Search
.Management Sciences
Category: Fluid Mechanics for Chemical
The uniformity of a gas fluidised bed depends upon the _______________ of the solid particles?
A. Size
B. Surface properties
C. Both A. and B.
D. Neither A. nor B.
Power number is the ratio of____________________?
A. Drag stress to inertial stress
B. Inertial stress to drag stress
C. Inertial stress to gravitational stress
D. Gravitational stress to drag stress
The time of oscillation of a floating body is _________________?
A. Longer, if Metacentric height is increased
B. Independent of the Metacentric height
C. Dependent on the buoyant forces only
D. None of these
Purpose of hydraulic accumulator is to_______________?
A. Ensure intermittent supply of hydraulic pressure
B. Increase the pressure and store/ accumulate it
C. Accumulate pressure to increase force
D. Generate high pressure to operate hydraulic machines like cranes, lifts, presses etc
The vent valve provided in a liquid handling centrifugal pump is___________________?
A. Generally a needle valve
B. Used to release any gases that might be vapour locking the pump
C. Helpful in easy removal of samples
D. All A., B. and C.
Rubber latex is an example of a ______________ fluid?
A. Pseudo plastic
B. Bingham plastic
C. Dilatent
D. Newtonian
In area meter (e.g., Rotameter), with increase in the fluid flow rate, the___________________?
A. Pressure drop increases linearly
B. Pressure drop is almost constant
C. Area through which fluid flows does not vary
D. None of these
Actual lift of a pump is always less than the theoretical lift and is limited by the__________________________?
A. Specific gravity & temperature of the liquid
B. Leakage & pressure decreasing at higher elevations
C. Frictional resistance through pipes, fittings & passages
D. All A., B. and C.
The equivalent diameter for pressure drop calculation for a fluid flowing through a rectangular cross-section channels having sides ‘x’ & ‘y’ is given by_________________?
A. 2xy/(x + y)
B. xy/(x + y)
C. (x + y)/2xy
D. (x + y)/xy
Pick out the wrong statement?
A. The eddy viscosity is a function of the type of turbulence involved
B. The eddy viscosity is a fluid property
C. The viscosity of gas increases with increase in temperature
D. The viscosity of a liquid increases with decrease in temperature
Recent Comments