Aux 2 Unit 2 Quiz 1

Aux 2 Unit 2 Q1

1 / 8

Why is pressure regulation necessary in a hydraulic system with a fixed displacement pump?

B) To prevent the system from overheating

A) To increase the flow rate continuously

C) To maintain consistent pressure and protect the system from excessive pressure

D) To ensure constant torque

2 / 8

What is the primary purpose of an accumulator in a constant pressure hydraulic system?

C) To cool the hydraulic fluid

D) To decrease system pressure during operation

B) To store pressurized hydraulic fluid for use when demand exceeds pump capacity

A) To increase the temperature of the hydraulic fluid

3 / 8

How is the speed of a hydraulic hoist motor varied in a constant pressure system?

D) By changing the type of hydraulic fluid

A) By altering the pressure in the system

C) By using a variable flow control valve

B) By adjusting the swash plate angle

4 / 8

What method is used to vary the torque output of a hydraulic hoist motor in a constant pressure system?

B) By adjusting the swash plate angle in the motor

C) By varying the flow rate and pressure supplied to the motor

D) By modifying the hydraulic fluid composition

A) By changing the pump speed

5 / 8

What is an additional benefit of having an accumulator in a hydraulic system?

C) It filters the hydraulic fluid

B) It constantly increases the system pressure

D) It stabilizes temperature fluctuations in the system

A) It decreases the load on the pump by providing supplementary flow during high demand

6 / 8

Why might varying torque be necessary for operating a crane’s hoist motor?

D) To prevent the motor from stopping completely

B) To enable the motor to lift or lower loads of varying weights efficiently

A) To ensure the motor operates at a fixed speed

C) To reduce the wear on the hydraulic fluid

7 / 8

How is the direction of the hoist motor controlled in a hydraulic system?

A) By reversing the pump's rotation

D) By increasing the accumulator capacity

B) By using a directional control valve

C) By changing the fluid viscosity

8 / 8

How is the hydraulic pressure typically regulated in a constant pressure system with a fixed displacement pump?

D) By changing the fluid temperature

B) By using a pressure relief valve to divert excess flow

C) By adjusting the piston diameter in the pump

A) By varying the pump speed

Your score is