TOPIC 3: DIFFERENTIATE HYDROLOGY, HYDRAULICS AND FLUID MECHANICS 10 MULTIPLE CHOICE QUESTIONS 1. Hydraulics are used to study fluids at a) water tank b) pond c) river d) lake Answer: C Explaination: the definition of hydraulics is the study of flow and conveyance of fluid which means the fluids that are moving. 2. How are hydraulics and hydrology are related? a) both study abt fluid b) both are sub topics in civil engineering c) both works together to design a storm water management system d) hydraulics study abt water cycle to help hydrology to design a structure Answer: C Explaination: hydrology studies abt water cycle which can estimate the amount of rain in a place. Then hydraulic will use the data to design a suitable storm water management system tolet the water flow wasily and prevent the place from flooding. 3. On what does the Quantity of water available at selected site depends? a) Temperature at the selected site b) Humidity at selected site c) Vegetation of the area d) Hydrological cycle of area Answer: D Explanation: the quantity of water available at the selected site depends upon the hydrological cycle of nature. The quantity of water available can be determined from the study of rainfall and run off in the area 4. What are used to store water during peak periods? a) Storage drums b) Canals c) Sews d) Storage reservoirs Answer: D Explanation: the capacity of the hydraulic plant is done on the basis of minimum quantity available. Usually storage reservoirs are constructed for such plants in order to store the water during peak periods of runoff and supply the same during off peak periods of runoff. 5. The evaporation of water from the surfaces and its precipitation is known as a) Science b) Infiltration c) Hydrological cycle d) Vegetation Answer: C Explanation: it’s the science which deals with rainfall and runoff. The evaporation of the water from the surfaces of river and oceans and its precipitation on the earth is known as hydrological cycle. The happens in a particular amount of period. 6. The specific gravity of a liquid has a) The same unit as that of mass density b) The same unit as that of weight density c) The same unit as that of specific volume d) No unit Answer: D Explanation: The specific gravity of a liquid is the ratio of two similar quantities which make it unitless. 7. If a person studies about a fluid which is at rest, what will you call his domain of study? a) Fluid mechanics b) Fluid statics c) Fluid kinematics d) Fluid dynamics Answer: B Explanation: Fluid Mechanics deals with the study of fluid at rest or in motion with or without the consideration of forces, Fluid Statics is the study of fluid at rest, Fluid Kinematics is the study of fluid in motion without consideration of forces and Fluid Dynamics is the study of fluid in motion considering the application forces. 8. The value of the viscosity of an ideal fluid is a) Zero b) Unity c) Infinity d) More than that of a real fluid Answer: A Explanation: Ideal fluids are non-viscous which means they will have zero viscosity 9. The study of the behaviour or properties of fluid is called what? a) Hydraulics b) Fluid Mechanics c) Hydroloics d) Hydrolysis Answer: B Explanation: Fluid Mechanics is the study of fluid behaviour at rest and in motion 10. Designing water pipelines is an example of the applications of a) Fluid Mechanics b) Hydraulics c) Hydrology Answer: A Explanation: Fluid mechanics is the study of behaviour of fluid at rest or in motion. To design a water pipeline, a stronger knowledge of fluid mechanics is very important so that the pipe can be designed such as its thickness and roughness coefficient (economically) according to the behaviour of the water studied to make sure that the pipe can sustains the flow or pressure of water efficiently and can be long lasting.
