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 âfâ 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 onethird 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 seriespipe 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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MCQs: The boundary layer thickness at a distance of l m from the leading edge of a flat plate, kept at zero angle of incidence to the flow direction, is O.l cm. The velocity outside the boundary layer is 25 ml sec. The boundary layer thickness at a distance of 4 m is__________________?
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MCQs: The correct relationship among displacement thickness d, momentum thickness m and energy thickness e is_________________?
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MCQs: Surge wave in a rectangular channel is an example of_________________?
1. steady flow
2. unsteady flow
3. uniform flow
4. nonuniform flow
The correct answer is?
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MCQs: If the elevation of hydraulic grade line at the junction of three pipes is above the elevation of reservoirs B and C and below reservoir A, then the direction of flow will be___________________?
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MCQs: The horse power transmitted through a pipe is maximum when the ratio of loss of head due to friction and total head supplied is________________?
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