Foragearpump,
A. asoutputpressureincreases,overallefficiencydecreases
B. asoutputpressureincreases,overallefficiencyincreases
C. overallefficiencyisnotaffectedbyoutputpressure
D. noneoftheabove
Gearpumpscanbe
A. onlyfixeddisplacement
B. onlyvariabledisplacement
C. bothfixedandvariabledisplacement
D. noneoftheabove
Whatistherelationbetweenspeedandactualdisplacementforagearpump?
Actualdisplacementincreaseswithrotorspeeddown
B. Actualdisplacementdecreaseswithrotorspeedup
C. Actualdisplacementisconstantanddoesnotchangewithchangeinspeed
D. Noneoftheabove
Whatistheadvantageofexternalgearpumps?
A. highpressureofoutput
B. smoothandquiet
C. lowcostofproduction
D. Noneoftheabove