Font size
WorksheetsPTT154 Quiz 6: Lecture 6
Total questions: 10
Worksheet time: 3mins
Which of the following is wrong about the cavitation of pumps?
The cause of the phenomena is the same as in the cavitation of the valve.
The decrease in fluid kinetic energy causes the formation of bubbles in the pumps.
The energy lost due to the conversion of energy to form bubbles resulting in a drop in pump efficiency.
THe bursting of the bubbles from the low to the high-pressure area will result in damage to the pump.
Which of the following is not a sign of cavitation in pumps?
The pump oscillates drastically during operation
The unpredictable power use
The gradual destruction of the impeller
Failure of bearing seal
Which of the following is the correct full name of NPSH?
Net Positive Suction Head
National School of Public Health
Netherlands School of Public Health
National Society of Professional Hypnotherapists
Which of the following is NOT the correct way to avoid cavitation in pumps?
Lower the fluid temperature
Increase the liquid level in the suction vessel
Reduce the diameter of the eye of the impeller
Use two lower capacity pumps in parallel
Which of the following is NOT used in the transportation of fluid?
Valve
Fans
Pumps
Compressors
Which of the following equipment should you use if you need to transport gas at a high-pressure drop?
Fans
Blowers
Compressors
Pumps
Which of the following is NOT true about fans?
Discharge large volume of liquid into open spaces
Low-speed machines that generate very low pressure
The density of the fluid does not change appreciably
The density of the fluid is usually assumed constant
Which of the following meme is NOT used in the earlier lecture?
Which of the following is NOT a centrifugal fan?
Which of the following is NOT a type of compressor?
Positive displacement compressors
Negative displacement compressors
Dynamic displacement compressors
Centrifugal compressors
