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.Management Sciences
Category: Fluid Mechanics for Chemical
The capillary rise of mercury is maximum in glass tube of dia _____________ mm?
A. 0.5
B. 1
C. 2
D. 5
A streamline is_________________?
A. The line connecting the mid-points of flow cross-sections
B. Defined for uniform flow only
C. Drawn normal to the velocity vector at every point
D. Always the path of a particle
Quicksand is an example of a __________ fluid?
A. Bingham plastic
B. Dilatant
C. Newtonian
D. Pseudo plastic
For steady ideal fluid flow, the Bernoulli’s equation states that the_________________?
A. Velocity is constant along a stream line
B. Energy is constant throughout the fluid
C. Energy is constant along a stream line, but may vary across stream lines
D. None of these
Cavitation occurs in a centrifugal pump when the suction pressure is________________?
A. Less than the vapour pressure of the liquid at that temperature
B. Greater than the vapour pressure of the liquid at that temperature
C. Equal to the vapour pressure
D. Equal to the developed head
The effect of solid boundary on the fluid flow is confined to the boundary layer, except for fluids ?
A. Having high viscosities
B. Moving at low velocities
C. Both A. & B.
D. Neither A. nor B.
Discharge in laminar flow through a pipe varies________________?
A. As the square of the radius
B. Inversely as the pressure drop
C. Inversely as the viscosity
D. As the square of the diameter
The length of the tube necessary for the boundary layer to reach the centre of the tube and for fully developed flow to be established is called the _____________ length?
A. Equivalent
B. Transition
C. Prandtl mixing
D. None of these
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