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Ques: If the velocity distribution over a plate is given by u = 2/3 y – y2 which v is the velocity in m/s at a distance y meter above the plate. The value of shear stress at y = 0 and y = 0.15m.
Take dynamic viscosity of fluid as 8.63 poise. 
a)0.316 N/m2
b)0.212 N/m2
c)0.467 N/m2
d)0.593 N/m2


Solution:

MCQ: FLUID MECHANICS AND MACHINERY, GATE

MCQ: FLUID MECHANICS AND MACHINERY, GATE


Answer is a) 0.316 N/m^2

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FAQs on MCQ: FLUID MECHANICS AND MACHINERY, GATE

1. What is fluid mechanics?
Ans. Fluid mechanics is the branch of physics that deals with the study of fluids, including both liquids and gases, and the forces acting upon them. It involves the study of fluid properties, fluid behavior under various conditions, and the principles governing the motion of fluids.
2. What are the basic properties of fluids?
Ans. The basic properties of fluids include density, viscosity, pressure, and temperature. Density is the mass per unit volume of a fluid, viscosity is the measure of a fluid's resistance to flow, pressure is the force exerted by the fluid per unit area, and temperature determines the thermal properties of a fluid.
3. What are the different types of fluid flow?
Ans. Fluid flow can be categorized into three main types: laminar flow, turbulent flow, and transitional flow. Laminar flow refers to a smooth and orderly flow pattern with parallel streamlines, turbulent flow is characterized by irregular and chaotic flow with eddies and vortices, and transitional flow is a combination of laminar and turbulent flow.
4. What are some common applications of fluid mechanics?
Ans. Fluid mechanics finds numerous applications in various fields. Some common applications include the design of pumps, turbines, and other machinery, analysis of fluid flow in pipes and channels, aerodynamics of aircraft and vehicles, understanding the behavior of oceans and atmosphere, and the design of hydraulic systems for industrial processes.
5. What is the importance of fluid machinery in engineering?
Ans. Fluid machinery plays a crucial role in various engineering applications, such as power generation, transportation, and industrial processes. It involves the design and operation of machinery like pumps, turbines, compressors, and fans, which are used to convert energy from fluids into mechanical work or vice versa. Understanding fluid mechanics is essential for efficient and reliable operation of these machines.
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