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) ?
A. 24000
B. 24
C. 0.24
D. 0.44
A. 24000
B. 24
C. 0.24
D. 0.44
A. Same as that of A
B. One fourth as that of A
C. Twice as that of A
D. Four times as that of A
A. Increases
B. Decreases
C. Remain same
D. May increase or decrease; depends on the magnitude of shear rate
A. Increases
B. Decreases
C. Remains unchanged
D. Data insufficient to predict
A. 2v2/gc
B. v2/2gc
C. ρv2/gc
D. ρ.v2/2gc
A. Bursting of pipelines due to closure by a valve
B. Rapid pressure change due to a rapid change in the rate of flow
C. Pressure increase due to closure of a valve resulting in decrease in rate of flow
D. None of these
Water hammer in a pipeline results from the____________________? Read More »
Fluid Mechanics for Chemical A. Unsteady through unchanged cross-section
B. Steady through changing cross-section
C. Steady and the cross-section is unchanged
D. Unsteady and the cross-section is changed
A. 1
B. 10
C. 40
D. 70
A. Size
B. Surface properties
C. Both A. and B.
D. Neither A. nor B.
A. Steam
B. Diesel engine
C. Electric motor
D. Gas turbine