Q.1
Bulk modulus of a fluid __________ as the pressure increases.
Q.2
When a cylindrical vessel of radius (r) containing liquid is revolved about its vertical axis ω rad/s, then depth of parabola which the liquid assumes is
Q.3
The body will sink down if the force of buoyancy is __________ the weight of the liquid displaced.
Q.4
The siphon will work satisfactorily, if the minimum pressure in the pipe is __________ vapour pressure of liquid.
Q.5
When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called
Q.6
The body will float if the force of buoyancy is __________ the weight of the liquid displaced.
Q.7
The total pressure on an immersed surface inclined at an angle θ with the liquid surface is
Q.8
The liquid used in manometers should have
Q.9
Working principle of dead weight pressure gauge tester is based on
Q.10
The stress-strain relation of the Newtonian fluid is
Q.11
For pipes, laminar flow occurs when Reynolds number is
Q.12
Stoke is the unit of
Q.13
The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to
Q.14
For pipes, turbulent flow occurs when Reynolds number is
Q.15
The velocity corresponding to Reynold number of 2800, is called
Q.16
Head developed by a centrifugal pump depends on
Q.17
If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.2 kg/cm", the pressure at a depth of 50 m below the oil surface will be
Q.18
The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm". The pressure at 2.5 m below the oil surface will be
Q.19
Mach number is significant in
Q.20
A piece of metal of specific gravity 13.6 is placed in mercury of specific gravity 13.6, what fraction of it volume is under mercury?
Q.21
A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury?
Q.22
The power transmitted through a pipe is (where w = Specific weight in N/m3, and Q = Discharge in m3/s)
Q.23
In a single casing, multistage pump running at constant speed, the capacity rating is to be slightly lowered. It can be done by
Q.24
The value of bulk modulus of a fluid is required to determine
Q.25
The specific gravity of an oil whose specific weight is 7.85 kN/m3, is
Q.26
Slip of a reciprocating pump is defined as the
Q.27
Kinematic viscosity is dependent upon
Q.28
Slip of a reciprocating pump is negative, when
Q.29
Reynolds number is significant in
Q.30
Two pipe systems can be said to be equivalent, when the following quantities are same
Q.31
Capillary action is due to the
Q.32
For manometer, a better liquid combination is one having
Q.33
Froude number is significant in
Q.34
At the center line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be
Q.35
If the ratio's of the corresponding forces acting at corresponding points are equal, then the model and the prototype are said to have.
Q.36
The discharge through a reaction turbine with increase in unit speed
Q.37
High specific speed of turbine implies it is
Q.38
Reaction turbines are used for
Q.39
The function of guide vanes in a reaction turbine is to
Q.40
The discharge through a siphon spillway is
Q.41
A thick liquid like syrup has a __________ viscosity than a light liquid like water.
Q.42
The specific speed of a centrifugal pump, delivering 750 liters of water per second against a head of 15 meters at 725 r.p.m., is
Q.43
Which of the following pump is preferred for flood control and irrigation applications?
Q.44
Viscous force is the __________ of shear stress due to viscosity and cross-section area of flow.
Q.45
Bernoulli's equation is applied to
Q.46
In a static fluid
Q.47
The discharge over a rectangular notch is (where b = Width of notch, and H = Height of liquid, above the sill of the notch)
Q.48
The unit of kinematic viscosity in S. I. units is
Q.49
Center of pressure on an inclined plane is
Q.50
An ideal flow of any fluid must fulfill the following
0 h : 0 m : 1 s