Hydraulics week 7 2.0

What type of pump is a pump and control system designed specifically for one application: Operating the hoist on a dump truck?

• Piston Pump

• External gear Pump

• Dump Pump

• Vane Pump

Hydraulic filters are generally categorized according to the:

• Material Used

• Mesh Size

• Maximum Working pressure

• Filter Size

The _____ valve provides a back pressure to hold a vertical load in place until certain pressure requirements are met.

• Unloading

• Pressure-Reducing

• Brake

• Counterbalance

Gas Charged accumulators are most commonly charged with ______ as the inert charge gas.

• Hydrogen

• Shop Air

• Oxygen

• Nitrogen

• Farts

If we know the hydraulic system working pressure and the area of the cylinder, what can we determine?

• The number of cylinders required

• The mechanical advantage

• The maximum weight the cylinder can lift

• The ammount of efficiency losses

What is NOT an advantage of petroleum-based hydraulic fluids?

• Low Cost

• Good Lubricity

• Fire-Resistant

• Low Toxicity

Which is the most common directional control valve mechanism for hydraulic applications?

• Spool Type

• Sliding Plate

• Rotating Plate

• Cartridge

• Injection

What pressure control Valve is used to control the order of operation of other actuators in the system?

• Unloading Valves

• Counterbalance Valves

• Sequencing Valves

• Numbering Valves

Which is NOT a function of a hydraulic accumulator?

• Providing fluid flow to supplement the pump output in order to increase actuator speed

• Recharging during low demand periods

• providing a pressure source to hold loads in place if the pump is hut down

• Limiting the maximum pressure that can occur in a portion or branch of the system

On a International Maxx Force engine... The Air Compressor is:

• Belt Driven

• Gear Driven on the front Accessory Drive

• Water cooled

• Air Cooled

• Attached to the Fuel Pump