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Which one of the following statements is relevant to the specific speedof a centrifugal pump?
- a)Head developed is unity and discharge is unity
- b)Head developed is unity and power absorbed is unity
- c)Discharge is unity and power absorbed is unity
- d)Each of head developed, power absorbed and discharge is equal to unity
Correct answer is option 'A'. Can you explain this answer?
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The specific speed of a centrifugal pump is a dimensionless parameter that characterizes the performance of the pump. It is defined as the speed of a geometrically similar pump that would deliver unit head and unit discharge.
The specific speed of a centrifugal pump can be determined using the formula:
N_s = (N * Q^0.5) / H^0.75
where:
N_s is the specific speed
N is the rotational speed of the pump in revolutions per minute (RPM)
Q is the pump flow rate in cubic meters per second (m^3/s)
H is the pump head in meters (m)
From the given options, the statement "Head developed is unity and discharge is unity" is relevant to the specific speed of a centrifugal pump.
Explanation:
- Head developed is unity: In this context, "head developed" refers to the pressure or energy imparted to the fluid by the pump. When the head developed is unity, it means that the pump is generating a unit amount of pressure or energy. This is a relevant parameter for determining the specific speed because it indicates the pump's ability to transfer energy to the fluid.
- Discharge is unity: The term "discharge" refers to the flow rate of the pump, which is the volume of fluid being delivered per unit of time. When the discharge is unity, it means that the pump is delivering a unit amount of fluid. This is also a relevant parameter for determining the specific speed because it indicates the pump's capacity to move fluid.
When both the head developed and discharge are unity, it means that the pump is operating at its maximum efficiency point. This is the condition at which the pump is delivering the maximum amount of fluid with the minimum amount of energy input. Therefore, this statement is relevant to the specific speed of a centrifugal pump.
Other options mentioned in the question, such as "Head developed is unity and power absorbed is unity," "Discharge is unity and power absorbed is unity," and "Each of head developed, power absorbed, and discharge is equal to unity," are not specifically related to the concept of specific speed in centrifugal pumps. Therefore, they are not the correct answers.
The specific speed of a centrifugal pump can be determined using the formula:
N_s = (N * Q^0.5) / H^0.75
where:
N_s is the specific speed
N is the rotational speed of the pump in revolutions per minute (RPM)
Q is the pump flow rate in cubic meters per second (m^3/s)
H is the pump head in meters (m)
From the given options, the statement "Head developed is unity and discharge is unity" is relevant to the specific speed of a centrifugal pump.
Explanation:
- Head developed is unity: In this context, "head developed" refers to the pressure or energy imparted to the fluid by the pump. When the head developed is unity, it means that the pump is generating a unit amount of pressure or energy. This is a relevant parameter for determining the specific speed because it indicates the pump's ability to transfer energy to the fluid.
- Discharge is unity: The term "discharge" refers to the flow rate of the pump, which is the volume of fluid being delivered per unit of time. When the discharge is unity, it means that the pump is delivering a unit amount of fluid. This is also a relevant parameter for determining the specific speed because it indicates the pump's capacity to move fluid.
When both the head developed and discharge are unity, it means that the pump is operating at its maximum efficiency point. This is the condition at which the pump is delivering the maximum amount of fluid with the minimum amount of energy input. Therefore, this statement is relevant to the specific speed of a centrifugal pump.
Other options mentioned in the question, such as "Head developed is unity and power absorbed is unity," "Discharge is unity and power absorbed is unity," and "Each of head developed, power absorbed, and discharge is equal to unity," are not specifically related to the concept of specific speed in centrifugal pumps. Therefore, they are not the correct answers.
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Which one of the following statements is relevant to the specific speedof a centrifugal pump?a)Head developed is unity and discharge is unityb)Head developed is unity and power absorbed is unityc)Discharge is unity and power absorbed is unityd)Each of head developed, power absorbed and discharge is equal to unityCorrect answer is option 'A'. Can you explain this answer?
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Which one of the following statements is relevant to the specific speedof a centrifugal pump?a)Head developed is unity and discharge is unityb)Head developed is unity and power absorbed is unityc)Discharge is unity and power absorbed is unityd)Each of head developed, power absorbed and discharge is equal to unityCorrect 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 Which one of the following statements is relevant to the specific speedof a centrifugal pump?a)Head developed is unity and discharge is unityb)Head developed is unity and power absorbed is unityc)Discharge is unity and power absorbed is unityd)Each of head developed, power absorbed and discharge is equal to unityCorrect 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 Which one of the following statements is relevant to the specific speedof a centrifugal pump?a)Head developed is unity and discharge is unityb)Head developed is unity and power absorbed is unityc)Discharge is unity and power absorbed is unityd)Each of head developed, power absorbed and discharge is equal to unityCorrect answer is option 'A'. Can you explain this answer?.
Which one of the following statements is relevant to the specific speedof a centrifugal pump?a)Head developed is unity and discharge is unityb)Head developed is unity and power absorbed is unityc)Discharge is unity and power absorbed is unityd)Each of head developed, power absorbed and discharge is equal to unityCorrect 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 Which one of the following statements is relevant to the specific speedof a centrifugal pump?a)Head developed is unity and discharge is unityb)Head developed is unity and power absorbed is unityc)Discharge is unity and power absorbed is unityd)Each of head developed, power absorbed and discharge is equal to unityCorrect 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 Which one of the following statements is relevant to the specific speedof a centrifugal pump?a)Head developed is unity and discharge is unityb)Head developed is unity and power absorbed is unityc)Discharge is unity and power absorbed is unityd)Each of head developed, power absorbed and discharge is equal to unityCorrect answer is option 'A'. Can you explain this answer?.
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