An approximately _____________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section ?

Related Mcqs:

1. The pressure drop per unit length for laminar flow of fluid through a long pipe is proportional to (where, A = cross-sectional area of the pipe & D = Diameter of the pipe) ?

   A. A
   B. D
   C. 1/A
   D. 1/A2

2. Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the___________________?

   A. Length of the pipe
   B. Diameter of the pipe
   C. Density of the fluid
   D. Velocity of the fluid

3. The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be_______________?

   A. Parabolic
   B. Hyperbolic
   C. Straight line
   D. None of these

4. An example of unsteady non uniform flow is the flow of liquid under pressure through a__________________?

   A. Tapering pipe at constant flow rate
   B. Tapering pipe at either decreasing or increasing flow rate
   C. Long pipeline of constant diameter
   D. None of these

5. Velocity of a gas in sound is not proportional to (where, T = Absolute temperature of the gas. P = Absolute pressure of the gas. y = Ratio of specific heats (Cp/Cv) ρ = specific weight of the gas) ?

   A. √T
   B. 1/√P
   C. √y
   D. 1/√ρ

6. Reynolds number of a fluid flowing in a circular pipe is 10,000. What will be the Reynolds number when the fluid velocity is decreased by 30% & the pipe diameter is increased by 30% ?

   A. 9,100
   B. 13,000
   C. 7,000
   D. 2,550

7. Uniform ramming of sand in green sand moulding process leads to____________________?

   A. Reduced chance of gas porosity
   B. Greater dimensional stability of the casting
   C. Uniform flow of molten metal into the mould cavity
   D. Less sand expansion type of casting defect

8. Friction factor for fluid flow in pipe does not depend upon the________________?

   A. Pipe length
   B. Pipe roughness
   C. Fluid density & viscosity
   D. Mass flow rate of fluid

9. The friction factor for the turbulent fluid flow in a rough pipe does not depend upon the_________________?

   A. Pipe roughness & pipe diameter
   B. Fluid velocity
   C. Type of flowing fluid
   D. Both B. & C.

10. Venturimeter is used to measure the flow rate of fluids in pipes, when the pipe is in ______________ position ?

    A. Horizontal
    B. Vertical
    C. Inclined
    D. Any