Q. The peripherial velocity at inlet of a centrifugal pump having inlet diameter of 25 cms and rotating at 950 rpm is __________ m/sec.

View solution

Q. Laminar flow is characterised by the nonexistence of

View solution

Q. The length of the tube necessary for the boundary layer to reach the centre of the tube and for fully developed flow to be established is called the __________ length.

View solution

Q. Select the correct practical example of steady non-uniform flow.

View solution

Q. Hydraulic diameter for non-circular ducts is equal to __________ times the area of flow divided by the perimeter.

View solution

Q. Boundary layer thickness in laminar flow over a flat plate increases as (where, d = distance from the leading edge.)

View solution

Q. Gradually varied flow in open channel is a/an __________ flow.

View solution

Q. The line of action of the buoyant force acts through the

View solution

Q. Cavitation in a centrifugal pump can be avoided by keeping the

View solution

Q. Vane anemometer

View solution

Q. Terminal velocity is

View solution

Q. Consider two pipes of same length and diameter through which water is passed at the same velocity. The friction factor for rough pipe is f₁ and that for smooth pipe is f₂. Pick out the correct statement.

View solution

Q. For an incompressible fluid, the bulk modulus of elasticity is

View solution

Q. A fluid is a substance, that

View solution

Q. The pressure intensity is the same in all directions at a point in a fluid

View solution

Q. Quicksand is an example of a __________ fluid.

View solution

Q. Correction for capillary effect in manometers (used for pressure measurement) need not be applied, if diameter of the manometer tube is __________ mm.

View solution

Q. Differential manometer measures the

View solution

Q. The pressure and power requirement of a gas fan at constant speed & capacity varies __________ the gas density.

View solution

Q. Isothermal turbulent flow of a fluid results in decrease of its pressure, which depends on the

View solution