A. at the extreme rear of body
B. at the extreme front of body
C. midway between rear and front of body
D. any where between rear and front of body depending upon Reynolds number
Related Mcqs:
- In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are 1.5 cm apart, is_________________?
A. 22.5 m/sec
B. 33 m/sec
C. 40 m/sec
D. 90 m/sec - Separation of flow occurs when_________________?
A. the pressure intensity reaches a minimum
B. the cross-section of a channel is reduced
C. the boundary layer comes to rest
D. all of the above - The depth ‘d’ below the free surface at which the point velocity is equal to the average velocity of flow for a uniform laminar flow with a free surface, will be_________________?
A. 0.423 D
B. 0.577 D
C. 0.223 D
D. 0.707 Dwhere D is the depth of flow
- Stream lines and path lines always coincide in case of__________________?
A. steady flow
B. laminar flow
C. uniform flow
D. turbulent flow - A fluid of kinematic viscosity 0.4 cm2/sec flows through a 8 cm diameter pipe. The maximum velocity for laminar flow will be__________________?
A. less than 1 m/sec
B. 1 m/sec
C. 1.5 m/sec
D. 2 m/sec - For laminar flow in circular pipes, the Darcy’s friction factor f is equal to_________________?
A. 16/Re
B. 32/ Re
C. 64/ Re
D. none of the above where R,, is Reynolds number - The velocity distribution for laminar flow through a circular tube__________________?
A. is constant over the cross-section
B. varies linearly from zero at walls to maximum at centre
C. varies parabolically with maximum at the centre
D. none of the above - The discharge of a liquid of kinematic viscosity 4 cm2/sec through a 8 cm dia-meter pipe is 3200n cm7sec. The type of flow expected is__________________?
A. laminar flow
B. transition flow
C. turbulent flow
D. not predictable from the given data - For hydro-dynamically smooth boundary, the friction coefficient for turbulent flow is_______________?
A. constant
B. dependent only on Reynolds number
C. a function of Reynolds number and relative roughness
D. dependent on relative roughness only - If x is the distance from leading edge, then the boundary layer thickness in laminar flow varies as________________?
A. x
B. x
C. x
D. x/7
