Hydraulics And Fluid Mechanics In Me - Study Mode

[#671] An open tank containing liquid is made to move from rest with a uniform acceleration. The angle 0 which the free surface of liquid makes with the horizontal is such that (where a = Horizontal acceleration of the tank and g = Acceleration due to gravity)
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(A) $$ an heta = frac{{ ext{a}}}{{ ext{g}}}$$

[#672] The resultant upward pressure of a fluid on a floating body is equal to the weight of the fluid displaced by the body. This definition is according to
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(C) Archimede's principle

[#673] The discharge through a channel of trapezoidal section is maximum when
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(C) The sloping side is equal to half the width at the top

[#674] Coefficient of contraction is the ratio of
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(D) Area of jet at vena contracta to the area of orifice

[#675] The most efficient section of a channel is
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(D) Trapezoidal