Chemical Engineering - Fluid Mechanics
Exercise :: Fluid Mechanics - Section 7
| 1. |
Cocks are used to control |
| A. |
water | | B. |
any liquid | | C. |
solids | | D. |
none of these |
Answer: Option B
Explanation:
|
| 2. |
If in a flow field, between any two points, then the flow must be |
| A. |
steady, incompressible, irrotational. | | B. |
steady, compressible, irrotational. | | C. |
steady, compressible and along a streamline. | | D. |
unsteady, incompressible, irrotational. |
Answer: Option A
Explanation:
|
| 3. |
The dimension of surface tension is |
Answer: Option B
Explanation:
|
| 4. |
Pick out the correct statement. |
| A. |
Fanning friction factor is inversely proportional to Reynolds number always. | | B. |
The property of a randomly packed bed (with raschig rings) is given by the ratio of the total volume to the volume of voids in the bed. | | C. |
Mach number in an incompressible fluid is always unity. | | D. |
Mach number is given by the ratio of the speed of the fluid to that of sound in the fluid under conditions of flow. |
Answer: Option D
Explanation:
|
| 5. |
The friction factor is |
| A. |
always inversely proportional to the Reynolds number. | | B. |
not dimensionless. | | C. |
not dependent on the roughness of the pipe. | | D. |
none of these. |
Answer: Option D
Explanation:
|
