Fluid Mechanics Mcqs

Q.  The total pressure on a plane surface inclined at an angle 9 with the horizontal is equal to_______________?

a. PA
b. pA sin 9
c. pA cos 9
d. pA tan 9


ANSWER: See Answer
 
where p is pressure intensity at centroid of area and A is area of plane surface
MCQs:  Which of the following statements is correct___?
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MCQs:  The shear stress distribution for a fluid flowing in between the parallel plates, both at rest, is_______________?
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MCQs:  The boundary layer thickness in turbulent flow varies as______________?
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MCQs:  Ay between two stream lines represents________________?
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MCQs:  Stanton diagram is a______________?
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MCQs:  When an ideal fluid flows past a sphere________________?
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MCQs:  In which of the following the friction drag is generally larger than pressure drag?
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MCQs:  The value of friction factor ‘f’ for smooth pipes for Reynolds number 106 is approximately equal to________________?
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MCQs:  Separation of flow occurs when_________________?
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MCQs:  The distance from pipe boundary, at which the turbulent shear stress is one-third die wall shear stress, is_______________?
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MCQs:  The Prartdtl mixing length is_________________?
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MCQs:  A fluid of kinematic viscosity 0.4 cm2/sec flows through a 8 cm diameter pipe. The maximum velocity for laminar flow will be__________________?
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MCQs:  The wake_______________?
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MCQs:  The hydraulic grade line is_________________?
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MCQs:  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________________?
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MCQs:  In series-pipe problems_______________?
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MCQs:  A valve is suddenly closed in a water main in wl.ich the velocity is 1 m/sec and velocity of pressure wave is 981 m/ sec. The inertia head at the valve will be________________?
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MCQs:  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__________________?
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MCQs:  The length of a pipe is 1 km and its diameter is 20 cm. If the diameter of an equivalent pipe is 40 cm, then its length is_____________________?
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MCQs:  Two pipes of same length and diameters d and 2d respectively are connected in series. The diameter of an equivalent pipe of same length is________________?
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