This set of Fluid Mechanics Multiple Choice Questions & Answers (MCQs) focuses on “Pipe Network”.
1. What is the aim of pipe network analysis?
a) To determine the mass of fluid
b) To determine the volume of fluid
c) To determine the flow rates and pressure drops
d) To determine the cross sections of the pipe
View Answer
Explanation: Pipe analysis is an analysis that is carried out in various aspects. It mainly concentrates on the fluid through a hydraulics network. Hydraulic networks are networks that contain several interconnected branches. The aim is to determine pressure drops and fluid flow rates.
2. The steady- state flow must satisfy ___________
a) Kirchhoff’s law
b) Newtons law
c) Rutherford’s experiment
d) Kepler’s law
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Explanation: The steady state flow must satisfy Kirchhoff’s first and second law. First law states that the total flow into the junction equals the total flow away from the junction. Second law is called the law of conservation of mass. It states that between two junctions, the head loss is independent of the path followed.
3. What are the assumptions made for a fluid flow through a pipe?
a) Fluid inertia is not taken
b) Viscosity is not taken
c) Volume is not considered
d) Mass is not considered
View Answer
Explanation: During a fluid flow through a pipe, there are various design considerations. But, the two major assumptions are that the flow is assumed to be fully developed. Also, fluid inertia is not taken into account.
4. Which among the following is not global parameters of fluid?
a) Viscosity
b) External diameter
c) Density
d) Mass flow rate
View Answer
Explanation: External diameter is not a global parameter. It is one of the most essential pipelining parameters. It helps in determining the type of pipe and material to be used for the same.
5. What is the default value of pipe length?
a) 5 meters
b) 20 meters
c) 10 meters
d) 30 meters
View Answer
Explanation: Pipe analysis is carried out in various aspects. It mainly concentrates on the fluid through a hydraulics network. After the analysis, they have determined the default length of the pipe as 5 meters.
6. What is the best suitable type of pipe?
a) Hard
b) Rigid
c) Tough
d) Malleable
View Answer
Explanation: The best suitable parameter to determine the pipe is either rigidity or flexibility. If we set it with rigidity, the compliance of the walls are not taken into account. Flexibility is preferred for metal pipes and hoses.
7. What is the default value of specific heat ratio in pipelines?
a) 1
b) 1.2
c) 1.4
d) 2
View Answer
Explanation: Pipe analysis is carried out in various aspects. It mainly concentrates on the fluid through a hydraulics network. Specific heat ratio is the ratio of heat to the constant volume chamber block. It has got a default value of 1.4.
8. Where is the surge tank located in a hydroelectric power plant?
a) Dam
b) Head race
c) Tail race
d) Turbine
View Answer
Explanation: In a hydroelectric power plant, the surge tank is located close to the power station. It is mainly close to the ground to reduce the light. The surge tank in medium and high head turbines are located at the inlet of the turbine.
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