Question 382General Subjects - Assistant Engineer70% to pass
If the existing vapor pressure is subtracted from the indicated pressure at the pump suction, the remainder is the _______________.
AI Explanation
The correct answer is C) apparent net positive suction head.
When the existing vapor pressure is subtracted from the indicated pressure at the pump suction, the remainder is the apparent net positive suction head. This is the pressure available at the pump suction to prevent the liquid from vaporizing and causing cavitation. The apparent net positive suction head is a critical parameter in pump selection and operation, as it needs to be greater than the net positive suction head required by the pump to ensure proper and efficient operation.
The other options are incorrect because they represent different pump performance parameters: total suction head, pump head, and discharge head, which are not directly calculated by subtracting the vapor pressure from the indicated suction pressure.
Related Questions
#380 How does the viscosity of a fluid being pumped affect the operation of a spur gear pump? #381 Positive displacement, helical gear pumps are well suited for pumping oil because _______________.#383 Which of the following terms is used to identify the pressure of a liquid entering a centrifugal pump? #384 The pressure of a liquid leaving the pump can be referred to as the _______________.#385 If the existing vapor pressure is subtracted from the indicated pressure at the pump suction, the remainder is the _______________.