Unit 4

Question 1

Hydraulic pumps operated manually

Answer 1

Hands Pumps

Question 2

Characteristics of hydraulic fluids

Answer 2

Can operate in extreme pressure (4000 psi)
Can operate in extreme temperatures
Must remain viscous
Must have a high flash point

Question 3

Two types of hydraulic fluids

Answer 3

Mineral and Synthetic Based

Question 4

What holds all the hydraulic fluid not contained in lines and components?

Answer 4

Reservoir

Question 5

What controls the direction of fluid flow into an actuator or motor?

Answer 5

Selector Valves

Question 6

Name 2 devices that are used to transmit power through hydraulic fluid.

Answer 6

Actuator and Motor

Question 7

Actuators provide what kind of motion?

Answer 7

Linear

Question 8

Motors provide what kind of motion?

Answer 8

Rotational

Question 9

What stores fluid under pressure to absorb pressure surges and acts as a temporary, single-use, emergency pressure source?

Answer 9

Accumulator

Question 10

What displays system pressure in psi?

Answer 10

Pressure gauges