Fluid Mechanics The variable required to be known in correlations used for estimating the horse power of a centrifugal gas compressor and hence its cost are P. Inlet pressure Q. Compressor rpm R. Delivery pressure S. Volumetric flow rate at inlet. P, Q and R R and S P and R P, Rand S P, Q and R R and S P and R P, Rand S ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics As the velocity V and thus the Reynolds number of a flow past a sphere increases from very low value, the drag force for Re << 1 None of these Increases linearly with V Decreases as V² Decreases linearly with V None of these Increases linearly with V Decreases as V² Decreases linearly with V ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Consider a centrifugal pump having a specific impeller diameter, fixed impeller speed pumping a liquid of constant density at a particular discharge capacity. With decrease in the capacity of the pump, the __________ decreases. Head of the liquid pumped NPSH required BHP required by the pump All of these Head of the liquid pumped NPSH required BHP required by the pump All of these ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Uniform fluid flow occurs, when the derivative of the flow variables satisfy the following condition. ∂/∂t = constant ∂/∂t = constant ∂/∂s = 0 ∂/∂t = 0 ∂/∂t = constant ∂/∂t = constant ∂/∂s = 0 ∂/∂t = 0 ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Two fluids are flowing through two similar pipes of the same diameter. The Reynold's number is same. For the same flow rate if the viscosity of a fluid is reduced to half the value of the first fluid, the pressure drop will Remain unchanged Increase Data insufficient to predict relative pressure drop Decrease Remain unchanged Increase Data insufficient to predict relative pressure drop Decrease ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics The head loss in turbulent flow in a pipe varies Inversely as the square of diameter As velocity Inversely as the velocity As (velocity)² Inversely as the square of diameter As velocity Inversely as the velocity As (velocity)² ANSWER DOWNLOAD EXAMIANS APP
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