Q.1
For a body floating in a liquid the normal pressure exerted by the liquid acts at
Q.2
All the terms of energy in Bernoulli’s equation have dimension of
Q.3
The depth ‘d’ below the free surface at which the point velocity is equal to the average velocity of flow for a uniform laminar flow with a free surface, will be (where D is the depth of flow)
Q.4
For hypersonic flow, the Mach number is
Q.5
Metacentric height is the distance between the metacentre and
Q.6
The correct relationship among displacement thickness d, momentum thickness m and energy thickness e is
Q.7
The velocity distribution for laminar flow through a circular tube
Q.8
In the case of steady flow of a fluid, the acceleration of any fluid particle is
Q.9
Ratio of inertia force to elastic force is known as
Q.10
The major loss of energy in long pipes is due to
Q.11
Property of a fluid by which molecules of different kinds of fluids are attracted to each other is called
Q.12
The flow in which each liquid particle has a definite path and their paths do not cross each other is called
Q.13
If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be
Q.14
A streamline is defined as the line
Q.15
The two important forces for a floating body are
Q.16
The conditions for the stable equilibrium of a floating body are
Q.17
Coefficient of contraction for an external cylindrical mouthpiece is
Q.18
Surface energy per unit area of a surface is numerically equal to
Q.19
For very great pressures, viscosity of moss gases and liquids
Q.20
Which of the following manometer has highest sensitivity
Q.21
A one dimensional flow is one which
Q.22
The upper surface of a weir over which water flows is known is
Q.23
Newton’s law of viscosity is a relationship between
Q.24
Mercury is often used in barometer because
Q.25
For a floating body to be in equilibrium
Q.26
Specific weight of sea water is more that of pure water because it contains
Q.27
The ratio of average velocity to maximum velocity for steady laminar flow in circular pipes is
Q.28
A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm² and a volume of 0.039 m3 at 150 kg/cm². The bulk modulus of elasticity of liquid is
Q.29
Alcohol is used in manometers because
Q.30
At the centre line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be
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