Inno Quiz_CW45_Nov_2023

Hydraulic 4/2 DCVs are often used as 3/2 DCVs by______.

• Changing the spool

• Blocking a port

• Placing the spring on the other end

• Changing the operator

Hydraulic pilot-operated DCVS are used in applications requiring high_______.

• Efficiency

• Pressures

• Temperatures

• Flow rates

You're on a train that's moving forward at 50 mph. You throw a ball in the direction that the train is moving. Relative to you and the train, the ball leaves your hand travelling at 20 mph.

From the point of view of someone standing alongside the tracks, how fast is the ball moving?

• 100

• 50

• 75

• 70

Where can you look on your car to see a good example of a basic piston-driven hydraulic system?

• the power steering system

• the instrument panel

• the brake system

What is one of the best places to get up close and personal with large hydraulic machines?

• at the local mall

• at home

• at construction site

• at office

Which among the following are not the main selection criteria for selection of hydraulic pumps?

• Discharge

• Pressure

• Speed

• Weight

What is the main purpose of a pressure-compensated flow control valve?

• To quickly create pressure changes in the circuit

• To cause actuators to speed up or slow down

• To maintain a constant flow rate when the pressure changes

• To allow mulitiple actuators to operate simultaneously

The ________ cylinder construction is used for heavy-duty applications.

• Rollled body

• Tie-rod

• Aluminum

• Plastic

Pilot-operated relief valves have a third port that may be used to __________.

• Unload the pump

• Vent the relief

• Remotely operate the relief

• All of the above

Which one of the following is an example of a hydraulically-operated machine?

• wheelbarrow

• Laptop computer

• Bulldozer

• Bus closing and opening door