Category: Fluid Mechanics

1. steady flow
2. uniform flow
3. unsteady flow
4. non-uniform flow
The correct answer is?

A. (1) and (2)
B. (1)and(iv)
C. (2) and (3)
D. (2) and (4)

A. The absolute roughness of a pipe de-creases with time
B. A pipe becomes smooth after using for long time
C. The friction factor decreases with time
D. The absolute roughness increases with time

A. 1
B. 4/3
C. 2
D. 4

A. 4 kN/m2
B. 10 kN/m2
C. 12 kN/m2
D. 14 kN/m2

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

A. 0.611
B. 0.707
C. 0.855
D. 1.00

A. 0.611
B. 0.85
C. 0.98
D. 1.00

A. the head loss is same through each pipe
B. the discharge is same through each pipe
C. a trial solution is not necessary
D. the discharge through each pipe is added to obtain total discharge

A. H/3
B. H/2
C. 2 H/5
D. 2 H/3

where H is the available head

A. H1/2
B. H3’2
C. H5/2
D. H5’4 where H is head