MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Waste Water Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which formula is used to calculate the head for centrifugal pumps? |
| A. | tH=P(PSIG)X144/Specific gravity |
| B. | tH=P(PSIG)X2.31/Specific gravity |
| C. | tH=P(ft)X144/Specific gravity |
| D. | tH=P(ft)X2.31/Specific gravity |
| Answer» C. tH=P(ft)X144/Specific gravity | |
| 2. |
Which type of pump is used when the ef uent should be pumped back into the plant for use as service water? |
| A. | tVortex Pump |
| B. | tVertical Turbine Pump |
| C. | tSump pump |
| D. | tRotary pump |
| Answer» C. tSump pump | |
| 3. |
Which type of impeller is usually preferred when handling liquids with solids? |
| A. | tClosed impeller |
| B. | tOpen impeller |
| C. | tSingle suction impeller |
| D. | tDouble suction impeller |
| Answer» C. tSingle suction impeller | |
| 4. |
In order to reduce the operation and maintenance which of the following characteristics of a pump should be considered? |
| A. | tEfficiency of the pump |
| B. | tFlow rate |
| C. | tNPSH |
| D. | tHead |
| Answer» B. tFlow rate | |
| 5. |
For a mechanical seal which is the normal leakage rate? |
| A. | t30-50 drops of seal water/min |
| B. | t40-60 drops of seal water/min |
| C. | t20-40 drops of seal water/min |
| D. | t20-60 drops of seal water/min |
| Answer» E. | |
| 6. |
Which is the part of the pump which prevents the flow of water from the volume to enter back to the impeller? |
| A. | tShaft |
| B. | tBearing |
| C. | tMechanical seal |
| D. | tWear rings |
| Answer» E. | |
| 7. |
Which type of pump is used when chemicals are to be dosed in water treatment plant? |
| A. | tPlunger Pump |
| B. | tPositive Displacement Pump |
| C. | tVertical Turbine Pump |
| D. | tJet Pump |
| Answer» C. tVertical Turbine Pump | |
| 8. |
Generally, what is the Material of Construction of the casing of the pumps which are used in a desalination plant? |
| A. | tCast Iron |
| B. | tBronze |
| C. | tStainless Steel SS 304 GRADE |
| D. | tStainless Steel SS 316 L Grade |
| Answer» E. | |
| 9. |
In a desalination plant in order to provide high pressure greater than the osmotic pressure which type of pump is selected? |
| A. | tReciprocating Pump |
| B. | tPositive Displacement Pump |
| C. | tBooster Pump |
| D. | tMultistage Pump |
| Answer» E. | |
| 10. |
The road way to the pumping station must be a _______ |
| A. | tHard surface |
| B. | tMuddy road |
| C. | tHilly road |
| D. | tSmoother path |
| Answer» B. tMuddy road | |
| 11. |
In duplex pump stations, the pumps shall be of __________ |
| A. | tSame pressure |
| B. | tSame efficiency |
| C. | tSame capacity |
| D. | tDifferent capacity |
| Answer» D. tDifferent capacity | |
| 12. |
What is a building where the pumps are located and operated called? |
| A. | tPumping station |
| B. | tPump house |
| C. | tPumping facility |
| D. | tPumping house |
| Answer» C. tPumping facility | |
| 13. |
What are the facilities including pumps and other equipment for pumping fluids from one place to another called? |
| A. | tPumping facilities |
| B. | tPumping stations |
| C. | tPumping house |
| D. | tPump and equipment facilities |
| Answer» C. tPumping house | |
| 14. |
To reduce the expenses, the pumps must have a high degree of ________ |
| A. | tFlow rate |
| B. | tEfficiency |
| C. | tPower |
| D. | tIntake |
| Answer» C. tPower | |
| 15. |
The most expensive part is the energy supply for pumps. |
| A. | tTrue |
| B. | tFalse |
| Answer» B. tFalse | |
| 16. |
Pumping stations are necessary where pressures have to be decreased. |
| A. | tTrue |
| B. | tFalse |
| Answer» C. | |