Category: FLUID MECHANICS Questions

a) 0
b) 1
c) 4/3
d) 2
Ans: b

a) pipe diameter
b) throat diameter
c) angle of diverging section
d) both pipe diameter as well as throat diameter
Ans: a

100 TOP FLUID MECHANICS Objective Questions<—– CLICK HERE

96. The correct relationship among displacement thickness d, momentum thickness m and energy thickness e is
a) d > m > e
b) d > e > m
c) e > m > d
d) e > d > m
Ans: d
99. For laminar flow in circular pipes, the Darcy’s friction factor f is equal to
a) 16/Re
b) 32/ Re
c) 64/ Re
d) none of the above where R,, is Reynolds number.
Ans: c
100. Surge wave in a rectangular channel is an example of
i) steady flow
ii) unsteady flow
iii) uniform flow
iv) non-uniform flow
The correct answer is
a) (i) and (iii)
b) (ii) and (iii)
c) (i) and (:v)
d) (ii) and (iv)
Ans: d

a) rise until its weight equals the buoyant force
b) tend to move downward and it may finally sink
c) float
d) none of the above
Ans: b

i) kinetic energy is zero
ii) kinetic energy is 1
iii) momentum is zero
iv) momentum is 1
The correct statements are
a) (i) and (iii)
b) (ii) and (iii)
c) (i) and (iv)
d) (ii) and (iv)
Ans: d

a) 5%
b) 10%
c) 15%
d) 20%
Ans: a