Test: Hydraulics & Fluid Mechanics - 6 - Civil Engineering (CE) MCQ
25 Questions MCQ Test - Test: Hydraulics & Fluid Mechanics - 6
The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of the orifice)
The siphon will work satisfactorily, if the minimum pressure in the pipe is __________ vapour pressure of liquid.
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The difference between the notch and weir is that the notch is of bigger size and the weir is of a smaller size.
An open tank containing liquid is moving with an acceleration on an inclined plane. The inclination of the free surface of the liquid will be __________ to the acceleration of the tank.
Euler's number is the ratio of __________ force to pressure force.
The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to
The ratio of velocity of fluid in an undisturbed stream to the velocity of sound wave is known as Mach number.
The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly contracted to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden contraction, assuming coefficient of contraction as 0.62, is
All the gases are considered to have compressible flow and all the liquids are considered to have incompressible flow.
When a cylindrical vessel containing liquid is revolved, the surface of the liquid takes the shape of
The hydraulic mean depth or the hydraulic radius is the ratio of
The imaginary line drawn in the fluid in such a way that the tangent to any point gives the direction of motion at that point, is known as
A hemispherical tank of radius (R) has an orifice of cross-sectional area (a) at its bottom and is full of liquid. The time required to empty the tank completely is
When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called
When a body is placed over a liquid, it will sink down if
When a cylindrical vessel of radius (r) containing liquid is revolved about its vertical axis ω rad/s, then depth of parabola which the liquid assumes is
A flow whose streamline is represented by a curve, is called
When the Mach number is less than unity, the flow is called
When the end contractions of the weir are suppressed, then number of end contractions (n) are taken as zero
A flow is called hyper-sonic, if the Mach number is
The power absorbed (in watts) in overcoming the viscous resistance of a footstep bearing is
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