Discussion
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- Question
The dimension of dynamic viscosity is
Options- A. ML-1T-1
- B. L2T-1
- C. LT-2
- D. ML-1T-2
- Correct Answer
- ML-1T-1
- 1. 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
- 2. 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
- 3. __________ pumps are axial flow pumps.
Options- A. Turbine
- B. Propeller
- C. Diffuser
- D. none of these Discuss
- 4. 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. Discuss
- 5. For the transfer of solution of thick slurry, the pump used is a __________ pump.
Options- A. reciprocating
- B. gear
- C. diaphragm
- D. centrifugal Discuss
- 6. 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
- 7. Schedule number of a pipe, which is a measure of its wall thickness, is given by
Options- A. 1000 P'/S
- B. 100 P'/S
- C. 1000 S/P'
- D. 10000 P'/S Discuss
- 8. Which of the following is not a dimension-less parameter?
Options- A. Euler number
- B. Specific gravity
- C. Fanning friction factor
- D. None of these Discuss
- 9. Dimension of surface tension is(where, F = force, L = length)
Options- A. FL-1
- B. F-1 . L
- C. F.L-2
- D. F-2 . L Discuss
- 10. In fluid flow, cavitation is caused, if the
Options- A. fluid velocity decreases to zero.
- B. total energy decreases.
- C. both (a) and (b).
- D. flow pressure approaches its vapor pressure at the prevailing temperature. Discuss
Fluid Mechanics problems
Search Results
Correct Answer: smaller than
Correct Answer: 20 KPa
Correct Answer: Propeller
Correct Answer: suction minus vapor pressure of the liquid at suction temperature.
Correct Answer: diaphragm
Correct Answer: Mach number
Correct Answer: 1000 P'/S
Correct Answer: None of these
Correct Answer: FL-1
Correct Answer: flow pressure approaches its vapor pressure at the prevailing temperature.
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