Fluid Mechanics Sheet 14
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1) Question.
A Francis turbine under a head of 25 m produces 2000 K W at a speed of 250 rpm. Its specific speed is -
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2) Question.
At a rated capacity of 44 cumecs, a centrifugal pump develops 36 m of head when operating at 1450 rpm. Its specific speed is -
Answer. -
3) Question.
Water turbines may be put in the decreasing order of specific speeds as -
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4) Question.
In which of the following situations, the inertia force would be unimportant ?
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5) Question.
A ship's model of scale 1:100 had a wave resistance of 1 kg at its design speed. The corresponding wave resistance in prototype will be -
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6) Question.
In which of the following situations, the viscous force is unimportant ?
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7) Question.
In a 1:100 scale model of a harbour, the time which will correspond to the prototype tidal period of 12 hours will be -
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8) Question.
An open tank contains 1 m deep water with 50 cm depth of oil of specific gravity 0.8 above it. The intensity of pressure at the bottom of tank will be
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9) Question.
If the physical quantities involved in a fluid flow phenomenon are discharge Q, diameter D, accelaration due to gravity g, dynamic viscosity and density , then the number of parameters needed to express the function F (Q,D, g, ,) = 0 are -
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10) Question.
Which of the following Froude number range indicates a weak jump ?
Answer.
