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.Management Sciences
Category: Fluid Mechanics for Chemical
Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton’s law of viscosity. (II) Newton’s second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to boundary. (V) Fluid cannot penetrate a boundary?
A. I, II, III
B. II, III, V
C. I, II, V
D. II, IV, V
With increase in pump speed, its NPSH requirement_________________?
A. Decreases
B. Increases
C. Remains unaltered
D. Can either increase or decrease; depends on other factors
Which of the following is an undesirable property of a manometric liquid ?
A. Non-sticky & non-corrosive nature
B. High vapour pressure
C. Low viscosity & surface tension
D. Low co-efficient of thermal expansion
The simple Pitot tube does not measure the________________?
A. Static pressure
B. Dynamic pressure
C. Velocity at the stagnation point
D. All A., B. and C.
Euler’s equation of motion states, that at every point, the_________________?
A. Fluid momentum is constant
B. Force per unit mass equals acceleration
C. Rate of mass outflow is equal to the rate of mass inflow
D. None of these
In magnetic flow meters, voltage generation is________________?
A. Due to the motion of conducting fluid through an externally generated uniform field
B. Proportional to the fluid velocity
C. Both A. and B.
D. Neither A. nor B.
Sewage sludge is an example of the ______________ fluid?
A. Bingham plastic
B. Newtonian
C. Pseudo plastic
D. Dilatent
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