Fluid Mechanics for Chemical

The Stoke’s stream function applies to the________________? A. Irrotational flow only B. Ideal/non i viscous fluids onlyC. Cases of axial symmetry D. None of these

When a fluid flows over a solid surface, the___________________? A. Velocity is uniform at any cross-sectionB. Velocity gradient is zero at the solid surface C. Resistance between the surface & the fluid is lesser as compared to that between the fluid layers themselves D. Velocity is not zero at the solid surface

Interstage coolers are provided in a multistage compressor to____________________? A. Save power in compressing a given volume to a given pressure B. Cool the delivered air C. Achieve the exact delivery pressure D. None of these

The rate of change of moment of momentum represents the ______________ by the fluid? A. Torque applied B. Force exerted C. Work done D. Power developed

Boiler feed water pump is usually a ______________ pump? A. Reciprocating B. GearC. Multistage centrifugal D. Diaphragm

Boundary layer separation occurs when the____________________? A. Pressure reaches a minimumB. Cross-section of the channel is reduced C. Valve is closed in a pipeline D. Velocity of sound is reached

The ratio of inertial forces to gravity forces is called the ______________ number? A. MachB. Froude C. Euler D. Weber

Buoyant force__________________? A. For non-symmetrical bodies is not vertical B. Depends on the depth of the submergence of the floating bodyC. Depends on the weight of the floating body D. None of these

While starting a centrifugal pump, its delivery valve should be kept___________________? A. OpenedB. Closed C. Either opened or closed; it does not make any difference D. Either opened or closed; depending on the fluid viscosity

The Navier-Stokes equation deals with the law of conservation of___________________? A. Mass B. Energy C. Both A. & B.D. Momentum