Eaton Hydraulics Chapter 15

Question 1

What ratings do hydraulic pumps have?

Answer 1

Maximum pressure and flow rate (GPM)

Question 2

What does pump displacement measure?

Answer 2

Cubic inches of fluid displaced/pumped per pump revolution

Question 3

Which broad category do most hydraulic pumps fall under?

Answer 3

Fixed displacement pumps

Question 4

What is the function for volumetric efficiency?

Answer 4

Actual output / Theoretical Output

Question 5

What type of failure can be the result of High Pressures at a gear pump outlet?

Answer 5

Unbalanced load on gears and bearings.

Question 6

What is the most common type of fixed displacement hydraulic pump?

Answer 6

Balanced Vane pumps

Question 7

Why do Intra-vane pumps have holes drilled through the rotor segments

Answer 7

They are used to equalize pressure on vanes

Question 8

What type of positive displacement pump have pistons parallel to one another?

Answer 8

Axial Piston Pump

Question 9

Which type of piston pumps have Cylinder blocks are in line with the drive shaft?

Answer 9

In-line piston pump

Question 10

Which type of piston pump are at an offset angle to the drive shaft

Answer 10

Bent Axis piston pump