The drag co-efficient for a bacterium moving in water at 1 mm/s, will be of the following order of magnitude (assume size of the bacterium to be 1 micron and kinematic viscosity of water to be 10⁻⁶m²/s). 0.44 24 24000 0.24 TRUE ANSWER : ? YOUR ANSWER : ?
Cavitation in a centrifugal pump results from High discharge pressure High discharge velocity Low barometric pressure High discharge rate TRUE ANSWER : ? YOUR ANSWER : ?
A lubricant 100 times more viscous than water would have a viscosity (in Pa.s) 0.01 1 0.1 10 TRUE ANSWER : ? YOUR ANSWER : ?
For an incompressible fluid, the bulk modulus of elasticity is ∞ N/m² 5 kg/m³ 0 N/m 1 N TRUE ANSWER : ? YOUR ANSWER : ?
Laminar flow is characterised by the nonexistence of Pressure fluctuation Deviating velocities All of these Eddies TRUE ANSWER : ? YOUR ANSWER : ?
__________ is an example of axial flow impeller. Propeller All of these Paddle Turbine TRUE ANSWER : ? YOUR ANSWER : ?
A centrifugal pump is used to pump water through a horizontal distance of 150 m, and then raised to an overhead tank 10 m above. The pipe is smooth with an I.D of 50 mm. What head (m of water) must the pump generate at its exit (E) to deliver water at a flow rate of 0.001 m³/s? The Fanning friction factor, f is 0.0062. 10 m 20 m 11 m 12 m TRUE ANSWER : ? YOUR ANSWER : ?
For the transfer of solution of thick slurry, the pump used is a __________ pump. Diaphragm Centrifugal Reciprocating Gear TRUE ANSWER : ? YOUR ANSWER : ?
The hydrodynamic and thermal boundary layers will merge, when Nusselt number tends to infinity Prandtl number is one Archimedes number is greater than 10000 Schmidt number tends to infinity TRUE ANSWER : ? YOUR ANSWER : ?
The equivalent diameter for pressure drop calculation for a duct of square cross-section is given by(where, x = each side of the square duct) x/2 x πx 2x TRUE ANSWER : ? YOUR ANSWER : ?