641. Nominal Pipe Size (NPS) of a pipe less than 12 inches in diameter indicates its________________?
A. Inner diameter
B. Outer diameter
C. Thickness
D. Neither inner nor outer diameter

642. Capillary tube method of viscosity measurement is based on the ________________?
A. Hagen-Poiseuille’s equation
B. Stoke’s law
C. Navier-stokes equation
D. None of these

643. In the low Reynolds number region, the drag force on a sphere is proportional to_______________?
A. V
B. V2
C. V4
D. V0.5

644. What is the ratio of the velocity at the axis of the pipe to the mean velocity of flow in case of pipe flow under viscous condition ?
A. 0.5
B. 0.67
C. 1
D. 2

645. Turbine impeller____________________?
B. Produces only tangential current
C. Is effective over wide range of viscosities
D. Does not produce tangential current

646. One dimensional fluid flow implies the ________________________?
A. Flow in straight lines only
B. Uniform flow
D. Flow in which transverse components are zero

647. For laminar flow through a closed conduit____________________?
A. Vmax = 2Vav
B. Vmax = Vav
C. Vmax = 1.5Vav
D. Vmax = 0.5Vav

648. Each term in Bernoulli‟s equation represents the _____________ of the fluid?
A. Energy per unit mass
B. Energy per unit weight
C. Force per unit mass
D. None of these

649. For liquid flow through a packed bed, the superficial velocity as compared to average velocity through the channel in the bed is________________?
A. More
B. Less
C. Equal
D. Independent of porosity

650. The equivalent diameter for pressure drop calculation for a fluid flowing through a rectangular cross-section channels having sides ‘x’ & ‘y’ is given by_________________?%MCEPASTEBIN%
A. 2xy/(x + y)
B. xy/(x + y)
C. (x + y)/2xy
D. (x + y)/xy

651. The nominal size of a hose pipe is specified by its _________________?
A. I.D.
B. O.D.
C. Thickness
D. None of these

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