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When two identical centrifugal pumps are operating in series on a common rising main then
- a)the pressure in the rising main will be nearly doubled, while discharge will remains same
- b)the discharge will be nearly doubled, while the pressure remains the same
- c)discharge as well as the pressure in the rising main will be doubled
- d)discharge as well as the pressure in the rising main will increase but not become double
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
When two identical centrifugal pumps are operating in series on a comm...
When two pumps operate in series, discharge remains same and head produced is doubled and if they operate in parallel, discharge is doubled and head remains the same.
Most Upvoted Answer
When two identical centrifugal pumps are operating in series on a comm...
Explanation:
When two identical centrifugal pumps are operating in series on a common rising main, the pressure in the rising main will be nearly doubled, while the discharge remains the same. This can be understood by analyzing the characteristics of centrifugal pumps and the behavior of pumps in series.
Characteristics of Centrifugal Pumps:
- Centrifugal pumps convert mechanical energy into fluid kinetic energy and then into potential energy (pressure).
- The pressure rise in a centrifugal pump is primarily due to the centrifugal force acting on the fluid.
- The discharge of a centrifugal pump is determined by the impeller design, rotational speed, and the pump's capacity to transfer energy to the fluid.
Pumps in Series:
When centrifugal pumps are connected in series, their outlet of the first pump is connected to the inlet of the second pump. The combined system behaves as a single pump with an increased head (pressure) capability.
Explanation of the Given Answer:
- When two identical centrifugal pumps are operating in series, the pressure in the rising main will be nearly doubled.
- This is because each pump adds its own pressure rise to the system, resulting in an overall increase in pressure.
- The pressure rise of each pump is approximately equal, assuming identical pumps, so the total pressure rise will be nearly double compared to a single pump operating alone.
- However, the discharge remains the same because the second pump does not add any additional flow to the system.
- The flow rate through the pumps is determined by the system demand and the pump's capacity, which remains constant for identical pumps.
Conclusion:
When two identical centrifugal pumps are operating in series, the pressure in the rising main will be nearly doubled, while the discharge remains the same. This is due to the additive nature of pressure rise in pumps operating in series.
When two identical centrifugal pumps are operating in series on a common rising main, the pressure in the rising main will be nearly doubled, while the discharge remains the same. This can be understood by analyzing the characteristics of centrifugal pumps and the behavior of pumps in series.
Characteristics of Centrifugal Pumps:
- Centrifugal pumps convert mechanical energy into fluid kinetic energy and then into potential energy (pressure).
- The pressure rise in a centrifugal pump is primarily due to the centrifugal force acting on the fluid.
- The discharge of a centrifugal pump is determined by the impeller design, rotational speed, and the pump's capacity to transfer energy to the fluid.
Pumps in Series:
When centrifugal pumps are connected in series, their outlet of the first pump is connected to the inlet of the second pump. The combined system behaves as a single pump with an increased head (pressure) capability.
Explanation of the Given Answer:
- When two identical centrifugal pumps are operating in series, the pressure in the rising main will be nearly doubled.
- This is because each pump adds its own pressure rise to the system, resulting in an overall increase in pressure.
- The pressure rise of each pump is approximately equal, assuming identical pumps, so the total pressure rise will be nearly double compared to a single pump operating alone.
- However, the discharge remains the same because the second pump does not add any additional flow to the system.
- The flow rate through the pumps is determined by the system demand and the pump's capacity, which remains constant for identical pumps.
Conclusion:
When two identical centrifugal pumps are operating in series, the pressure in the rising main will be nearly doubled, while the discharge remains the same. This is due to the additive nature of pressure rise in pumps operating in series.
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When two identical centrifugal pumps are operating in series on a common rising main thena)the pressure in the rising main will be nearly doubled, while discharge will remains sameb)the discharge will be nearly doubled, while the pressure remains the samec)discharge as well as the pressure in the rising main will be doubledd)discharge as well as the pressure in the rising main will increase but not become doubleCorrect answer is option 'A'. Can you explain this answer?
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When two identical centrifugal pumps are operating in series on a common rising main thena)the pressure in the rising main will be nearly doubled, while discharge will remains sameb)the discharge will be nearly doubled, while the pressure remains the samec)discharge as well as the pressure in the rising main will be doubledd)discharge as well as the pressure in the rising main will increase but not become doubleCorrect answer is option 'A'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about When two identical centrifugal pumps are operating in series on a common rising main thena)the pressure in the rising main will be nearly doubled, while discharge will remains sameb)the discharge will be nearly doubled, while the pressure remains the samec)discharge as well as the pressure in the rising main will be doubledd)discharge as well as the pressure in the rising main will increase but not become doubleCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When two identical centrifugal pumps are operating in series on a common rising main thena)the pressure in the rising main will be nearly doubled, while discharge will remains sameb)the discharge will be nearly doubled, while the pressure remains the samec)discharge as well as the pressure in the rising main will be doubledd)discharge as well as the pressure in the rising main will increase but not become doubleCorrect answer is option 'A'. Can you explain this answer?.
When two identical centrifugal pumps are operating in series on a common rising main thena)the pressure in the rising main will be nearly doubled, while discharge will remains sameb)the discharge will be nearly doubled, while the pressure remains the samec)discharge as well as the pressure in the rising main will be doubledd)discharge as well as the pressure in the rising main will increase but not become doubleCorrect answer is option 'A'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about When two identical centrifugal pumps are operating in series on a common rising main thena)the pressure in the rising main will be nearly doubled, while discharge will remains sameb)the discharge will be nearly doubled, while the pressure remains the samec)discharge as well as the pressure in the rising main will be doubledd)discharge as well as the pressure in the rising main will increase but not become doubleCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When two identical centrifugal pumps are operating in series on a common rising main thena)the pressure in the rising main will be nearly doubled, while discharge will remains sameb)the discharge will be nearly doubled, while the pressure remains the samec)discharge as well as the pressure in the rising main will be doubledd)discharge as well as the pressure in the rising main will increase but not become doubleCorrect answer is option 'A'. Can you explain this answer?.
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