A. Decreases due to reduced viscosity
B. Decreases due to reduced vapour pressure
C. Increases due to increased vapour pressure
D. Decreases due to increased frictional resistance
A. Less than atmospheric pressure
B. More than liquid vapor pressure
C. Less than liquid vapor pressure
D. More than atmospheric pressure
A. Electromagnetic pump
B. Centrifugal pump
C. Reciprocating pump
D. Gear pump
A. Discharge of water by a centrifugal pump being run at a constant rpm
B. Water flow in the suction and discharge pipe of a reciprocating pump
C. Water discharge from a vertical vessel in which constant level is maintained
D. Low velocity flow of a highly viscous liquid through a hydraulically smooth pipe
A. Affected by the fluid flow pressure
B. Constant
C. Affected by the presence of a solid boundary
D. All A., B. and C.
A. 1
B. 0
C. < 1
D. > 1
A. 0.003
B. 0.01
C. 0.1
D. 0.3
A. Rough and smooth pipes have the same friction factor
B. Laminar film covers the roughness projections
C. Friction factor depends upon NRe only
D. Friction factor is independent of the relative roughness
A. 2000
B. 10
C. 100
D. 1000
A. Dependent on Reynolds number
B. Independent of Reynolds number
C. Dependent on the length of the pipe
D. None of these