | is independent of pressure and viscosity |
| Answer» C. is large when fluid is more compressible | |
| 143. |
_In a forced vortex motion, the velocity of flow is$? |
| A. | directly proportional to its radial distance from axis of rotation |
| B. | inversely proportional to its radial distance from the axis of rotation |
| C. | inversely proportional to the square of its radial distance from the axis of rotation |
| D. | directly proportional to the square of its radial distance from the axis of rotation |
| Answer» B. inversely proportional to its radial distance from the axis of rotation | |
| 144. |
_If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be$? |
| A. | higher than the surface of liquid |
| B. | the same as the surface of liquid |
| C. | lower than the surface of liquid |
| D. | unpredictable |
| Answer» D. unpredictable | |
| 145. |
_The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to$? |
| A. | 2100 |
| B. | 2700 |
| C. | 10,000 |
| D. | 21,000 |
| Answer» E. | |
| 146. |
_A piece of metal of specific gravity 13.6 is placed in mercury of specific gravity 13.6, what fraction of it volume is under mercury?$? |
| A. | the metal piece will simply float over the mercury |
| B. | the metal piece will be immersed in mercury by half |
| C. | whole of the metal piece will be immersed with its top surface just at mercury level |
| D. | metal piece will sink to the bottom |
| Answer» D. metal piece will sink to the bottom | |
| 147. |
_An ideal flow of any fluid must fulfill the following$? |
| A. | Newton’s law of motion |
| B. | Newton’s law of viscosity |
| C. | Pascal’ law |
| D. | Continuity equation |
| Answer» E. | |
| 148. |
_The fluid forces considered in the Navier Stokes equation are$? |
| A. | gravity, pressure and viscous |
| B. | gravity, pressure and turbulent |
| C. | pressure, viscous and turbulent |
| D. | gravity, viscous and turbulent |
| Answer» B. gravity, pressure and turbulent | |
| 149. |
_When time of closure tc = L/v0 (where L is length of pipe and v0 is speed of pressure wave), the portion of pipe length subjected to maximum head is$? |
| A. | L/4 |
| B. | L/3 |
| C. | L/2 |
| D. | L |
| Answer» B. L/3 | |
| 150. |
_Stanton diagram is a$? |
| A. | log-log plot of friction factor against Reynolds number |
| B. | log-log plot of relative roughness against Reynolds number |
| C. | semi-log plot of friction factor against Reynolds number |
| D. | semi-log plot of friction factor against relative roughness |
| Answer» B. log-log plot of relative roughness against Reynolds number | |