Mechanical Engineering Exam > Mechanical Engineering Questions > Consider the following pumps:1. Centrifugal p...
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Consider the following pumps:
1. Centrifugal pump, single-stage
2. Centrifugal pump, multi-stage
3. Reciprocating pump
4. Jet pump.
The pump (s) which can be used to lift water through a suction head of12 m from a well would include
1. Centrifugal pump, single-stage
2. Centrifugal pump, multi-stage
3. Reciprocating pump
4. Jet pump.
The pump (s) which can be used to lift water through a suction head of12 m from a well would include
- a)2 alone
- b)1, 3 and 4
- c)4 alone
- d)1 and 3
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Consider the following pumps:1. Centrifugal pump, single-stage2. Centr...
Ans. (c) Since suction head is 12 m, i.e. more than atmospheric pressure, only jet
pump can be used to lift water under such a situation.
pump can be used to lift water under such a situation.
This question is part of UPSC exam. View all Mechanical Engineering courses
Most Upvoted Answer
Consider the following pumps:1. Centrifugal pump, single-stage2. Centr...
Overview:
The given question asks us to identify the pump(s) that can lift water through a suction head of 12 m from a well. We need to analyze the characteristics of each pump and determine which one(s) are suitable for this application.
Explanation:
In order to lift water through a suction head of 12 m, we need a pump that can generate enough suction pressure to overcome the static head of the water column. Let's analyze each pump type and determine their suitability for this application.
1. Centrifugal pump, single-stage:
A single-stage centrifugal pump is not the best choice for lifting water from a 12 m suction head. It relies on the centrifugal force to generate pressure and is more suitable for low head applications. It may struggle to overcome the suction head and might not be able to lift water effectively.
2. Centrifugal pump, multi-stage:
A multi-stage centrifugal pump is designed to handle high head applications. It consists of multiple impellers stacked on a common shaft, allowing it to generate higher pressures. This type of pump is capable of overcoming a 12 m suction head and can effectively lift water from the well.
3. Reciprocating pump:
A reciprocating pump uses a piston or plunger to generate pressure. It is a positive displacement pump and can handle high head applications. With the ability to create high suction pressures, a reciprocating pump is suitable for lifting water from a 12 m suction head.
4. Jet pump:
A jet pump works by creating a high-velocity jet of fluid to create a pressure differential that lifts the water. It is not well-suited for high head applications and may struggle to overcome a 12 m suction head. Therefore, a jet pump is not suitable for this specific application.
Conclusion:
Based on the analysis, the pumps that can be used to lift water through a suction head of 12 m from a well are:
- Centrifugal pump, multi-stage
- Reciprocating pump
Therefore, the correct answer is option 'C' - 4 alone.
The given question asks us to identify the pump(s) that can lift water through a suction head of 12 m from a well. We need to analyze the characteristics of each pump and determine which one(s) are suitable for this application.
Explanation:
In order to lift water through a suction head of 12 m, we need a pump that can generate enough suction pressure to overcome the static head of the water column. Let's analyze each pump type and determine their suitability for this application.
1. Centrifugal pump, single-stage:
A single-stage centrifugal pump is not the best choice for lifting water from a 12 m suction head. It relies on the centrifugal force to generate pressure and is more suitable for low head applications. It may struggle to overcome the suction head and might not be able to lift water effectively.
2. Centrifugal pump, multi-stage:
A multi-stage centrifugal pump is designed to handle high head applications. It consists of multiple impellers stacked on a common shaft, allowing it to generate higher pressures. This type of pump is capable of overcoming a 12 m suction head and can effectively lift water from the well.
3. Reciprocating pump:
A reciprocating pump uses a piston or plunger to generate pressure. It is a positive displacement pump and can handle high head applications. With the ability to create high suction pressures, a reciprocating pump is suitable for lifting water from a 12 m suction head.
4. Jet pump:
A jet pump works by creating a high-velocity jet of fluid to create a pressure differential that lifts the water. It is not well-suited for high head applications and may struggle to overcome a 12 m suction head. Therefore, a jet pump is not suitable for this specific application.
Conclusion:
Based on the analysis, the pumps that can be used to lift water through a suction head of 12 m from a well are:
- Centrifugal pump, multi-stage
- Reciprocating pump
Therefore, the correct answer is option 'C' - 4 alone.
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Consider the following pumps:1. Centrifugal pump, single-stage2. Centrifugal pump, multi-stage3. Reciprocating pump4. Jet pump.The pump (s) which can be used to lift water through a suction head of12 m from a well would includea)2 aloneb)1, 3 and 4c)4 aloned)1 and 3Correct answer is option 'C'. Can you explain this answer?
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