The unit of kinematic viscosity is__________?
Pascal-second is the unit of__________?
An ideal fluid is__________?
If the dynamic viscosity of a fluid is 0.5 poise and specific gravity is 0.5, then the kinematic viscosity of that fluid in stokes is__________?
The viscosity of a gas__________?
Newton’s law of viscosity relates__________?
The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is__________?
A vertical rectangular plane surface is submerged in water such that its top and bottom surfaces are 1.5 m and 6.0 m res-pectively below the free surface. The position of center of pressure below the free surface will be at a distance of__________?
A floating body is said to be in a state of stable equilibrium__________?
If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will__________?
The increase in meta centric height__________?
The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as__________?
When a liquid rotates at a constant angular velocity about a vertical axis as a rigid body, the pressure intensity varies__________?
A right circular cylinder open at the top is filled with liquid and rotated about its vertical axis at such a speed that half the liquid spills out, then the pressure intensity at the center of bottom is__________?
Which of the following is an incorrect statement ?
A closed tank containing water is moving in a horizontal direction along a straight line at a constant speed. The tank also contains a steel ball and a bubble of air. If the tank is decelerated horizontally, then__________?
Select the incorrect statement?
Flow at constant rate through a tapering pipe is__________?
When the velocity distribution is uniform over the cross-section, the correction factor for momentum is__________?
Least possible value of correction factor for__________?
If velocity is zero over l/3rd of a cross-section and is uniform over remaining 2/3rd of the cross-section, then the correction factor for kinetic energy is__________?
Which of the following velocity potentials satisfies continuity equation ?
In a forced vortex motion, the velocity of flow is__________?
Equation of continuity is based on the principle of conservation of__________?
The pitot tube is used to measure__________?
The theoretical value of coefficient of contraction of a sharp edged orifice is__________?
Due to each end contraction, the discharge of rectangular sharp crested weir is reduced by__________?
The pressure at the summit of a syphon is__________?
Coefficient of velocity for Borda’s mouth piece running full is__________?
The major loss of energy in long pipes is due to__________?
Which of the following has highest coefficient of discharge ?
The discharge over a broad crested weir is maximum when the depth of flow is__________?
For a sphere of radius 15 cm moving with a uniform velocity of 2 m/sec through a liquid of specific gravity 0.9 and dynamic viscosity 0.8 poise, the Reynolds number will be__________?
If x is the distance from leading edge, then the boundary layer thickness in laminar flow varies as__________?
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__________?
In case of an airfoil, the separation of flow occurs__________?
The distance y from pipe boundary, at which the point velocity is equal to average velocity for turbulent flow, is__________?
With the same cross-sectional area and immersed in same turbulent flow, the largest total drag will be on__________?
For hydro-dynamically smooth boundary, the friction coefficient for turbulent flow is__________?
For laminar flow in a pipe of circular cross-section, the Darcy’s friction factor f is__________?
The ratio of average velocity to maximum velocity for steady laminar flow in circular pipes is__________?
The discharge of a liquid of kinematic viscosity 4 cm2/sec through a 8 cm dia-meter pipe is 3200n cm7sec. The type of flow expected is__________?
The velocity distribution for laminar flow through a circular tube__________?
The losses are more in__________?
The maximum thickness of boundary layer in a pipe of radius r is__________?
Two pipe systems are said to be equivalent when__________?
The speed of a pressure wave through a pipe depends upon__________?
Drag force is a function of__________?
For laminar flow in circular pipes, the Darcy’s friction factor f is equal to__________?
The horse power transmitted through a pipe is maximum when the ratio of loss of head due to friction and total head supplied is__________?
If the elevation of hydraulic grade line at the junction of three pipes is above the elevation of reservoirs B and C and below reservoir A, then the direction of flow will be__________?

Select the correct statement?

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

Correct Answer: The absolute roughness increases with time ✔

Last Updated: January 18, 2019