What option would a technician have to increase NPSH available when it is too low?
a. Decease the pressure above the liquid
b. Decrease the liquid level
c. Increase the pressure above the liquid
d. Increase the liquid temperature
a. Incorrect. If the NPSH available is too low, the technician has several options to increase it. One option would be to increase the pressure above the liquid. Another option would be to raise the liquid level. The technician can also reduce liquid temperature, which lowers the vapor pressure. Finally, the technician can reduce the flow rate, which lowers the pressure drop and decreases the NPSH required.
b. Incorrect. If the NPSH available is too low, the technician has several options to increase it. One option would be to increase the pressure above the liquid. Another option would be to raise the liquid level. The technician can also reduce liquid temperature, which lowers the vapor pressure. Finally, the technician can reduce the flow rate, which lowers the pressure drop and decreases the NPSH required.
c. Correct. If the NPSH available is too low, the technician has several options to increase it. One option would be to increase the pressure above the liquid. Another option would be to raise the liquid level. The technician can also reduce liquid
temperature, which lowers the vapor pressure. Finally, the technician can reduce the flow rate, which lowers the pressure drop and decreases the NPSH required.
d. Incorrect. If the NPSH available is too low, the technician has several options to increase it. One option would be to increase the pressure above the liquid. Another option would be to raise the liquid level. The technician can also reduce liquid temperature, which lowers the vapor pressure. Finally, the technician can reduce the flow rate, which lowers the pressure drop and decreases the NPSH required.
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