Hydraulic pump

Question 1

A ______ is essential for running hydraulic power systems smoothly.

Answer 1

Hydraulic pump

Question 2

Hydraulic pump
is connected to either a _______ and _______ induction motor.

Answer 2

single-phase, three-phase

Question 3

The pump shaft and motor shaft are coupled using a ____ , ______ and _______.

Answer 3

gasket, nuts, and bolts.

Question 4

The pump generates ___________, not ________

Answer 4

Flow, pressure

Question 5

_________ results from resistance to fluid
flow.

Answer 5

Pressure

Question 6

________ creates a vacuum, increasing volume and pulling water from sources like lakes,
ponds, or rivers.

Answer 6

Positive Half Cycle

Question 7

Discharges water by reducing volume.

Answer 7

Negative Half Cycle

Question 8

The heart of hydraulic a hydraulic system

Answer 8

Pump

Question 9

The ______ does not generate pressure

Answer 9

Pump

Question 10

A pump is a hydraulic machine that is used to
import_____________ to water and or liquid in
the form of pressure energy or kinetic energy

Answer 10

Hydraulic energy

Question 11

The speed of a pump shaft depends on the ____________

Answer 11

motor
shaft speed

Question 12

Motor shaft speed is expressed as

Answer 12

N_s = 120f/P

Question 13

The amount (volume) of fluid that delivers per unit
time through the discharge pipe

Answer 13

Flow Rate

Question 14

Pump flow rate is expressed as

Answer 14

Qt = Vp x N

Question 15

An ________ converts electrical power to
mechanical power to drive or rotate the pump.

Answer 15

Induction motor

Question 16

An ___________ converts electrical power to
mechanical power to drive or rotate the pump.

Answer 16

induction motor

Question 17

The ________ is produced when the pump-motor is
rotating in a specified direction

Answer 17

Torque

Question 18

The torque that is generated at the ________ of the
motor pump

Answer 18

shaft

Question 19

Torque is expressed as

Answer 19

T = F x r

Question 20

The rate of receiving and delivering energy is
known as power (p) and mathematically, it is
expressed as,

Answer 20

p = 2πT x N

Question 21

__________ is used to pump when a certain volume of fluid is displaced
and transferred from one place to another place.

Answer 21

Hydraulic pump

Question 22

According Displacement

Answer 22

1. Positive displacement (hydrostatic) pump (PDP)
2. Non-positive (hydrodynamic or kinetic or dynamic pressure) pump (NPDP)

Question 23

Types of positive displacement pump

Answer 23

1. Reciprocating
2. Rotating

Question 24

Types of Reciprocating Pump
According to action of water on piston

Answer 24

1.single-acting pump
2. Double -acting pump

Question 26

Types of Reciprocating Pump Based on the number of cylinder uses

Answer 26

1. Single-cylinder pump 2. Double-cylinder pump 3. Triple-cylinder pump

Question 27

__________ develops flow by carrying fluid between the teeth of two meshed gears

Answer 27

gear pump

Question 28

__________ are considerably larger than gear teeth pumps, but there are only two or three ________ are used on each rotor.

Answer 28

lobe pumps, lobe

Question 29

consists of a circular rotor rotating inside of a larger circular cavity

Answer 29

Vane pump

Question 30

axial flow positive displacement unit.

Answer 30

Screw pump

Question 31

The two shafts namely the ________ shaft and _______ shaft are attached to form meshing within a close-fitting housing

Answer 31

Driving, driven

Question 32

a ______ the cylinder block and driveshaft are located on the same centerline

Answer 32

Piston pump

Question 33

The piston usually moves __________ direction to create the ________ at the inlet pipe

Answer 33

Backward, vacuum

Question 34

This type of pump is normally designed with a variable displacement capability. The maximum swash plate angle is limited to ______ by construction

Answer 34

17.5°

Question 35

This _________ is defined as the ratio of the actual flow rate (𝑄𝐴) to the theoretical flow rate (𝑄𝑇 ) of a pump

Answer 35

volumetric efficiency

Question 36

Volumetric efficiency of Gear Pump

Answer 36

80-90 percent

Question 37

Volumetric efficiency of Vane Pump

Answer 37

92 percent

Question 38

Volumetric efficiency of Piston Pump

Answer 38

90-98 percent

Question 39

___________ is defined as the ratio of actual pump power output to the input power of the shaft.

Answer 39

Mechanical efficiency

Question 40

The ___________ is also defined as the product of volumetric efficiency and mechanical efficiency

Answer 40

Overall efficiency