A. 0.223 R
B. 0.423 R
C. 0.577 R
D. 0.707 R
where R is radius of pipe
A. a circular disc of plate held normal to flow
B. a sphere
C. a cylinder
D. a streamlined body
A. constant
B. dependent only on Reynolds number
C. a function of Reynolds number and relative roughness
D. dependent on relative roughness only
A. directly proportional to Reynolds number and independent of pipe wall roughness
B. directly proportional to pipe wall roughness and independent of Reynolds number
C. inversely proportional to Reynolds number and indpendent of pipe wall roughness
D. inversely proportional to Reynolds number and directly proportional to pipe wall roughness
A. 1/2
B. 2/3
C. 3/2
D. 2
A. laminar flow
B. transition flow
C. turbulent flow
D. not predictable from the given data
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
A. laminar flow
B. transition flow
C. turbulent flow
D. critical flow
A. 0
B. r/2
C. r
D. 2r
A. head loss and discharge are same in two systems
B. length of pipe and discharge are same in two systems
C. friction factor and length are same in two systems
D. length and diameter are same in two systems