Discussion :: Hydraulic Machines - Section 1 (Q.No.35)
When the speed of the pump increases, its net positive suction head (NPSH) requirement decreases.
Answer: Option B
No answer description available for this question.
|Omar Al Nawaisheh said: (Jan 14, 2015)|
|Why when the speed of the pump increases, its net positive suction head (NPSH) requirement decreases? Disagree.|
|Aru said: (Feb 10, 2015)|
|What is the NPSH?|
|Pratik said: (Jul 4, 2015)|
|NPSH (Net Positive Suction Head).
The minimum pressure required at the suction port of the pump to keep the pump from cavitation.
|Pradip Nohwar said: (Jun 15, 2016)|
|Is it because NPSH remains constant?|
|Bhuppi said: (Dec 5, 2016)|
|The required NPSH increases monotonically while the NPSH actual decreases, and when these two meet, the cavitation starts.
NPSH(required) = (P + v * v/2)inlet - P(vapour)/density.
|Amr said: (Jun 28, 2017)|
|Yash Joshi said: (Jan 27, 2018)|
|Power is directly proportional to speed. So more power products by pump for suction of low pressure liquid, when you increase speed. So not requirement of more npsh.|
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