A. 1.5
B. 1
C. 0
D. 5
Related Mcqs:
- 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 - Mach number is defined as the ratio of the local flow velocity to the sonic velocity in the fluid. For what value of Mach number, the gases are considered incompressible ?
A. < 0.3
B. > 3
C. 50
D. 1 - Upto what value of ‘Mach number’, a fluid may be considered as incompressible ?
A. 0.03
B. 0.3
C. 3
D. 10 - In an incompressible flow of fluid, the fluid ________________?
A. Temperature remains constant
B. Compressibility is greater than zero
C. Density does not change with pressure & temperature
D. Is frictionless - The Mach number for hypersonic flow of compressible fluid is____________________?
A. 1
B. > 1
C. > 4
D. < 2 - In case of supersonic flow of a fluid through pipeline, the ‘Mach number’ is__________________?
A. 0
B. 1
C. < 1
D. > 1 - Mach number is important in a fluid flow problem, when the inertia and _____________ forces predominate?
A. Elastic
B. Viscous
C. Gravity
D. None of these - For an incompressible fluid, the bulk modulus of elasticity is____________________?
A. 5 kg/m3
B. ∞ N/m2
C. 1 N
D. 0 N/m - In a fully turbulent flow (Re > 105) in a pipe of diameter ‘d’, for a constant pressure gradient, the dependence of volumetric flow rate of an incompressible fluid is_______________?
A. d
B. d2
C. d2.5
D. d4 - In an incompressible fluid, the density is____________________?
A. Greatly affected by moderate changes in pressure
B. Greatly affected only by moderate changes in temperature
C. Not affected with moderate change in temperature & pressure
D. Sensible to changes in both temperature & pressure
