Principles of Similarity
Q1. Choose the correct answer
(i)
If there are n physical quantities and m fundamental dimensions describing a
particular process, the number of independent non-dimensional parameters
describing the process is
(a) m n
(b) n m
(c)

Introduction and Fundamental Concepts
Q1. Choose the correct answer
(i)
A fluid is a substance that
(a) is practically incompressible
(b) always expands until it fills any container
(c) obeys Newtons law of viscosity
(d) cannot remain at rest under action

Fluid Flow Applications
Q1. Choose the correct answer
(i)
Bernoullis equation relates
(a) various forms of mechanical energy
(b) various forces involved in fluid flow
(c) torque to change in angular momentum
(d) various forces with change in momentum
(ii)

Application of Viscous Flow through Pipes
Q1. Choose the correct answer
(i)
For pipes arranged in series
(a) the flow may be different in different pipes
(b) the head loss per unit length must be more in a larger pipe
(c) the head loss must be the same in

Introduction to Turbulent Flow
Q1. Choose the correct answer
u v
(i)
0 for a turbulent flow signifies
x x
(a) conservation bulk momentum transport
(b) increase in u in the positive x direction will be followed by increase in v in
negative y direction
(c)

A Few unsteady Flow Phenomena
Q1. Choose the correct answer
(i)
Unsteady form of Bernoullis equation is given by
p
V2
p
V2
(a) 1 1 g z 1 2 2 g z 2
2
2
2
2
p
V
p
V2
V
(b) 1 1 g z 1 2 2 g z 2
dt
2
2
s
1
(c)
(d)
(ii)
p1
V2
p
V2
1 z1 2 2 z 2
g 2g
g 2g
p1

Introduction to Laminar Boundary Layer
Q1. Choose the correct answer
(i)
If x is the distance measured from the leading edge of a flat plate, the laminar
boundary layer thickness varies as
(a) x
(b) x1 2
(c) x 1 2
(d) x 4 5
[Ans.(b)]
(ii)
(iii)
in the ent

Conservation Equations in Fluid Flow
Q1. Choose the correct answer
(i)
Mathematical statement of Reynolds transport theorem is given by
dN
(a)
V . dA d
C
dt system t CS
dN
(b)
V .dA d
C
dt system t CS
dN
(c)
d V . dA
CS
dt system t CV
dN
(d)

Incompressible Viscous Flows
Q1. Choose the correct answer
(i)
The maximum velocity of a one-dimensional incompressible fully developed
viscous flow between two fixed parallel plates is 6m/s. The mean velocity of the
flow is
(a) 2 m/s
(b) 3 m/s
(c) 4 m/s

Flows with a Free Surface
Q1. Choose the correct answer
(i)
Which one of the following statements is appropriate for the free surface, the
hydraulic gradient line and energy gradient line in an open channel flow?
(a) Parallel to each other but they are di

Flow of Ideal Fluids
Q1.
(i)
(ii)
(iii)
(iv)
(v)
If for a flow a stream function exists and satisfies the Laplace equation, then
which of the following is the correct statement?
(a) The flow is rotational
(b)The flow is irrotational and incompressible
(c)

Fluid Statics
Q1. Choose the correct answer
(i)
The normal stress is the same in all directions at a point in a fluid
(a) only when the fluid is frictionless
(b) only when the fluid is frictionless and incompressible
(c) only when the fluid is incompressi

Conservation Equations in Fluid Flow
Q1. Choose the correct answer
(i)
The continuity equation is the result of application of the following law to the
flow field
(a) Conservation of momentum
(b) Conservation of energy
(c) Conservation of mass
(d) Conserv