Discussion
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- Question
The net positive suction head (NPSH) of a centrifugal pump is defined as the sum of the velocity head and the pressure head at the
Options- A. discharge.
- B. suction.
- C. suction minus vapor pressure of the liquid at suction temperature.
- D. discharge minus vapor pressure of the liquid at the discharge temperature.
- Correct Answer
- suction minus vapor pressure of the liquid at suction temperature.
- 1. For the transfer of solution of thick slurry, the pump used is a __________ pump.
Options- A. reciprocating
- B. gear
- C. diaphragm
- D. centrifugal Discuss
- 2. Molten soap mass is transported by a __________ pump.
Options- A. diaphragm
- B. reciprocating
- C. gear
- D. centrifugal Discuss
- 3. The maximum delivery pressure of compressors can be upto __________ atmospheres.
Options- A. 10
- B. 100
- C. 250
- D. 1000 Discuss
- 4. The normal stress is the same in all directions at a point in a fluid, when the fluid is
Options- A. non-viscous.
- B. incompressible.
- C. both (a) and (b).
- D. having no motion of one fluid layer relative to the other. Discuss
- 5. A particle A of diameter 10 microns settles in an oil of specific gravity 0.9 and viscosity 10 poise under Stoke's law. A particle B with diameter 20 microns settling in the same oil will have a settling velocity
Options- 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. Discuss
- 6. __________ pumps are axial flow pumps.
Options- A. Turbine
- B. Propeller
- C. Diffuser
- D. none of these Discuss
- 7. A Bingham fluid of viscosity ? = 10 Pa.s and yield stress, ?0 = 10 KPa, is shared between flat parallel plates separated by a distance of 10-3 m. The top plate is moving with a velocity of 1 m/s. The shear stress on the plate is
Options- A. 10 KPa
- B. 20 KPa
- C. 30 KPa
- D. 40 KPa Discuss
- 8. Nominal size of the discharge pipe of a pump is usually __________ the nominal size of the inlet pipe.
Options- A. smaller than
- B. larger than
- C. same as
- D. twice Discuss
- 9. The dimension of dynamic viscosity is
Options- A. ML-1T-1
- B. L2T-1
- C. LT-2
- D. ML-1T-2 Discuss
- 10. Which of the following denotes the effect of compressibility in fluid flow?
Options- A. Weber number
- B. Mach number
- C. Euler number
- D. Reynolds number Discuss
Fluid Mechanics problems
Search Results
Correct Answer: diaphragm
Correct Answer: centrifugal
Correct Answer: 1000
Correct Answer: having no motion of one fluid layer relative to the other.
Correct Answer: one fourth as that of A.
Correct Answer: Propeller
Correct Answer: 20 KPa
Correct Answer: smaller than
Correct Answer: ML-1T-1
Correct Answer: Mach number
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