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
Related Mcqs:
- 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 - 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 - Which of the following assumptions enables the Euler’s equation of motion to be integrated ?
A. The fluid is incompressible
B. The fluid is non-viscous
C. The continuity equation is satisfied
D. The flow is rotational and incompressible - Euler’s equation of motion is a statement expressing____________________?
A. Conservation of mass
B. Conservation of energy
C. Newton’s first law of motion
D. Newton’s second law of motion - The equation relating friction factor to Reynold number, f-0.5 = 4 loge (NRe/√f)-0.4, is called the _____________ equation?
A. Nikuradse
B. Von-Karman
C. Blasius
D. Colebrook - Colebrook equation for friction factor in turbulent flow is given by, f-0.5 = -4 loge [(ε/D) + (1.26/NRe √F). It reduces to Nikuradse equation for a value of (ϵ/D) equal to __________________?
A. 0
B. 1
C. ∞
D. 0.5 - Bernoulli’s equation for fluid flow is derived following certain assumptions. Out of the assumptions listed below, which set of assumptions is used in derivation of Bernoulli’s equation? A. Fluid flow is frictionless & irrotational. B. Fluid flow is steady. C. Fluid flow is uniform & turbulent. D. Fluid is compressible. E. Fluid is incompressible ?
A. A, C, D
B. B, D, E
C. A, B, E
D. A, D, E - Bernoulli’s equation for steady, frictionless, continuous flow states that the ______________ at all sections is same?
A. Total pressure
B. Total energy
C. Velocity head
D. None of these - The continuity equation in ideal fluid flow states that__________________?
A. Net rate of inflow into any small volume must be zero
B. Energy is not constant along a streamline
C. Energy is constant along a streamline
D. There exists a velocity potential - The frictional resistance in laminar flow does not depend on the_________________?
A. Area of surface in contact
B. Flow velocity
C. Fluid temperature
D. Pressure of flow
