Fluid Mechanics Mcqs


Q.  The distance y from pipe boundary, at which the point velocity is equal to average velocity for turbulent flow, is________________?

a. 0.223 R
b. 0.423 R
c. 0.577 R
d. 0.707 R


ANSWER: See Answer
 
where R is radius of pipe
MCQs:  A closed tank containing water is moving in a horizontal direction along a straight line at a constant speed. The tank also contains a steel ball and a bubble of air. If the tank is decelerated horizontally, then________________? 1. the ball will move to the front 2. the bubble will move to the front 3. the ball will move to the rear 4. the bubble will move to the rear Find out which of the above statements are correct ?
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MCQs:  Which of the following is an incorrect statement_______?
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MCQs:  A right circular cylinder open at the top is filled with liquid and rotated about its vertical axis at such a speed that half the liquid spills out, then the pressure intensity at the center of bottom is___________________?
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MCQs:  When a liquid rotates at a constant angular velocity about a vertical axis as a rigid body, the pressure intensity varies________________?
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MCQs:  The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as__________________?
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MCQs:  The increase in meta centric height_________________? 1. increases stability 2. decreases stability 3. increases comfort for passengers 4. decreases comfort for passengers The correct answer is?
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MCQs:  If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will________________?
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MCQs:  A floating body is said to be in a state of stable equilibrium_________________?
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MCQs:  A vertical rectangular plane surface is submerged in water such that its top and bottom surfaces are 1.5 m and 6.0 m res-pectively below the free surface. The position of center of pressure below the free surface will be at a distance of________________?
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MCQs:  The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is______________?
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MCQs:  Newton’s law of viscosity relates________________?
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MCQs:  The viscosity of a gas_______________?
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MCQs:  If the dynamic viscosity of a fluid is 0.5 poise and specific gravity is 0.5, then the kinematic viscosity of that fluid in stokes is__________________?
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MCQs:  An ideal fluid is_______________?
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MCQs:  Pascal-second is the unit of______________?
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MCQs:  The unit of kinematic viscosity is_______________?
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MCQs:  Select the correct statement_.?
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MCQs:  The hourly variation factor is usually taken as______________?
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MCQs:  The distribution mains are designed for________________?
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MCQs:  The depression of water table in a well due to pumping will be maximum_______________?
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